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Ken-ichi Sato

Professor Emeritus at Nagoya University and Invited Senior Researcher at AIST. Research on photonic network technologies, network architectures, traffic engineering, and network control and operations.

PROFILE

Profile

Ken-ichi Sato
Position
Professor Emeritus
Affiliations
National Institute of Advanced Industrial Science and Technology (AIST)
Tokai National Higher Education and Research System, Nagoya University (Professor Emeritus)
Research interests
Photonic network technologies, network design, traffic engineering, network control and operations, network performance evaluation, and intra- and inter-datacenter networks
Distinctions
Fellow of the IEEE; Honorary Member and Fellow of the IEICE; Doctor of Engineering
E-mail

BIOGRAPHY

Biography

Ken-ichi Sato received his B.S., M.S., and Ph.D. degrees in electronics engineering from the University of Tokyo, in 1976, 1978, and 1986, respectively. He is a Professor Emeritus at the Graduate School of Engineering, Nagoya University, an NTT R&D Fellow, and currently with Advanced Industrial Science and Technology (AIST). Before joining the Nagoya University in April 2004, he was an Executive Manager of the Photonic Transport Network Laboratory at NTT. He has been a leading researcher in the field of telecommunications; his most significant achievements lie in two of the important transport network technology developments. One is ATM (Asynchronous Transfer Mode) network technology, which includes the invention of the Virtual Path concept. The other is photonic network technology, which includes the invention of the optical path concept and various networking and system technologies. His R&D activities cover transport network architectures, network design, photonic network systems including optical cross-connect/ADM and photonic IP routers, and optical transmission technologies. He has authored/co-authored more than 550 research publications in international journals and conferences. He holds 50 granted patents and more than 100 pending patents. His contributions to asynchronous transfer mode (ATM) and optical network technology development extend to coediting the IEEE Journal on Selected Areas in Communications (four special issues) and the Journal of Lightwave Technology (three special issues); organizing several workshops and conference technical sessions; serving on numerous committees of international conferences including OFC 2016 General Chair and OFC 2014 Program Chair; authoring a book, Advances in Transport Network Technologies (Artech House, 1996); and coauthoring 17 other books. Prof. Sato is a honorary fellow of the Institute of Electronics, Information and Communication Engineers (IEICE) of Japan and a Fellow of the IEEE. He served as the president of the IEICE during 2016-2017. He received the Young Engineer Award in 1984, the Excellent Paper Award in 1991 and 2020, the Achievement Award in 2000, and the Distinguished Achievement and Contributions Award in 2011 from the IEICE of Japan, and the Best Paper Awards in 2007 and 2008 from the IEICE Communications Society. He was also the recipient of the Distinguished Achievement Award of the Ministry of Education, Science and Culture in 2002, and the Medal of Honor with Purple Ribbon from Japan’s Cabinet Office in 2014.

RESEARCH HISTORY

Research history

1978–1985
NTT, Research Engineer, Optical Communications LaboratoriesResponsible for the R&D of optical fiber transmission technologies for CATV distribution systems and analog video transmission systems, using baseband and subcarrier modulation of laser diodes.
1985–1992
NTT, Supervisor, Transport Processing LaboratoryResearch leader in the Transport Processing Laboratory working on B-ISDN based on ATM technology. Responsible for R&D on ATM networking technologies including transport network architecture development, network resource management (ATM network performance analysis, ATM traffic control and ATM network QoS design), OA&M, network restoration (self-healing), ATM cross-connect systems, and standardization.
1992–1999
NTT, Group Leader, Optical Network Systems LaboratoriesLeader of the Photonic Transport Network Systems Group working on photonic transport network architectures, network design, OA&M (operation, administration and maintenance) systems, and photonic network hardware systems including optical cross-connect systems, optical add/drop multiplexers, dense WDM transmission systems and related optical technologies.
1999–2004
NTT, Executive Director, Photonic Transport Network LaboratoryResponsible for the R&D of photonic transport networks including multi-protocol/layer network design, GMPLS (Generalized Multi-Protocol Label Switching) technologies and the photonic MPLS router, and cutting-edge photonic technologies such as supercontinuum optical sources and photonic crystal fibers. Also directed, jointly with business units, the introduction of optical cross-connect systems and reconfigurable optical add/drop multiplexers.
2004–2020
Nagoya University, Professor, Department of Electrical Engineering and Computer Science, Graduate School of EngineeringResearch on photonic network technologies, network design, traffic engineering, network control and operations, network performance evaluation, and intra- and inter-datacenter networks.
2020–present
Professor Emeritus, Nagoya University; Invited Senior Researcher, National Institute of Advanced Industrial Science and Technology (AIST)Research on photonic network technologies, network design, traffic engineering, network control and operations, network performance evaluation, and intra- and inter-datacenter networks.

ACTIVITIES

Professional activities

Editorial boards16

2010s3
  • 2016,a co-guest editor of the IEEE Journal of Lightwave technology, Special Issue on the Optical Fiber Communication Conference (OFC) 2016, vol. 35, No. 3, February 2017 (Edited by K. H. Tse, X. Liu, M. Birk, D. J. Richardson, K. -i. Sato, and C. R. Doerr).
  • 2015, a co-guest editor of the IEEE Journal of Lightwave technology, OFC/NFOEC 2014 Special Issue, vol. 33, No. 3, February 2015 (Edited by Yun Chung, Chris Doerr, Ed Murphy, Vishnu Shukura, Ken-ichi Sato, and Kathy Tse).
  • 2010-2012, a co-guest editor of the special issue of the IEEE J-SAC on "Next-Generation Spectrum-Efficient Optical Transport Networks ", vol. 31, No. 1, January 2013 (Edited by Gangxiang Shen, William Shieh, Chunming Qiao, Ken-ichi Sato, Jennifer Yates, and Eric Wong).
2000s8
  • 2009, Guest associate editor, Special Section on Advanced Information and Communication Technologies and Services in Conjunction with Main Topics of APCC/COIN 2008, IEICE Transactions on Communications, vol. E92-B, No. 10, October 2009.
  • 2009-present, An Associate Editor of the IEEE and OSA Journal of Optical Communications and Networking (JOCN).
  • 2006, Guest editor, Special Section on the Future Topics on Latest Trends in Optical Networks, IEICE Transactions on Communications, vol. E90-B, No. 8, August 2007.
  • 2004.2–2009, An Associate Co-editor of the IEEE J-SAC, OCN (Optical Communications and Networking Series).
  • 2004, Guest editor-in-chief, Special Section on the Next Generation Photonic Network Technologies, IEICE Transactions on Communications, vol. E88-B, No. 10, October 2005.
  • 2003-2006, a member of Editorial Committee of the IEICE Electronics Express.
  • 2000, a co-guest editor of the special issue of the IEEE JLT on " Optical Transport Networks", vol. 18, No. 12, 2000 (Edited by G. K. Chang, K. Sato and D. Hunter)
  • 2000, a member of Editorial Committee of the special issue of the IEICE, on “Advanced Internetworking based on Photonic Network Technologies,” vol. E83-B, No. 10, October 2000.
1990s4
  • 1999-2003, a member of the Editorial Board of the Optical Networks Magazine, published by SPIE (The International Society of Optical Engineering).
  • 1998, a co-guest editor of the special issue of the IEEE J-SAC on "High-Capacity Optical Transport Networks", vol. 16, No. 7, September 1998 (Edited by Adel Saleh, Alan Hill and K. Sato)
  • 1994, a guest co-editor of the special issue of the IEEE J-SAC on "Integrity of Public Telecommunication Networks", vol. 12, No. 1, January 1994 (Edited by T-H. Wu, J. C. McDonald, T. P. Flanagan, and K. Sato)
  • 1990, a guest co-editor of the special issue of the IEEE J-SAC on "Applications of RF and Microwave Subcarriers to Optical Fiber Transmission", vol. 8, No. 7, September 1990 (Edited by W. I. Way, R. Olshansky and K. Sato)
1980s1
  • 1988 - 1998, a member of the editorial advisory board of the International Journal of Communication Systems, published by Wiley

Conference organization106

20201
  • 2020, Broadband Access Communication Technologies XIV (OE131), SPIE Photonics West OPTO 2020, Member of the Program Committee, February 1-6, 2020, San Francisco.
20192
  • 2019, Broadband Access Communication Technologies XIII (OE131), SPIE Photonics West OPTO 2019, Member of the Program Committee, February 2-7, 2019, San Francisco.
  • 2019, Member of Technical Advisory Panel for 24th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2019(OECC/PSC2019), Fukuoka, July 7-11, 2019.
20181
  • 2018, Broadband Access Communication Technologies XII (OE131), SPIE Photonics West OPTO 2018, Member of the Program Committee, 27 January-1 February 2018, San Francisco.
20172
  • 2017, Broadband Access Communication Technologies XI (OE131), SPIE Photonics West OPTO 2016, Member of the Program Committee, 28 January-2 February 2017, San Francisco.
  • 2017, Steering Committee of 13rd International Conference on Design of Reliable Communication Networks, DRCN, 2017, Munic, March 8-10, 2017.
20164
  • 2016, Broadband Access Communication Technologies X (OE131), SPIE Photonics West OPTO 2016, Member of the Program Committee, 13-18 February 2016, San Francisco.
  • 2016, Steering Committee and Publicity Co-Chair of 12th International Conference on Design of Reliable Communication Networks, DRCN, 2016, Paris, March 15-17, 2016.
  • 2016, OFC 2016, General Chair, Anaheim, March 20-24, 2016.
  • 2016, Member of the Technical Program Committee, 6th Workshop on Green Optical Communications (GOC), 18th International Conferences on Transparent Optical Networks (ICTON) 2016, July 10-14, 2016, Trento, Italy.
20153
  • 2015, Broadband Access Communication Technologies IV, SPIE Photonics West OPTO OE131, Member of the Program Committee , 7-12 February 2015, San Francisco.
  • 2015, Technical Program Committee Co-Chair, Datacenter Network Workshop, 17th International Conferences on Transparent Optical Networks (ICTON) 2015, July 5-9, 2015, Budapest, Hungary.
  • 2015, Steering Committee and Publicity Co-Chair of 11th International Conference on Design of Reliable Communication Networks, DRCN, 2015, Kansas City, March 25-25, 2015.
20145
  • 2014, OFC/NFOEC 2014, Technical Program Co-Chair, San Francisco, March 9-13, 2014.
  • 2014 the OptoElectronics and Communications Conference (OECC), Steering Committee Member, Melborn, July 6-10, 2014.
  • 2014, Steering Committee Member, 10th International Conference on Design of Reliable Communication Networks, DRCN, 2014, Ghent, 31 March - 3 April 2014.
  • 2014, Broadband Access Communication Technologies VIII, OE128, SPIE International Symposium, SPIE OPTO 2014 (SPIE Photonics West), 1-6 February 2014, San Francisco, Member of the Program Committee.
  • 2014, Member of the Technical Program Committee, The 18th International Conference on Optical Network Design and Modeling (ONDM 2014), Stockholm, Sweden, May 19-22, 2014.
20132
  • 2013, Broadband Access Communication Technologies VII, OE127, SPIE International Symposium, SPIE OPTO 2013 (SPIE Photonics West), 2-7February 2013, San Francisco, Member of the Program Committee.
  • 2013, ECOC 2013, Member of the Technical Program Committee, Subcommittee 5; Optical Transport and Large Scale Data Networks, London, September 22-26, 2013.
20124
  • 2012, Broadband Access Communication Technologies VI, OE128, SPIE OPTO 2012 (SPIE Photonic West), 21-26January 2012, San Francisco, Member of the Program Committee.
  • 2012, OFC/NFOEC 2012, Technical Program Committee, Subcommittee Chair, Category 12 Core Networks, Los Angeles, March 4-8, 2012.
  • 2012, ECOC 2012, Member of the Technical Program Committee, Subcommittee 5; Backbone and Core Networks, Amsterdam, The Netherlands, September 16-20, 2012.
  • 2012, ACP2012 (Asia Communications and Photonics Conference and Exhibition), Member of the Technical Program committee, Subcommittee 4; Network Architectures, Management, and Applications, Guangzhou, China, November 7 - 10, 2012.
20116
  • 2011, Broadband Access Communication Technologies V, SPIE OPTO 2011 (SPIE Photonic West), 22-27 January 2011, San Francisco, Member of the Program Committee.
  • 2011, Workshop on Green Optical Communications (GOC) at the 13th International Conference on Transparent Optical Networks (ICTON 2011), Member of the technical committee, June 26-30, 2011, Stockholm.
  • 2011, Pacific Rim CLEO meeting, Member of the Optical Communications and Networking sub-committee, 29 August - 1 September 2011, Sydney, Australia.
  • 2011, ECOC 2011, Member of the Technical Program Committee, Subcommittee 5; Backbone and Core Networks, Geneva, Switzerland, September 18-22, 2011.
  • 2011, ACP2011 (Asia Communications and Photonics Conference and Exhibition), Member of the Technical Program committee, Subcommittee 4; Network Architectures, Management, and Applications, Shanghai, China, November 14 - 16, 2011.
  • 2011, ACP2011 (Asia Communications and Photonics Conference and Exhibition), Member of the Technical Progaram committee, Subcommittee 4; Network Architectures, Management, and Applications, Shanghai, China, November 14 - 16, 2011.
20105
  • 2010, Broadband Access Communication Technologies IV, Part of the SPIE Photonics West, Member of the Program Committee, January 23-28, 2010, San Francisco, USA.
  • 2010, ONDM 2010 (Optical Network Design and Modeling 2010), International Collaboration Co-chairs, Japan, 2010.
  • 2010, ECOC 2010, Member of the Technical Program Committee, Subcommittee 5; Backbone and Core Networks, Torino, Italy, September 19-23, 2010.
  • 2010, ECOC 2010, Symposium co-organizer, S3 Optical Networking for Future Broadband Internet Services, September 22, 2010, Torino, Italy.
  • 2010, ICC 2010, Optical Networks and Systems Symposium, Member of the technical program committee, 23-27 May, 2010, Cape Town, South Africa.
20097
  • 2009, Photonics West 2009, Broadband Access Communication Technologies III (OE126), Member of the Technical Program Committee, January 24-29, 2009, San Jose, USA.
  • 2009, CLEO/PR 2009 (The 8th Pacific Rim Conference on Laser and Electro-Optics), Co-chair of the Technical Program Subcommittee; Optical Communications and Networking, Aug. 30 - Sep. 3, 2009, Shanghai.
  • 2009, ICC 2009, Optical Networks and Systems Symposium, Member of the technical program committee, 14-18 June, 2009, Dresden, Germany.
  • 2009, ECOC 2009, Member of the Technical Program Committee, Subcommittee 5; Backbone and Core Networks, Vienna, Austria, September 20-24, 2009.
  • 2009, COIN 2009, The 8th International Conference on the Optical Internet, Technical Program Committee Co-Chair, Chengdu, China, November 14-16, 2009.
  • 2009, ACP2009 (Asia Communications and Photonics Conference and Exhibition), Member of the International Advisory Committee, and Co-chair of Subcommittee 4; Network Architectures, Management, and Applications, Shanghai, China, November 2 - 6, 2009.
  • 2009-present, DRCN (Design of Reliable Communication Networks) Steering Committee Member
20086
  • 2008, ICNS 2008, The Fourth International Conference on Networking and Services, Member of the International Program Committee, March 16-21, 2008, Gosier, Guadeloupe.
  • 2008, ICC'08 Optical Networks and Systems Symposium, Member of the technical program committee, 19-23 May, 2008, Beijing China.
  • 2008, COIN 2008, Technical Program Committee Chair, Akihabara, Tokyo, November 14-16, 2008.
  • 2008, APOC 2008 (Asia-Pacific Optical Communications Conference), Member of the International Advisory Committee, and Co-chair of Subcommittee 4; Network Architectures, Management, and Applications, Hangzhou, China, November 26 - 30, 2008.
  • 2008, ECOC 2008, Member of the Technical Program Committee, Subcommittee 5; Backbone and Core Networks, Brussels, September 21-25, 2008.
  • 2008, Photonics in Switching, Member of the Technical Program Committee, Sapporo, Japan, August 4-7, 2008.
20076
  • 2007, CLEO/Pacific Rim 2007, Co-Chair of Technical Sub-committee, Optical Communications, Networks, and Interconnects, August 26-31, 2007, Korea.
  • 2007, Optics East, Optical Transmission Systems and Equipment for WDM Networking VI (IT402), Co-chair, September 9-12 2007, Boston, USA.
  • 2007, Photonics in Switching, Member of the Technical Program Committee, August 19-22 2007, San Francisco, USA.
  • 2007, International Workshop on GRID over Optical Burst Switching Networks, GOBS 2007, Member of the Technical Program Committee, Athens, Greece, June 19-25, 2007.
  • 2007, ECOC 2007, Member of the Technical Program Committee, Subcommittee 5; Backbone and Core Networks, Berlin, September 16-20, 2007.
  • 2007, APOC 2007 (Asia-Pacific Optical Communications Conference), Member of the Technical Program Committee, Subcommittee 3; Optical Transmissions, Switching and Sub-Systems, Wuhan, China, November 5 - 9, 2007.
20066
  • 2006, APOC 2006 (Asia-Pacific Optical Communications Conference), Co-chair of Sub-committee 4, Seoul, Korea, Sept. 3 - 7, 2006.
  • 2006, COIN-NGNCON 2006 (The Joint International Conference on Optical Internet and Next Generation Network), Technical Committee Co-Chair, 2-6 June 2006, Jeju, Korea.
  • 2006, Optics East, Optical Transmission Systems and Equipment for WDM Networking V (IT302), Co-chair, October 1-4 2006, Boston, USA.
  • 2006, Optics East, Broadband Access Communication Technologies (IT305), Member of the Technical Program Committee, October 1-4 2006, Boston, USA.
  • 2006, ECOC 2006, Member of the International Advisory Committee and Technical Program Committee, Subcommittee 4; Backbone and Metro Core Networks, Cannes, September 24-28, 2006.
  • 2006, LEOS Annual Meeting, Member of the Technical Program Committee, ONS (Optical Networks and Systems) Subcommittee, October 29-November 2, 2006, Montreal, Canada.
20056
  • 2005, COIN 2005 (The Fourth International Conference on Optical Internet), Member of the International Organizing Committee, 29 May - 2 June 2005, Chongqing, China.
  • 2005, OECC 2005, Member of the Program Committee, and co-chair of the Technical Program Committee Sub-committee 1 (Optical Networks and Applications), Seoul July 5-8, 2005.
  • 2005, APOC 2005 (Asia-Pacific Optical Communications Conference) International Advisory Committee Member and Co-chair of Sub-committee 4, Shanghai, China, Nov. 7 - 10, 2005.
  • 2005, Conference Co-Chair, Optics East, Optical Transmission Systems and Equipment for WDM Networking IV (IT202), October 23-26, 2005, Boston, (Conference Chair; Ken-ichi Sato, Werner Weiershausen, Achyut K. Dutta, and Benjamin B. Dingle).
  • 2005, ECOC 2005 Advisory Board Member and Member of the Technical Program Committee, Subcommittee 5; Networks and Network Applications, Birmingham, September 25-28, 2005.
  • 2005, LEOS Annual Meeting, Member of the Technical Program Committee, ONS(Optical Networks and Systems) Subcommittee, October 23-27, 2005, Sydney.
20046
  • 2004, Vice-General Chair, OECC/COIN 2004, Yokohama, Japan, July 12-16, 2004.
  • 2004, Member of the Program Committee of the 17th IEEE LEOS Annual Meeting, Puerto Rico, November 7-11, 2004.
  • 2004, Organizing Committee Member of SPIE's ITCom 2004, and Conference Co-Chair, Optical Transmission Systems and Equipment for WDM Networking III (IT202), 25-28 October, 2004, Philadelphia, Pennsylvania.
  • 2004, ECOC 2004, Member of the Technical Program Committee, Subcommittee 5; Networks and Network Applications, Stockholm, September 5-9, 2004.
  • 2004, Member of the International Advisory Committee of APOC 2004 (Asia-Pacific Optical Communications Conference), Beijing, China, Nov. 7 - 11, 2004.
  • 2004, OECC/COIN 2004, Session 14B1, Session Chair, Yokohama, Japan, July 12-16, 2004.
20035
  • 2003, Co-chair of the Optical Networks Committee for the 5th Pacific Rim Conference on Lasers and Electro-Optics (CLEO/PR 2003), Taipei, Taiwan, July 22-26, 2003.
  • 2003, ECOC 2003 Advisory Board Member and Member of the Technical Program Committee, Subcommittee 5; Networks and Network Applications.
  • 2003, Executive Organizer of SPIE's ITCom 2003, and Conference Co-Chair, Optical Transmission Systems and Equipment for WDM Networking II, Part of SPIE's ITCom 2003, 7-11 September, 2003, Orlando, Florida.
  • 2003, Member of the International Advisory Committee of APOC 2003 (3rd Asia-Pacific Optical and Wireless Communications Conference), Wuhan, China, Nov. 2 - 6, 2003.
  • 2003, Member of the Program Committee of the 16th IEEE LEOS Annual Meeting, Tuscon, Arizona, October 26-30, 2003.
20028
  • 2002, Member of the OFC 2002 Technical Program Committee; Transmission Systems Subcommittee
  • 2002, ICC 2002 Symposium on Optical Networking, Technical Program Committee Member, New York, April 28-May 2, 2002
  • 2002, Member of the Technical Program Committee of the High Speed Networks Symposium, IEEE Globecom 2002.
  • 2002, Conference Co-Chair, Optical Transmission Systems and Equipment for WDM Networking, Part of SPIE's ITCom 2002- International Symposium and Exhibit on the Convergence of Information technology and Communications, 5-7 August, 2002, Boston, Massachusetts.
  • 2002, Member of the ECOC 2002 Technical Program Committee, Subcommittee 4; Networks and Switching
  • 2002, Member of the Program Committee of IEEE LEOS Summer Topical Meetings, All-Optical Networks: Existing and emerging architectures and applications, July 15-17, 2002.
  • 2002, Member of the Technical Program Committee of 2002 IEEE Workshop on IP Operation & Management (IPOM 2002), Dallas, Texas, October 29-31, 2002.
  • 2002, Member of the Program Committee of the 15th IEEE LEOS Annual Meeting, Glasgow, Scotland, November 10-14, 2002.
20013
  • 2001, Member of the OFC 2001 Technical Program Committee; Transmission Systems Subcommittee
  • 2001, OHAN/FSAN 2001, International Workshop on Optical Hybrid Access Networks/Full Service Access Networks 2001, Local Advisory Committee Member, April 4-6, 2001, Yokohama, Japan.
  • 2001, Member of the ECOC 2001 Technical Program Committee, Subcommittee 4; Networks and Switching
20005
  • 2000, IEEE ComSoc Workshop on IP-oriented Operations & Management IPON 2000, International Advisory Committee Member (Poland, Sept. 18-20, 2000).
  • 2000, IEICE Fifth Optoelectronics and Communications Conference OECC 2000, International Advisory Committee Member (Makuhari, Japan, July 11-14, 2000)
  • 2000, IEEE Globecom 2000 Symposium on Future Photonic Network Technologies, Architectures and Protocols, Technical Program Committee Member (San Francisco, Nov. 27-Dec. 1, 2000)
  • 2000, Member of the ECOC 2000 Technical Program Committee, Subcommittee 4; Networks and Switching
  • 2000, Globecom 2000 -Photonic Network Technologies Architectures & Protocol Symposium-,Session P-3 WDM Network Protocols, Organizer, IEEE Globecom 2000, 27 November-1 December, San Francisco.
19992
  • 1999, Member of the OFC/IOOC '99 Technical Program Committee; Networks, Switching and Access Subcommittee
  • 1999, 3rd IEEE International Workshop on Broadband Switching Systems, BSS '99 Technical Program Committee Member
19984
  • 1998, Co-organizer of the OFC '98 Workshop of "Optical Networking: Do the Network Operators need it?"
  • 1998, Co-organizer of the Fourth IEEE ComSoc ICC '98 Workshop on WDM Network Management and Control
  • 1998, Co-organizer of the OECC '98 (Third Optoelectronics and Communications Conference) Workshop on Impact of Photonic Networks on Multimedia Networking
  • 1998, OECC '98 (Third Optoelectronics and Communications Conference) Session Chair: Session 15D1; Towards the Photonic Networks; Today and Future.
19973
  • 1997, Co-organizer of the Third IEEE ComSoc ICC '97 Workshop on WDM Network Management and Control
  • 1997, IEEE LEOS 1997 Summer Topical Meetings Program Committee Member
  • 1997, APCC '97 Technical Program Committee Member
19961
  • 1996, Co-organizer of the Second IEEE ComSoc ICC '96 Workshop on WDM Network Management and Control
19951
  • 1995, Co-organizer of the First IEEE ComSoc ICC '95 Workshop on WDM Optical Network Management and Control
19931
  • 1993, Co-organizer of the OFC/IOOC '93 Workshop of "Theory and Modeling of Lightwave Networks"
19901
  • 1990, GLOBECOM '90 Session Organizer: Session 120; Transport Network Reliability Enhancement

PUBLICATIONS

Publications

Journal papers190

20204
  • Wavelength-Division Demultiplexing Enhanced by Silicon-Photonic Tunable Filters in Ultra- Wideband Optical-Path Networks
    Yojiro Mori, Eiji Honda, Ryuta Shiraki, Keijiro Suzuki, Hiroyuki Matsuura, Hitoshi Kawashima, Shu Namiki, Kazuhiro Ikeda, and Ken-ichi Sato
    IEEE/OSA Journal of Lightwave Technology, Vol. 38, No. 5, March 1, 2020, pp. 1002-1009.
  • Transmission-Quality-Aware Online Network Design and Provisioning Enabled by Optical Performance Monitoring
    Keisuke Kayano, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Shoichiro Oda, Setsuo Yoshida, and Takeshi Hoshida
    IEICE Transactions on Communications, vol. E103-B, No. 6, June 2020.
  • Architecture and Design of Coarse/Fine Hybrid Granular Routing Optical Networks
    Yusaku Ito, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    IEICE Trans. Commun., Vol.E103-B, No. 2, February 2020, pp. 118-129.
  • Design of seamlessly and limitlessly expandable OXC and verification tests on its versatile applicability
    Ryota Hashimoto, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    IEEE/OSA J. Optical Communications and Networking, Volume 12, Issue 5, May 2020 pp. 99-108.
20197
  • Assessment of node-and link-level blocking and creating cost-effective networks in the era of large bandwidth services
    Shuhei Yamakami, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Fumikazu Inuzuka, and Akira Hirano
    The IEICE Transactions on Communications, Vol.E102-B, No.3, pp. 510-521, Mar. 2019.
  • Design and Evaluation of Optical Circuit Switches for Intra-Datacenter Networking
    Y. Mori, Mungun-Erdene Ganbold and K. Sato
    IEEE/OSA J. Lightwave Technologies, Volume 37, Issue 2, January 2019, pp. 330-337. DOI: 10.1109/JLT.2019.2891209
  • Highly Dense Elastic Optical Networks Enabled by Grouped Routing with Distance-Adaptive Modulation
    Keisuke Kayano, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    IEEE Photonics Technology Letters, Volume, 31, Issue 4, Feb.15, 2019, pp. 295-298.
  • Effectiveness of Transmission-Quality-Aware Online Network Design and Provisioning Enabled through Optical Performance Monitoring
    Keisuke Kayano, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Shoichiro Oda, Setsuo Yoshida, and Takeshi Hoshida
    IEICE Communications Express (ComEX), Vol.8, No.4, January 21, 2019, pp. 81–86.
  • Improved Optical Amplification Efficiency by using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks
    Hitoshi Takeshita, Keiichi Matsumoto, Hiroshi Hasegawa, Ken-Ichi Sato, and Emmanuel Le Taillandier De Gabory
    . IEICE Transactions, Vol. E102-B, No. 8, pp. 1579-1589, August 2019.
  • Design and evaluation of quasi-Nyquist WDM networks utilizing widely deployed wavelength-selective switches
    Ryuta Shiraki, Hiroshi Hasegawa, Ken-Ichi Sato
    Optics Express, vol. 27, no. 13, 24 Jun 2019, pp. 18549-18560.
  • Digital post-processing against inline spectrum narrowing caused by optical node traversals
    Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    IEICE Communications Express, vol.8, No.4, January 2019, pp. 93-98.
20185
  • Enhancing Protection Performance by Effectively Using Spectral Slots of Impairment Aware Elastic Optical Networks [Invited]
    Hitoshi Takeshita, Takefumi Oguma, Shinsuke Fujisawa, Yuta Suzuki, Baku Yatabe, Akio Tajima, Hiroshi Hasegawa, and Ken-ichi Sato
    OSA/IEEE Journal of Optical Communications and Networking, Vol. 10, Issue 1, pp. A91-A101 (2018) (invited)
  • First Demonstration of Subsystem-Modular Optical Cross-Connect Using Single-Module 6x6 Wavelength-Selective Switch (invited)
    Ryota Hashimoto, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Keita Yamaguchi, Kazunori Seno, and Kenya Suzuki
    IEEE/OSA J. Lightwave Technologies, Volume 36, Issue 7, April 1, 2018, pp. 1435-1442.
  • Realization and Application of Large-scale Fast Optical Circuit Switch for Data Center Networking (invited)
    K. Sato
    IEEE/OSA J. Lightwave Technologies, Volume 36, Issue 7, April 1 2018, pp. 1411-1419. (invited)
  • A Large-Scale Optical Circuit Switch Using Fast Wavelength-Tunable and Bandwidth-Variable Filters
    Mungun-Erdene Ganbold, Hiroki Nagai, Yojiro Mori, Keijiro Suzuki, Hiroyuki Matsuura, Ken Tanizawa, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, and Ken-ichi Sato
    IEEE Photonics Technology Letters, Volume: 30, Issue: 16, Aug.15, 2018, pp. 1439 ? 1442.
  • Node Architectures and Cost Evaluation for Optical Networks that Adopt Spatial Division Multiplexing
    H. Hasegawa, and K. Sato
    The Review of Laser Engineering, The Laser Society of Japan, vol. 46, No. 8, August 2018, pp. 420-425.
201711
  • Design and Verification of Larg-Scale Optical Circuit Switch Using ULCF AWGs for Datacenter Application
    H. Nagai, Y. Mori, H. Hasegawa, and K. Sato
    OSA/IEEE Journal of Optical Communications and Networking Vol. 10, Issue 7, B82-B89 (2017).
  • Large-scale optical switch utilizing multistage cyclic Arrayed-Waveguide Gratings for intra-datacenter interconnection
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    IEEE Photonics Journal, Volume: 9, Issue: 1, Article Sequence Number: 7800412, Feb. 2017.
  • Optical Networking Paradigm: Past, Recent Trends and Future Directions
    Eiji Oki, Naoya Wada, Satoru Okamoto, Naoaki Yamanaka, and Ken-ichi Sato
    IEICE TRANS. COMMUN., Special Issue on the Past, Present, and Future of Communications Technologies in the IEICE, Vol. E100-B, No.9, pp.1564-1580, September, 2017. (Invited)
  • Algorithm for raising OXC port count to meet traffic growth at minimum-cost [Invited]
    Kosuke Sato, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    Journal of Optical Communications and Networking, Vol. 9, Issue 2, A263-A270 (2017). (Invited)
  • Fast Optical Circuit Switch for Intra-Datacenter Networking
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, Shu Namiki, Toshio Watanabe, and Ken-ichi Sato
    IEICE Transactions of Communication, Vol.E100-B, No.10 October 2017, pp. 1740-1746 (invited paper).
  • Compact OXC architecture, design and prototype development for flexible waveband routing optical networks
    Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, Suresh Subramaniam, Ken-ichi Sato, and Osamu Moriwaki
    Optics Express, vol. 25, No. 14, pp. 15838-15853, July 2017.
  • Highly reliable and large-scale subsystem-modular optical cross-connect
    Shuhei Yamakami, Yojiro Mori, Hiroshi Hasegawa, And Ken-ichi Sato
    OSA Optics Express, Vol. 25, Issue 15, pp. 17982-17994 (2017).
  • Large-scale optical node utilizing MxM WSSs optimally configured for traffic distribution
    Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    IEEE Photonics Technology Letters, Volume: 29, Issue:16, pp. 1293-1296, August 2017. (invited)
  • Dynamic path provisioning and disruption-free reoptimization algorithms for bandwidth on-demand services considering fairness
    Masahiro Nakagawa, Hiroshi Hasegawa, Ken-ichi Sato
    IEICE Transactions on Communications Vol.E100-B, No.4, pp. 536-547, April 2017.
  • Spectral Efficiency Maximization of Grouped Routing Optical Networks With Shared Protection
    Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    OSA/IEEE Journal of Optical Communications and Networking Vol. 9, Issue 10, pp. 864-875 (2017).
  • Tipping point for the future scalable OXC: What size MxM WSS is needed?
    M. Niwa Y. Mori, H. Hasegawa, and K. Sato
    Journal of Optical Communications and Networking, Vol. 9, Issue 1, A.18-A.25 (2017). (Invited).
201611
  • Large-scale optical-switch prototypes utilizing cyclic arrayed-waveguide gratings for datacenters
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, and Toshio Watanabe
    Journal of Lightwave Technology, volume 34, Issue 2, pp. 608 ? 617, January 15, 2016. (invited)
  • Ultra-low energy dynamic optical path network
    Shu Namiki, Kiyo Ishii, Ryousei Takano, Tomohiro Kudho, Junya Kurumida Hisato Uetsuka, Kazuhiro Ikeda, Hitoshi Kawashima, Takashi Inoue, Takayuki Kurose, Ken-ichi Sato
    The Journal of the IEICE, Vol.99, No.6, pp.563 -580, May 2016.
  • Novel optical-node architecture utilizing asymmetric-multiport wavelength-selective switches
    Masaki Niwa, Y. Mori, H. Hasegawa, and K. Sato
    IEEE Photonics Journal, Volume: 8, Issue: 2, April 2016, Article #: 0601210.
  • Large-scale and simple-configuration optical switch enabled by asymmetric-port-count sub-switches
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, and Toshio Watanabe
    IEEE Photonics Journal, Volume: 8, Issue: 2, April 2016, Article #: 0601610.
  • Highly spectral efficient networks based on grouped optical path routing
    Yuki Terada, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    Optics Express, Vol. 24, No. 6, Mar 2016, pp. 6213-6228.
  • Survivable grouped routing optical networks with dedicated path protection
    H. Hasegawa, Y. Mori, K. Sato
    IEICE Trans. Commun., VOL.E99-B, No.7, July 2016.
  • Dynamic router performance control utilizing support vector machines for energy consumption reduction
    H. Kawase, Y. Mori, H. Hasegawa, and K. Sato
    IEEE Transactions on Network and Service Management, Vol.13, Issue 4, December 2016, pp. 860-870.
  • Disruption-Free Expansion of Protected Optical Path Networks that Utilize Subsystem Modular OXC Nodes
    Kosuke Sato, H. Hasegawa, and K. Sato
    OSA J. Optical Commun. Network, JOCN, VOL.8, NO.7, JULY 2016, pp. 476-485.
  • Message from the President: Structuring the IEICE as a crucible of innovation
    Ken-ichi Sato
    The Journal of the IEICE, Vol. 99, No. 7, 2016, pp. 630-636. (Invited)
  • Node architecture and design of flexible waveband routing optical networks
    H. Hasegawa, S. Subramaniam, K. Sato
    J. Optical Communication Network, JOCN, Vol. 8, No. 10, October 2016, pp. 734-744.
  • Communication network paradigm shift spurred by contents providers, and prospects for future photonic networks
    Ken-ichi Sato
    The Journal of the IEICE, Vol. 99, No. 11, 2016, pp. 1053-1059. (Invited)
201510
  • Integrity enhancement of flexible/semi-flexible grid networks that minimizes disruption in spectrum defragmentation and bitrate dependent blocking
    Z. Shen, H. Hasegawa, K. Sato
    IEEE/OSA Journal of Optical Communications Network, Vol.7, No.4, April 1, 2015, pp. 235-247.
  • Optical technologies for the future
    Ken-ichi Sato
    OPTRONICS, No. 401, pp. 48-51, May 2015. (invited)
  • Wavelength-tunable filters utilizing arrayed waveguide gratings for Colorless/Directionless/Contentionless optical signal drop in ROADMs
    S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    IEEE Photonics Journal, Volume 7, Number 1, February 2015.
  • Performance analysis of large-scale OXC that enables dynamic modular growth
    Y. Tanaka, H. Hasegawa, K. Sato
    Optics Express, Vol. 23, Iss. 5, pp. 5994–6006 (2015).
  • Hardware scale and performance evaluation of compact subsystem modular optical cross connect that adopts tailored Add/Drop architecture
    H. Ishida, H. Hasegawa, K. Sato
    IEEE/OSA Journal of Optical Communications Network, Vol.7, No.6, June 2015, pp. 586-596.
  • Experimental verification of highly scalable OXC that consists of subsystem-modular express-switch part and multicast-switch-based add/drop part enabling total throughput of 314 Tbps
    S. Takashina, H. Ishida, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    IEEE Optics Express, Vol. 23, No. 11, May 2015, pp. 14796-14805.
  • Differential reliability path accommodation design and reconfiguration in virtualized multi-layer transport network
    Akihiro Kadohata, Takafumi Taanaka, Atsushi Watanabe, Akira Hirano, Hiroshi Hasegawa, and Ken-ichi Sato
    IEICE Trans. on Communications, Vol. E98-B, No. 11, pp. 2151–2159, November 2015.
  • Criteria for selecting subsystem configuration in creating large-scale OXCs
    Y. Tanaka, H. Hasegawa, K. Sato
    Journal of Optical Communications and Networking Vol. 7, Issue 10, pp. 1009-1017 (2015).
  • Pre-adjustment rerouting for wavelength defragmentation in optical transparent WDM networks
    Akihiro Kadohata, Atsushi Watanabe, Akira Hirano, Hiroshi Hasegawa, and Ken-ichi Sato
    IEICE Trans. on Communications, Vol.E98-B, No.10, October 2015, pp. 2014-2021.
  • Unifying top-down and bottom-up approaches to evaluate network energy consumption
    Kiyo Ishii, Junya Kurumida, Ken-ichi Sato, Tomohiro Kudoh, and Shu Namiki
    IEEE Journal of Lightwave Technology, Vol. 33, Issue 21, August 2015, pp. 4395-4405.
201313
  • A novel elastic optical path network that utilizes bitrate-specific anchored frequency slot arrangement
    Z. Shen, H. Hasegawa, K. Sato, T. Tanaka, and A. Hirano
    Optics Express, Vol. 22, Iss. 3, pp. 3169–3179, February 2014. ECOC 2013 Special Issue (invited submission as the best papers from ECOC 2013).
  • Performance evaluations of large-scale multi-stage hetero-granular optical cross-connects
    L. H. Chau, H. Hasegawa and K. Sato
    Optics Express, Vol. 22, Iss. 3, pp. 3157–3168, February 2014. ECOC 2013 Special Issue (invited submission as the best papers from ECOC 2013).
  • PCE-based fast path control in multi-domain photonic networks
    Y. Iizawa, S. Araki, S. Ishida, I. Nishioka, K. Shimada, H. Hasegawa, K. Sato
    ELSEVIER, Optical Switching and Networking, vol. 10, Issue 1, January 2013, pp. 32-43.
  • An efficient heuristic waveband assignment algorithm for hierarchical optical path networks utilizing wavelength convertors
    Z. Shen, H. Hasegawa, and K. Sato
    ELSEVIER, Optical Switching and Networking, Volume 10, Issue 1, January 2013, Pages 54–61.
  • Prospects of future photonic networking technologies
    K. Sato
    Vol. J96-B, No. 3, pp. 220-232, March 2013. (invited)
  • Performance evaluation of large capacity ultra-compact waveband cross-connect
    T. Ban, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno
    IEEE Photonics Technology Letters, Vol. 25, Issue 5, pp. 446-449, March 2013.
  • Efficient shared protected network design algorithm that iterates path relocation with new resource utilization metrics
    M. Sato, H. Hasegawa, and K. Sato
    IEICE, vol. E96-B, No. 04, pp. 956-966, April 2013.
  • A large-scale photonic node architecture that utilizes interconnected OXC subsystems
    Y. Iwai, H. Hasegawa, and K. Sato
    OSA Optics Express, Vol. 21 Issue 1, January 14, 2013, pp.478-487 (2013).
  • A novel large-scale OXC architecture and an experimental system that utilizes wavelength path switching and fiber selection
    T. Ban, H. Hasegawa, K. Sato, T. Watanabe, and H. Takahashi
    OSA Optics Express, Vol. 21 Issue 1, pp.469-477 (2013).
  • Hierarchical optical cross-connect node architecture
    H. Hasegawa, and K. Sato
    Japanese journal of optics, Optical Society of Japan, Vol. 42, No. 05, pp. 229-235, May 2013.
  • Coarse granular optical routing networks utilizing fine granular add/drop
    Y. Taniguti, Y. Yamada, H. Hasegawa, and K. Sato
    IEEE/OSA Journal of Optical Communications and Networking, Vol. 5, Issue 7, pp. 774-783 (2013).
  • Large scale wavelength routing optical switch for data center networks
    K. Sato, H. Hasegawa, and T. Watanabe
    IEEE Communications Magazine, vol. 51, No. 9, September 2013, pp. 46-52. (Invited)
  • Effectiveness of wavelength/waveband conversion and its allowable cost bound for hierarchical optical path networks
    Zhi-shu Shen, Hiroshi Hasegawa, and Ken-ichi Sato
    IEEE/OSA JOCN, Vol. 5, Iss. 11, November, 2013; pp: 1262-1274.
20129
  • Virtual fiber networking and impact of optical path grooming on creating efficient layer one services
    F. Naruse, H. Hasegawa, and K. Sato
    IEICE Trans. Commun., Vol.E95-B, No.03, pp. 723-729, March 2012.
  • Optical node architecture that utilize dedicated add/drop switches to realize colorless, directionless and contentionless capability
    Y. Yamada, H. Hasegawa, and K. Sato
    IEICE Trans. Commun., vol. E95-B, No. 4, April 2012, pp. 1307-1316.
  • Effects of optical layer protection granularity in survivable hierarchical optical path network
    Y. Yamada, H. Hasegawa, and K. Sato
    IEICE Trans. on Communications, vol. E95-B, No.9, September 2012, pp.2959-2963.
  • Evaluations of OXC hardware scale and network resource requirements of different optical path add/drop ratio restriction schemes [Invited]
    F. Naruse, Y. Yamada, H. Hasegawa, and K. Sato
    IEEE/OSA Journal of Optical Communications and Networking (JOCN), vol. 4, No. 11, pp. B26–B34, November, 2012. (invited)
  • Optical fast circuit switching networks employing dynamic waveband tunnel
    T. Ogawa, H. Hasegawa, K. Sato
    IEICE, vol. E95-B, No. 10, October 2012, pp. 3139-3148.
  • Router power saving employing dynamic performance control based on traffic predictions
    H. Ito, H. Hasegawa, and K. Sato
    IEICE Trans. Commun., Vol. E95-B, No. 10, pp. 3130-3138, October 2012.
  • Novel wavelength tunable filter offering multi-stage selection for colorless, directionless, and contentionless ROADMs
    T. Niwa, H. Hasegawa, K. Sato, T. Watanabe, H. Takahashi, M. Okuno
    IEICE Electronics Express, vol. 9, No. 16, August 2012, pp. 1297-1303.
  • A large port count wavelength routing optical switch that consists of cascaded small-size cyclic Arrayed Waveguide Gratings
    T. Niwa, H. Hasegawa, K. Sato, T. Watanabe, and H. Takahashi
    IEEE Photonics Technology Letters, vol. 24, Issue 22, pp. 2027-2030, November 2012.
  • Impact of elastic optical paths that adopt distance adaptive modulation to create efficient networks
    T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and Masahiko Jinno
    IEICE, vol. E95-B, No.12, pp. 3793-3801, December 2012.
20117
  • Development of Terabit-scale compact hierarchical optical cross-connect system using planar device integration
    O. Moriwaki, K. Noguchi, H. Takahashi, T. Sakamoto, K. Sato, H. Hasegawa, M. Okuno, and Y. Ohmori
    IEEE Journal of Lightwave Technology, vol. 29, No. 4, February 2011, pp. 449-455.
  • Compact matrix-switch-based hierarchical optical path cross-connect with colorless waveband add/drop ratio restriction
    R. Hirako, H. Hasegawa, K. Sato, and M. Okuno, and O. Moriwaki
    IEICE Special Issue on Photonic Network Technologies in Terabit Network Era, 2011, IEICE Trans. Commun., Vol. E94-B, No. 4, April 2011, pp. 918-927.
  • Hybrid hierarchical optical path network design algorithms utilizing ILP optimization
    L. H. Chau, H. Hasegawa, and K. Sato
    Elsevier, Optical Switching and Networking, Special Issue, vol. 8, 2011, pp. 226-234.
  • Hierarchical optical path network design with dedicated wavelength path protection
    Y. Yamada, H. Hasegawa, and K. Sato
    Journal of Lightwave Technology, vol. 29, No. 21, Nov. 2011, pp. 3196-3209.
  • A dynamic and quasi-centralized RWA method for optical fast circuit switching networks employing route pre-prioritization
    H. Ohno, H. Hasegawa, and K. Sato
    Elsevier, Optical Switching and Networking, Special Issue, vol. 8, No. 4, December 2011, pp. 242-248.
  • Development of hierarchical optical path cross-connect systems employing wavelength/waveband selective switches
    K. Ishii, S. Mitui, H. Hasegawa, K. Sato, S. Kamei, M. Okuno, and H. Takahashi
    IEEE/OSA Journal of Optical Communications and Networking, Vol. 3, Issue 7, pp. 559-567, July 2011.
  • Impact of electrical grooming and regeneration of wavelength paths in creating hierarchical optical path networks
    L. H. Chau, H. Hasegawa and K. Sato
    OSA, Optics Express, vol. 19, No. 26, December 2011, B882-B894.
20106
  • Wavelength assignment for concatenated ROADM ring networks and switch scale reduction in a concatenating node
    K. Ishii, H. Hasegawa, and K. Sato
    Journal of Optical Communications and Networking (JOCN), vol. 2, No. 1, January 2010, pp. 67-79.
  • Volume: 22, No. 7, pp. 489-500, 2010.
  • Vol. 22, No. 23, pp. 1741-1743, December 2010.
  • Role of optical network technologies that allow sustainable evolution of information and communication network
    K. Sato
    The Journal of the IEICE, vol. 93, No. 8, pp. 654-658, August 2010.
  • Multi-hop signal transmission experiments employing PLC-based hierarchical optical cross-connect system
    O. Moriwaki, K. Noguchi, H. Takahashi, T. Sakamoto, K. Sato, H. Hasegawa, M. Okuno, and Y. Ohmoroi
    IEEE Photonic Technology Letters, vol. 22, No. 21, November 2010, pp. 1586-1588.
  • Hierarchical Optical Path Network Design Algorithm Considering Waveband Add/Drop Ratio Constraint
    L. H. Chau, H. Hasegawa, K. Sato
    IEEE/OSA Journal of Optical Communications and Networking, JOCN, vol. 2, No. 10, October 2010, pp. 872-882.
20093
  • Hierarchical optical path network design algorithm considering waveband protection
    Y. Yamada, H. Hasegawa, and K. Sato
    Journal of Lightwave Technology, vol. 27, No. 24, Dec. 2009, pp. 5736-5748.
  • Analysis and development of fixed and variable waveband MUX/DEMUX utilizing AWG routing functions
    S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki, and S. Kamei
    IEEE JLT, vol. 27, No. 1, January 2009, pp. 30-40.
  • Optical networking technologies that will create future bandwidth abundant networks
    K. Sato and H. Hasegawa
    Journal of Optical Communications and Networking, Special Issue on Optical Networks for Future Internet, vol. 1, No. 2, July 2009 [Invited], pp. A81-A93. A paper selected for Spotlight on Optics of OSA in July 2009. (Invite)
20083
  • Quasi-Dynamic Network Design Considering Different Service Contract Terms
    K. Kanie, H. Hasegawa, and K. Sato
    IEEE J-SAC, OCN, vol. 26, No. 3, April 2008, pp. 47-53.
  • Optical cross-connect switch architectures for hierarchical optical path networks
    S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki, and S. Kamei
    IEICE Trans. Commun., vol. E91-B, No. 10, October 2008, pp. 3174-3184.
  • An efficient hierarchical optical path network design algorithm based on traffic demand expression in a Cartesian produce space
    Yagyuu, H. Hasegawa, and K. Sato
    IEEE Journal of Selected Areas in Communications (J-SAC), Supplement on Optical Communications and Networking (OCN), vol. 26, No. 6, August 2008, pp. 22-31.
20076
  • Recent developments in and challenges of photonic networking technologies
    K. Sato
    IEICE Trans. Commun., vol. E90-B, No. 3, March 2007, pp. 454-467.
  • Advances in photonic network technologies
    K. Sato
    The IEICE Communications Society Magazine, No. 1,June 2007, pp. 76-88, (in Japanese).
  • Prospects and challenges of multi-layer optical networks
    K. Sato and H. Hasegawa
    IEICE Trans. Commun., Vol. E90-B, No. 8, pp. 1890-1902, 2007.
  • Loop-back AWG Router with Non-uniform Transmission Capacity
    Moriwaki, K. Suzuki, H. Takahashi, Y. Sakai, K. Sato, and S. Kakehashi
    IEEE Photonic Technology Letters, vol. 19, No. 17, September 2007, pp. 1319-1321.
  • Performance of Waveband MUX/DEMUX Using Concatenated AWGs
    S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki, S. Kamei, Y. Jinnouchi, and M. Okuno
    IEEE Photonic Technology Letters, vol. 19, No. 16, August 2007, pp. 1197-1199.
  • Formulation of waveguide connection for waveband MUX/DEMUX using concatenated Arrayed-Waveguide Gratings
    S. Kakehashi, H. Hasegawa, K. Sato and O. Moriwaki
    IEICE Trans. Commun. Letter, vol. E90-B, No. 10, October 2007, pp. 2950-2952.
20052
  • Network design and cost optimization for label switched multi-layer photonic IP networks
    S. Kaneda, T. Uyematsu, N. Nagatsu and K. Sato
    IEEE J-SAC, vol. 23, No. 8, August 2005, pp. 1612-1619.
  • Photonic network R&D activities in Japan - Current activities and future perspectives -
    Ken-ichi Kitayama1, Tetsuya Miki, Toshio Morioka, Hideaki Tsushima, Masafumi Koga, Kazuyuki Mori, Soichiro Araki, Ken-ichi Sato, Hiroshi Onaka, Shu Namiki, and Tomonori Aoyama
    IEEE J. Lightwave Technology, vol. 23, No. 10, October 2005, pp. 3404-3418.
20041
  • Network design for multi-layered photonic IP networks considering IP traffic growth
    S. Kaneda, T. Uyematsu, N. Nagatsu and K. Sato
    IEICE Trans. Commun., vol. E87-B, No. 2, February 2004.
20033
  • Photonic router: development of the next generation router technology
    Y. Takigawa, M. Koga and K. Sato
    The Journal of the IEICE, vol. 86, No. 2, pp. 78-81, February 2003.
  • Fast restoration on network control plane established through photonic MPLS routers
    K. Shimano, A. Sahara, K. Noguchi, M. Koga, Y. Takigawa and K. Sato
    IEICE Trans. on Commun., vol. E86-B, No. 5, May 2003, pp. 1522-1529.
  • Photonic MPLS router to create bandwidth-abundant IP networks
    Watanabe, K. Noguchi, K. Shimano, T. Kawai, E. Yoshida, A. Sahara, T. Takahashi, S. Okamoto, T. Goh, Y. Takigawa, M. Koga, and K. Sato
    IEEE Journal of Lightwave Technology, vol. 21, No. 11, November 2003, pp. 2851-2862.
20023
  • Cutting-edge technologies on photonic backbone networks
    K. Sato and K. Kitayama
    The Journal of the IEICE, vol. 85, No. 2, February 2002, pp. 94-103 (in Japanese).
  • Recent progress in broadband photonic transport network development
    K. Sato
    IEICE Trans. on Electronics, vol. J85, No. 5, May 2002, pp. 333-347 (in Japanese).
  • GMPLS-based photonic multi-layer router (Hikari router) architecture: An overview of traffic engineering and signaling technology
    K. Sato, N. Yamanaka, Y. Takigawa, M. Koga, S. Okamoto, K. Shiomoto, E. Oki and W. Imajuku
    IEEE Communications Magazine, vol. 40, No.3, March 2002, pp. 96-101.
20005
  • Dense WDM Transmission
    K. Sato and H. Toba
    Kougaku, vol.29, No. 3, pp.120-130, 2000 (in Japanese).
  • Digital communications
    M. Aoki, K. Yukimatsu and K. Sato
    The Journal of the IEICE, vol. 83, No. 1, January 2000, pp. 23-27 (in Japanese).
  • IP backbone network utilizing photonic transport network technologies
    S. Okamoto, M. Koga, A. Watanabe and K. Sato
    Optical Networks Magazine, vol. 1, No. 1, January 2000, pp. 19-28
  • Photonic transport networks based on wavelength division multiplexing technologies
    K. Sato
    Philosophical Transactions of The Royal Society, Mathematical, Physical and Engineering Sciences, vol. 358, No. 1773, August 2000, pp. 2265-2281.
  • More than 1000 channel optical frequency chain generation from single supercontinuum source with 12.5 GHz channel spacing
    H. Takara, T. Ohara, K. Mori, K. Sato, E. Yamada, T. Inoue, T. Shibata, M. Abe, T. Morioka, and K-I Sato
    IEE Electronics Letters, vol.36, no.25, 2000, pp. 2089-2090.
19995
  • Future photonic transport networks based on WDM technologies
    H. Yoshimura, K. Sato and N. Takachio
    IEEE Communications Magazine, vol. 37, No. 2, February 1999, pp. 74-81.
  • Compact 8x8 optical switching board implemented with connection supervision and optial power control function
    Y. Hamazumi, T. Kawai, M. Koga, and K. Sato
    IEEE, Photonic Technology Letters, vol. 11, No. 3, March 1999, pp. 370-372.
  • Photonic transport technologies to create robust backbone networks
    K. Sato and S. Okamoto
    IEEE Communications Magazine, vol. 37, No. 8, August 1999, pp.78-87.
  • Flexible OADM architecture and its impact on WDM ring evolution for robust and large-scale optical transport networks
    N. Nagatsu, S. Okamoto, K. Koga and K. Sato
    IEICE Trans. Commun., vol. E82-B, No. 8, August 1999, pp. 1105-1114.
  • Robust backbone network utilizing WDM optical paths
    A. Watanabe, S. Okamoto, and K. Sato
    IEICE Trans. Commun., vol. E82-B, No. 8, August 1999, pp. 1115-1120.
19983
  • Design and performance of delivery and coupling switch board for large scale optical path cross-connect system
    A. Watanabe, S. Okamoto, M. Koga, K. Sato and M. Okuno
    IEICE, vol. E81-B, No. 6, June 1998, pp.1203-1212.
  • Large-capacity optical path cross-connect system for WDM photonic transport network
    (M. Koga, A. Watanabe, T. Kawai, K. Sato and Y. Ohmori
    J-SAC, vol. 16, No. 7, September 1998, pp. 1260-1269.
  • Introduction strategy of photonic network technologies to create bandwidth abundant multimedia networks
    K. Sato
    Trends in Optics and Photonics; Optical Society of America, vol. 20, June 1998, pp. 9-17.
19976
  • 8x16 delivery and coupling switch board for 320Gb/s throughput optical path cross-connect system
    A. Watanabe, S. Okamoto, M. Koga, K. Sato and M. Okuno
    Electronics Letters, vol. 33, No. 1, January 1997, pp. 67-68.
  • Transport performance in optical path cross-connect system employing unequally spaced channel allocation
    Y. Hamazumi, M. Koga, M. Ishii, S. Suzuki and K. Sato
    IEEE Journal of Lightwave Technologies, vol.15, No. 4, April 1997, pp. 616-627.
  • Trends of photonic transport network technologies
    K. Sato and H. Toba
    IEICE Trans. on Communications, The Journal of the IEICE, vol. 80, No. 9, September 1997, pp. 947-959 (in Japanese).
  • Network architecture for optical path transport networks
    S. Okamoto, K. Oguchi and K. Sato
    IEEE Transactions on Communications, vol. 45, No. 8, August 1997, pp. 968-977.
  • Photonic network and WDM
    K. Sato and N. Takachio
    O plus E, Ohm Publishing Co., No. 215, October 1997, pp. 90-99 (in Japanese).
  • Architectural analysis of multiple fiber ring networks employing optical paths
    N. Nagatsu, S. Okamoto and K. Sato
    IEEE Journal of Lightwave Technology, vol. 15, No. 10, October 1997, pp.1794-1804.
199611
  • 4x4 port optical path cross-connection with 8x2.5 Gb/s unequally-spaced channel 4x100 km transportation
    Y. Hamazumi, A. Watanabe, M. Koga, M. Ishii, S. Suzuki and K. Sato
    IEE Electronics Letters, vol. 32, No.8, April 1996, pp. 746-747.
  • ATM network resource management techniques for CBR virtual Paths/channels
    Y. Sato, N. Yamanaka and K. Sato
    IEICE Trans. on Communications, vol. E79-B, No. 5, May 1996, pp. 684-692.
  • Beat induced crosstalk reduction against wavelength difference between signal and four-wave mixing lights in unequal spacing WDM transmission
    Y. Hamazumi, M. Koga and K. Sato
    IEEE Photonics Technology Letters, vol. 8, No. 5, May 1996, pp. 718-720.
  • Design and performance of optical path cross-connect system based on wavelength path concept
    M. Koga, Y. Hamazumi, A. Watanabe, S. Okamoto, H. Obara, K. Sato, S. Suzuki and M. Okuno
    Special Joint Issue of IEEE Journal of Lightwave Technology and IEEE Journal on Selected Areas in Communications, vol. 14, No. 6, June 1996, pp.1106-1119.
  • Optical path cross-connect architectures for photonic transport network
    S. Okamoto, A. Watanabe and K. Sato
    Special Joint Issue of IEEE Journal of Lightwave Technology and IEEE Journal on Selected Areas in Communications, vol. 14, No. 6, June 1996, pp. 1410-1422.
  • Optical path cross-connect system evaluation using path accommodation design for restricted wavelength multiplexing
    N. Nagatsu, S. Okamoto and K. Sato
    Special Joint Issue of IEEE Journal on Selected Areas in Communications and IEEE Journal of Lightwave Technology, vol. 14, No. 5, June 1996, pp. 893-902.
  • 8x16 delivery-and-coupling type optical switches for a 320-Gibabit/s throughput optical path cross-connect system
    M. Koga, A. Watanabe, S. Okamoto, K. Sato and M. Okuno
    Electronics Letters, vol. 32, No. 13, June 1996, pp. 1213-1214.
  • Transport experiment of 320-Gbit/s throughput non-regenerative optical path cross-connect system
    M. Koga, Y. Hamazumi, K. Sato and Y. Ohmori
    Electronics Letters, vol. 32, No. 17, August 1996, pp. 1607-1608.
  • Optical path cross-connect system architecture suitable for large scale expansion
    A. Watanabe, S. Okamoto and K. Sato
    IEEE Journal of Lightwave Technology, vol. 14, No. 10, October 1996, pp.2162-2172.
  • Design and performance of multiwavelength simultaneous monitoring circuit employing arrayed-waveguide grating
    M. Teshima, M. Koga and K. Sato
    IEEE Journal of Lightwave Technology, vol. 14, No. 10, October 1996, pp.2277-2285.
  • Photonic transport network OAM technologies
    K. Sato
    IEEE Communications Magazine, Special issue on "Operation and management of broadband networks," vol. 34, No. 12, December 1996, pp.86-94.
19959
  • Optical path accommodation designs applicable to large scale networks
    N. Nagatsu, Y. Hamazumi and K. Sato
    IEICE Transactions on Communications, vol. E78-B, No. 4, April 1995, pp. 597-607.
  • Jitter tolerant usage parameter control method for ATM-based B-ISDN
    N. Yamanaka, T. Takenaka, Y. Sato and K. Sato
    IEICE Transactions on Communications, Special Issue on Traffic & Quality Control for Communication Networks, Vol. E78-B-I, No.4, April 1995, pp. 485-493.
  • Optical path cross-connect node architecture offering high modularity for Virtual Wavelength Paths
    A. Watanabe, S. Okamoto and K. Sato
    Trans. on IEICE Japan, vol. E78-B, No. 5, May 1995, pp. 686-693.
  • Analyses of Virtual Path bandwidth control effects in ATM networks
    H. Hadama, K. Sato and I. Tokizawa
    IEICE Trans. on Commun., vol. E78-B, No. 6, June 1995, pp.907-915.
  • Performance limitation of the leaky bucket algorithm for ATM networks
    N. Yamanaka, Y. Sato and K. Sato
    IEEE Trans. on Commun., vol. 43, No. 8, August 1995, pp. 2298-2300.
  • Optical path cross-connect systems transport experiment with simulated five-node network
    M. Koga, Y. Hamazumi, A. Watanabe and K. Sato
    Electronics Letters vol. 31, No. 17, August 1995, pp. 1470-1471.
  • Optical path accommodation design enabling cross-connect system scale evaluation
    N. Nagatsu, and K. Sato
    IEICE Trans. on Communications, vol. E78-B, No. 9, september 1995, pp. 1339-1343.
  • Multiwavelength simultaneous monitoring circuit employing wavelength crossover properties of arrayed-waveguide grating
    M. Teshima, M. Koga and K. Sato
    Electronics Letters, vol. 31, No. 18, August 1995, pp. 1595-1597.
  • Photonic transport networks based on optical paths
    K. Sato, S. Okamoto and A. Watanabe
    International Journal of Communication Systems, vol. 8, No. 6, November-December 1995, pp. 377-389.
19948
  • Fast VP-bandwidth management with distributed control in ATM networks
    R. Kawamura, H. Hadama, K. Sato and I. Tokizawa
    IEICE Trans. Commun., vol. E77-13, No. 1, January 1994, pp. 5-14.
  • Virtual Path restoration techniques with centralized control functions in ATM networks
    H. Hadama, R. Kawamura and K. Sato
    IEICE Trans. on IEICE Japan, B-I vol. J77-B-I, No. 3, pp. 115-123, March 1994 (in Japanese).
  • Network performance and integrity enhancement with optical path layer technologies
    K. Sato, S. Okamoto and H. Hadama
    IEEE Journal of Selected Areas in Communications, vol. 12, No. 1, January 1994, pp. 159-170.
  • Self-healing ATM networks based on Virtual Path concept
    R. Kawamura, K. Sato and I. Tokizawa
    IEEE Journal of Selected Areas in Communications, vol. 12, No. 1, January 1994, pp. 120-127.
  • Number of wavelengths required for constructing optical path network considering failure restoration
    Y. Hamazumi, N. Nagatsu, S. Okamoto and K. Sato
    Trans. on IEICE Japan, vol. J77-B-I, No. 5, 1994, pp. 275-284 (in Japanese).
  • Optical path cross-connect node architecture with high modularity for photonic transport network
    A. Watanabe, S. Okamoto and K. Sato
    IEICE Trans. Commun., vol. E77-B, No. 10, October. 1994, pp. 1220-1229.
  • A new optical path cross-connect system architecture utilizing delivery and coupling matrix switch
    S. Okamoto, A. Watanabe and K. Sato
    IEICE Trans. Commun., vol. E77-B, No. 10, October 1994, pp. 1272-1274.
  • Number of wavelengths required for constructing large scale optical path networks
    N. Nagatsu, Y. Hamazumi and K. Sato
    Trans. on IEICE Japan, vol. J77-B-I, No. 12, December 1994, pp. 728-737 (in Japanese).
19935
  • Usage parameter control and bandwidth allocation methods considering cell delay variation in ATM networks
    N. Yamanaka, Y. Sato and K. Sato
    IEICE Trans. Commun., vol. E76-B, No. 3, March 1993, pp. 270-279.
  • ATM VP-based broadband networks for multimedia services
    T. Aoyama, I. Tokizawa and K. Sato
    Communications Magazine, April 1993, pp. 30-39.
  • Traffic Management for CBR-VPs Considering Cell Delay Variation
    Y. Sato, N. Yamanaka and K. Sato
    Trans. on IEICE Japan, vol. J76-B-I, No. 5, 1993, pp. 416-418 (in Japanese).
  • Smoothing control of CBR cell traffic in ATM networks
    Y. Sato and K. Sato
    Trans. on IEICE Japan, vol. J76-B-I, No. 10. 1993, pp. 736-739 (in Japanese).
  • Traffic management method for ATM network using precise UPC scheme
    N. Yamanaka, Y. Sato and K. Sato
    Trans. on IEICE Japan, vol. J76-B-I, No. 3. 1993, pp. 253-263 (in Japanese).
19927
  • Performance limitation of leaky bucket algorithm for usage parameter control and bandwidth allocation methods
    N. Yamanaka, Y. Sato and K. Sato
    IEICE Trans. Commun., vol. E75-B, No. 2, February 1992, pp. 82-86.
  • Dynamic bandwidth control of the Virtual Path in an Asynchronous Transfer Mode network
    S. Ohta and K. Sato
    IEEE Trans. on Commun., vol. 40, No. 7, July 1992, pp. 1239-1247.
  • Evaluation of statistical cell multiplexing effects and path capacity design in ATM networks
    Y. Sato and K. Sato
    IEICE Trans. Commun., vol. E75-B, No. 7, July 1992, pp. 642-648.
  • Traffic shaping for VBR traffic in ATM networks
    N. Yamanaka, Y. Sato and K. Sato
    IEICE Trans. Commun., vol. E75-B, No. 10, October 1992, pp. 1105-1108.
  • Precise UPC scheme suitable for ATM networks characterized by widely ranging traffic parameter values
    N. Yamanaka, Y. Sato and K. Sato
    IEICE Trans. Commun., vol. E75-B, No. 12, Dec. 1992, pp. 1367-1372.
  • Precise UPC scheme and bandwidth allocation methods for ATM-based B-ISDN characterized by wide-ranging traffic parameter values
    N. Yamanaka, Y. Sato and K. Sato
    Int. Journal of Digital and Analog Communication Systems, vol. 5, No.4, October-November 1992, pp. 203-215.
  • Introduction strategy and technologies for ATM VP-based broadband network
    T. Aoyama, I. Tokizawa and K. Sato
    IEEE J-SAC, vol. 10, No. 9, December 1992, pp. 1434-1447.
19914
  • Virtual path and link capacity design for ATM networks
    Y. Sato and K. Sato
    IEEE J-SAC, vol. 9, No. 1, January 1991, pp. 104-111.
  • Traffic control technologies in ATM networks
    H. Saito, K. Kawashima and K. Sato
    IEICE Transactions, vol. E 74, No. 4, April 1991, pp. 761-771.
  • Self-healing techniques utilizing Virtual Path concept for ATM networks
    R. Kawamura, H. Hadama and K. Sato
    Trans. on IEICE Japan, vol. J74-B-I, No. 7, pp. 537-546, November 1991, (in Japanese).
  • The roll of Virtual Path cross-connection
    K. Sato, H. Ueda and N. Yoshikai
    IEEE LTS (The Magazine of Lightwave Telecommunication Systems), vol. 2, No. 3, August 1991, pp. 44-54.
19902
  • Variable rate speech coding for Asynchronous Transfer Mode
    H. Nakada and K. Sato
    IEEE Trans. Commun., vol. 38, No. 3, March 1990, pp. 277-284.
  • Broad-band ATM network architecture based on Virtual Paths
    K. Sato, S. Ohta and I. Tokizawa
    IEEE Trans. Commum., vol. 38, No. 8, pp. 1212-1222, August 1990.
19892
  • Broadband transport network architecture based on Virtual Path concept
    K. Sato, S. Ohta and I. Tokizawa
    Trans. on IEICE Japan, vol. J72-B-I, No. 11, pp. 904-916, November 1989, (in Japanese).
  • Statistical multiplexing characteristics of multimedia traffic in high-speed burst transport system
    Y. Sato and K. Sato
    Trans. on IEICE Japan, vol. J72-B-I, No. 11, pp. 1112-1119, November 1989, (in Japanese).
19881
  • Delay analysis of multi-node queueing system
    Y. Sato and K. Sato
    Trans. on IEICE Japan, vol. J71-B, No. 6, pp. 669-677, June 1988, (in Japanese).
19852
  • Fiber-optic analog/digital hybrid signal transmission employing frequency modulation
    K. Sato, S. Aoyagi and T. Kitami
    IEEE Trans. on Commun., vol. COM-33, No. 5, May 1985, pp. 433-441.
  • Fiber-optic video transmission employing square wave frequency modulation
    K. Sato, S. Aoyagi and T. Kitami
    IEEE Trans. on Commun., vol. COM-33, No. 5, May 1985, pp. 417-424.
19841
  • Fiber-optic analog/digital hybrid signal transmission employing FM
    S. Aoyagi, K. Sato and T. Kitami
    J. IECE Japan, vol. J67-B, No. 8, pp. 926-927, August 1984, (in Japanese).
19831
  • Intensity noise of semiconductor laser diodes in fiber optic analog video transmission
    K. Sato
    IEEE J. Quantum Electron., vol. QE-19, No. 9, pp. 1380-1391, Sept. 1983.
19812
  • Speckle noise reduction in fiber optic analog video transmission using semiconductor laser diodes
    K. Sato and K. Asatani
    IEEE Trans. on Commun., vol. COM-29, No. 7, pp. 1017-1024, July 1981.
  • Linearity in fiber-optic analog transmission systems using laser diodes
    K. Sato and K. Asatani
    Trans. IECE Japan, vol. E64, No. 10, pp. 646-652, Oct. 1981.
19804
  • Polarization-independent optical circulator: an experiment
    T. Matsumoto and K. Sato
    Appl. Opt. vol. 19, No. 1, pp. 108-112, Jan. 1980.
  • A study on analog video transmission using semiconductor laser diodes
    K. Sato and K. Asatani
    Trans. IECE Japan, vol. 63-B, No. 11, pp. 1086-1093, Nov. 1980, (in Japanese).
  • Superimposed pulse modulation for fiber optic analog video transmission using semiconductor laser diodes
    K. Sato and K. Asatani
    Electron. Letters, vol. 16, No. 14, pp. 538-540, July 1980.
  • Fiber optic analog transmission experiment for high-definition television signals using semiconductor laser diodes
    K. Asatani, K. Sato, K. Maki and T. Miki
    Electron. Letters, vol. 16, No. 14, pp. 536-538, July 1980.
19794
  • Photoluminescent properties of ZnS grown from tellurium solution
    K. Sato and M. Aoki
    Jpn. J. Appl. Phys., vol. 18, No. 3, pp. 705-706, Mar. 1979.
  • Solution grown of ZnS, ZnSe, CdS and their mixed compounds using tellurium as a solvent
    M. Washiyama, K. Sato and M. Aoki
    Jpn. J. Appl. Phys., vol. 18, No. 5, pp. 869-872, May 1979.
  • Estimation of bandwidths of long-distance graded-index multimode fibers
    T. Matsumoto, K. Sato and I. Nakagawa
    Trans. IECE Japan, vol. 62-B, No. 12, pp. 1163-1170, Dec. 1979, (in Japanese).
  • Analog baseband TV transmission experiments using semiconductor laser diodes
    K. Sato and K. Asatani
    Electron. Letters, vol. 15, No. 24, pp. 794-795, Nov. 1979.
19771
  • Dispersion of photoelastic coefficients in ZnSe
    K. Tada, K. Kikuchi and K. Sato
    Jpn. J. Appl. Phys., vol. 16, No. 5, pp. 757-760, May 1977.
Other3
  • Assessment of optical node architectures for building next generation large bandwidth networks
    Mungun-Erdene Ganbold, Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Fumikazu Inuzuka, Akira Hirano, and Ken-ichi Sato
    to appear in IEICE Trans. Commun.
  • Development of hierarchical optical cross-connect system for ROADM-ring connection using PLC technologies
    K. Ishii, O. Moriwaki, H. Hasegawa, and K. Sato, Y. Jinnouchi, M. Okuno, and H. Takahashi
    Photonics Technology
  • Ultra-compact waveband cross-connect module using waveband selective switches: development and performance verification
    K. Ishii, H. Hasegawa, K. Sato, M. Okuno, and H. Takahashi
    Photonics Technology Letters, IEEE

International conferences and workshops375

20206
  • Highly spectrally efficient metro networks that adopt fiber-level granular routing on overlaid line-/ring-shaped virtual topologies
    Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    Metro and Data Center Optical Networks and Short-Reach Links III, part of SPIE OPTO, 2020
  • Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping
    Kazuya Okamura, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Metro and Data Center Optical Networks and Short-Reach Links III, part of SPIE OPTO, 2020.
  • Scalable and Fast Optical Circuit Switch Created with Silicon-Photonic Tunable-Filter-based Local Oscillator Bank and Colorless Coherent Detection
    Ryosuke Matsumoto, Takashi Inoue, Ryotaro Konoike, Hiroyuki Matsuura, Keijiro Suzuki, Yojiro Mori, Kazuhiro Ikeda, Shu Namiki, and Ken-ichi Sato
    Optical Fiber Communication Conference 2020 (OFC 2020), W2A.36, 8–12 March 2020, San Diego.
  • Design and Performance of Optical Switching Technologies for Data Center Networks
    Ken-ichi Sato
    Optical Fiber Communication Conference 2020 (OFC 2020), Workshop; Are Radical Photonic Devices and Architectures Needed for Future Data Centers?, 8–12 March 2020, San Diego.
  • High-Throughput Optical Circuit Switch for Intra-Datacenter Networks Based on Spatial Super-Channels
    Eiji Honda, Yojiro Mori1 Hiroshi Hasegawa, Ken-ichi Sato
    Optical Fiber Communication Conference 2020 (OFC 2020), W1F.2, 8–12 March 2020, San Diego.
  • Dynamically Controlled Flexible-Grid Networks Based on Semi-Flexible Spectrum Assignment and Network-State-Value Evaluation
    Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Optical Fiber Communication Conference 2020 (OFC 2020), M1B.4, 8–12 March 2020, San Diego.
201912
  • Novel Network Architecture Enabling Quasi-Nyquist Wavelength-Division Multiplexing
    Ryota Shiraki, Shuhei Yamaoka,Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Photonic West, San Francisco, January 2019.
  • Verification of High Performance and Wide Applicability of Seamlessly Expandable and Limitless OXC
    Ryota Hashimoto, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Optical Networking and Communication Conference & Exhibition, OFC 2019, W2A.24, San Diego, 4-7 March 2019.
  • Demonstration of Quasi-Nyquist WDM Networks Using Widely Deployed Wavelength-Selective Switches
    Ryota Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Optical Networking and Communication Conference & Exhibition, OFC 2019, M1.A7, San Diego, 4-7 March 2019.
  • Design and Resiliency Enhancement in Coarse/Fine Hybrid Granular Routing Optical Networks based on Iterative Path-Pair-Loop Inflation
    Keisuke Itakura, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    15th International Conference on the Design of Reliable Communication Networks (DRCN 2019), March 19-21, 2019, Coimbra, Portugal.
  • High-port-count optical cross-connect using single-module M×M wavelength-selective switches
    Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Ise, Japan, International Symposium EXAT 2019, May 29-31, 2019. (Invited)
  • Switching granularity and intra-node interconnection optimization for large scale optical nodes
    Hiroshi Hasegawa and Ken-ichi Sato
    OECC/PSC 2019, WA2-4 (invited)
  • Feasibility Test of Large-Scale (1,424×1,424) Optical Circuit Switches Utilizing Commercially Available Tunable Lasers
    Eiji Honda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    OECC/PSC, WA1-3, Jul 8, 2019
  • Evaluation of WSS Characteristics in Highly Dense WDM Networks
    Kazuya Okamura, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    OECC/PSC, MF2-5, Jul 8, 2019.
  • How optical-circuit/electrical-packet hybrid switching will create high performance and cost-effective data center networks (Invited)
    Ken-ichi Sato
    21st International Conference on Transparent Optical Networks (ICTON) 2019, Th.D1.4, Angers, France, 9-13 July, 2019.
  • Dynamic Control of Transparent Optical Networks with Adaptive State-Value Assessment Enabled by Reinforcement Learning
    Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    21st International Conference on Transparent Optical Networks (ICTON) 2019, Sa.A3.4, Angers, France, 9-13 July, 2019.
  • Intra- and inter-datacentre converged networks utilising Kramers-Kkronig receivers
    Eiji Honda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    45th European Conference on Optical Communication (ECOC 2019), Th1.A.5., Dublin, Ireland, September 22-26.
  • Role of Optical Technologies to Compensate the End of Moore's Law
    Ken-ichi Sato
    The 2rd World Symposium on Communication Engineering (WSCE 2019), December 18-20, 2019, Nagoya Institute of Technology, Nagoya. (Invited)
201816
  • Large-scale optical node architecture enabling spectral-efficiency maximization in ultra-dense WDM networks
    Shuhei Yamaoka, Ryota Hashimoto, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    SPIE OPTO, Photonics West, Optical Metro Networks and Short-Haul Systems X, paper 10560-15, San Francisco, January 27-February 1, 2018.
  • Demonstration of 153.6-Tbps Throughput from 1,536x1,536 Optical Switch with Uniform-Loss and Cyclic-Frequency AWGs
    Hiroki Nagai, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    SPIE OPTO, Optical Metro Networks and Short-Haul Systems X, Paper 10560-24, San Francisco, January 27-February 1, 2018. (SPIE Photonics West 2018, Optical Communications Best Paper Award)
  • Fragmentation-Minimized Transponder Upgrading Employing Channel Bandwidth Aligned Slot Allocation in Flexible Grid Optical Networks
    Hiroshi Hasegawa, Takuma Yasuda, Yojiro Mori, and Ken-ichi Sato
    OFC 2018, M3J.6, San Diego, March 11-15, 2018.
  • Next-Generation ROADM Employing Bandwidth-Adaptive Silicon-Photonic Filters for Flexible Drop Operation
    Yojiro Mori, Koh Ueda, Keijiro Suzuki, Hiroyuki Matsuura, Ken Tanizawa, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashiwa, and Ken-ichi Sato
    OFC 2018, Th3H.5, San Diego, March 11-15, 2018.
  • Large-Scale Optical Circuit Switch Architecture for Intra-Datacenter Networking
    Yojiro Mori and Ken-ichi Sato
    OFC 2018, Th3H.3, San Diego, March 11-15, 2018. (invited)
  • Spectrally Efficient and Highly Resilient Grouped Routing Network Enhanced with Optical Performance Monitoring
    Keisuke Kayano, Hiroshi Saito, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Shoichiro Oda, Setsuo Yoshida, and Takeshi Hoshida
    OFC 2018, M3J.8, San Diego, March 11-15, 2018.
  • Spectral Utilization Efficient Coarse Granular Routing Optical Networks with Resiliency against Multiple Failures
    Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    14th International Conference on Design of Reliable Communication Networks, DRCN 2018, Paris, February 19, 2018.
  • Assessment of Optical Cross-Connect Architectures for the Creation of Next Generation Optical Networks
    Mungun-Erdene Ganbold, Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    23rd OptoElectronics and Communications Conference (OECC2018), paper SC1_1037, Jeju, Korea, July 2 - 6, 2018.
  • 1,024x1,024 Optical Circuit Switch Using Wavelength-Tunable and Bandwidth-Variable Silicon Photonic Filter
    Mungun-Erdene Ganbold, Hiroki Nagai, Yojiro Mori, Keijiro Suzuki, Hiroyuki Matsuura, Ken Tanizawa, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, and Ken-ichi Sato
    Advanced Photonics 2018 Congress, NeTh1F.4, Zurich, Switzerland, 2-5 July 2018. (Best Student Paper for the OSA Advanced Photonics Congress 2018)
  • Novel Demodulation Algorithm Based on Duo-Binary Spectrum Shaping and MLSE for Mitigating Spectrum Narrowing Caused by Multiple Node Traversals
    Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Advanced Photonics 2018 Congress, SpW1G.5, Zurich, Switzerland, 2-5 July 2018.
  • Novel FM-Noise Spectrum Measurement Based on Three-Wave Interference
    Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    CLEO Pacific Rim 2018 Conference, Hong Kong, 29 July – 03 August, 2018.
  • Novel Demodulation Framework Based on Quadrature Duo-Binary/Quaternary/Octernary Spectrum Shaping and MLSE for Mitigating Spectrum Narrowing Impairment Caused by Node Traversals
    Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    44th European Conference on Optical Communication (ECOC 2018), Mo4F.5, Roma, Italy, September 23-27, 2018.
  • Fast Optical Circuit Switch Using Monolithically Integrated Silicon-Photonic Space Switch and Wavelength-Tuneable Filter
    Yojiro Mori, Mungun-Erdene Ganbold, Ryuta Shiraki, Keijiro Suzuki, Hiroyuki Matsuura, Hitoshi Kawashima, Shu Namiki, Kazuhiro Ikeda, and Ken-ichi Sato
    44th European Conference on Optical Communication (ECOC 2018), Mo3H.4, Roma, Italy, September 23-27, 2018.
  • Architecture and Design of Quasi-Nyquist WDM Networks with Flexible Grid Granular Switching
    Ryota Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    The International Conference on Photonics in Switching and Computing ? PSC, Paper Fr3A.5, Cyprus, 19-21 September 2018.
  • Role of optical circuit switching and realization technologies for datacenter applications
    Ken-ichi Sato
    The International Conference on Photonics in Switching and Computing, Fast Switching Workshop, Cyprus, 19 September 2018.
  • Ultra-Dense Elastic Optical Networks Enabled by Grouped Routing with Distance-Adaptive Modulation
    Keisuke Kayano, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Fumikazu Inuzuka, Akira hirano
    The International Conference on Photonics in Switching and Computing PSC, Paper Fr4B.2, Cyprus, 19-21 September 2018.
201716
  • Network expansion strategy for elastic optical networks that considers channel capacity upgrades
    Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    Photonic West, SPIE Proc. Vol. 10129, Optical Metro Networks and Short-Haul Systems IX, 1012909 (28 January 2017), San Francisco.
  • Impairment mitigation in non-coherent optical transmission enabled with machine learning for intra-datacenter networks
    Keisuke Ito, Masaki Niwa, Koh Ueda, Yojiro Mori, Hiroshi Hasegawa and Ken-ichi Sato
    Photonic West. Proc. SPIE 10131, Next-Generation Optical Networks for Data Centers and Short-Reach Links IV, 101310A (January 28, 2017), San Francisco.
  • Optical Tunable Filter for Gridless ROADM
    Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    OSA The Optical Fiber Communication Conference and Exhibition (OFC), Tu3F.4, Los Angeles, 19-23 March 2017.
  • Dynamic Control of Coarse/Fine Hybrid Granular Routing Optical Networks
    Yusaku Ito, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    OSA The Optical Fiber Communication Conference and Exhibition (OFC), Th4F.3, Los Angeles, 19-23 March 2017.
  • Highly Reliable Large-Scale Optical Cross-Connect Architecture Utilizing MxM Wavelength-Selective Switches
    Shuhei Yamakami, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    OSA The Optical Fiber Communication Conference and Exhibition (OFC), Th3K.5, Los Angeles, 19-23 March 2017.
  • Novel Intra- and Inter-Datacenter Converged Network Exploiting Space- and Wavelength-Dimensional Switches
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    OSA The Optical Fiber Communication Conference and Exhibition (OFC), M3K.2, Los Angeles, 19-23 March 2017.
  • Large-Scale Optical Circuit Switch Architecture for Intra-Datacentre Networking
    Yojiro Mori, Koh Ueda, Hiroshi Hasegawa, and Ken-ichi Sato
    Conference on Lasers and Electro-Optics/Europe, CLEO-EU, CI-5.3, 25-29 June 2017, Munich, Germany.
  • Novel laser-linewidth measurement based on three-wave interference using digital coherent receiver
    Shuhei Yamaoka, Yojiro Mori, Ken-ichi Sato
    Conference on Lasers and Electro-Optics/Europe, CLEO-EU, CI-6.2, 25-29 June 2017, Munich, Germany.
  • Silicon photonics C-band tunable filter for large-scale optical circuit switches
    Keijiro Suzuki, Ken Tanizawa,Satoshi Suda,Hiroyuki Matsuura, Kazuhiro Ikeda,Yojiro Mori, Ken-ichi Sato, Shu Namiki, and Hitoshi Kawashima
    OECC 2017, P3-128, Singapore, 31 July-4 August 2017. (CLEO-PR, OECC & PGC 2017), s1263.
  • Role of Grouped Routing in Creating Cost Effective and Bandwidth Abundant Networks
    K. Sato
    ICTON 2017, Th.A1.5, Girona, Spain, July 2-6, 2017.
  • Novel subcarrier multiplexing and subcarrier-synchronous phase estimation tolerant to laser phase noise
    David Martinez, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    OSA Advanced Photonics 2017 (IPR, NOMA, Sensors, Networks, SPPCom, PS), paper SpW1F.5, New Orleans, 24–27 July, 2017.
  • Theory and progress of large-scale optical switching and elastically-hybrid optical switching
    Hiroshi Hasegawa and Ken-ichi Sato
    OSA Advanced Photonics 2017, Photonics in Switching 2017, paper PM2D.1, New Orleans, 24-27 July 2017.
  • Realization and application of large-scale fast optical circuit switch for data center networking
    K. Sato
    43rd European Conference on Optical Communication, ECOC 2017, Tu2F.1, Gothenburg, Sweden, 17-21 September 2017.
  • Large scale switching devices and systems for datacenters
    K. Sato
    43rd European Conference on Optical Communication, ECOC 2017, WS 3: Data Center Networks: Meeting the emerging requirements for capacity, cost, energy consumption and reach, Gothenburg, Sweden, 17-21 September 2017.
  • First demonstration of subsystem-modular optical cross-connect using single-module 6x6 WSS
    Ryota Hashimoto, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Keita Yamaguchi, Kazunori Seno, Kenya Suzuki
    43rd European Conference on Optical Communication, ECOC 2017, Tu2F.2, Gothenburg, Sweden, 17-21 September 2017. (Highly ranked paper, shortlisted for student paper award, invited for JLT special issue)
  • Joint pre-, inline-, and post-compensation of spectrum narrowing caused by traversing cascaded multiple optical nodes
    Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    43rd European Conference on Optical Communication, ECOC 2017, P1.SC3.45, Gothenburg, Sweden, 17-21 September 2017.
201629
  • Architecture and design of optical path networks utilizing waveband virtual links
    Yusaku Ito, Y. Mori, H. Hasegawa, and K. Sato
    SPIE Photonics West OPTO 2016, Proc. SPIE Proceedings 9773, Optical Metro Networks and Short-Haul Systems VIII, 97730J, San Francisco, 13-18 February 2016.
  • Real-time optical path control method that utilizes multiple support vector machines for traffic prediction
    Hiroshi Kawase, Yojiro Moria, Hiroshi Hasegawaa, and Ken-ichi Sato
    SPIE Photonics West OPTO 2016, Proc. SPIE 9773, 977318, San Francisco, 13-18 February 2016.
  • Demonstration of 720x720 optical fast circuit switch for intra-datacenter networks
    K. Ueda, Y. Mori, H. Hasegawa, H. Matsuura, K. Ishii, H. Kuwatsuka, S. Namiki, and K. Sato
    SPIE Photonics West OPTO 2016, San Francisco, 13-18 February 2016, Proc. SPIE 9775, Next-Generation Optical Networks for Data Centers and Short-Reach Links III, 97750J (March 7, 2016); doi:10.1117/12.2211998.
  • Spectrum utilization maximization in coarse granularity optical routing networks that employ high granularity shared protection
    T. Ishikawa, Y. Mori, H. Hasegawa, and K. Sato
    IEEE 12th International Conference on Design of Reliable Communication Networks (DRCN), DRCN 2016, France, March 15-17, 2016.
  • Cycle-slip-tolerant decision-boundary creation with machine learning
    H. Kawase, Y. Mori, H. Hasegawa, and K. Sato
    2016 IEEE 6th International Conference on Photonics (ICP), Malaysia, March 14-16, 2016.
  • Low-Loss and Large-Scale Optical Switch Utilizing Asymmetric-Port-Count Cyclic AWGs
    K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and O. Moriwaki
    2016 IEEE 6th International Conference on Photonics (ICP), Malaysia, March 14-16, 2016. (Best paper award)
  • Highly spectral efficient elastic optical network employing grouped optical path routing
    Y. Terada, Y. Mori, H. Hasegawa, and K. Sato
    OFC/NFOEC 2016, Th1I.6, Anaheim, March 20-24, 2016.
  • Algorithm for raising OXC port count to meet traffic growth at minimum-cost
    Kosuke Sato, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    OFC/NFOEC 2016, W2A.48, Anaheim, March 20-24, 2016. Top rated systems/networking paper invited for the OSA/IEEE Journal of Optical Communications and Networking (JOCN).
  • Tipping point for the future scalable OXC -What size MxN WSS is needed?-
    Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    OFC/NFOEC 2016, W4B.5, Anaheim, March 20-24, 2016. Top rated systems/networking paper invited for the OSA/IEEE Journal of Optical Communications and Networking (JOCN).
  • A compact OXC node architecture that exploits dynamic path bundling and routing
    T. Ishikawa, H. Hasegawa, and K. Sato
    2016 International Conference on Optical Network Design and Modeling (ONDM) 2016, Cartagena, 9-12 May 2016, pp. 1-6.
  • Impact of node/fiber/WSS degrees in creating cost effective OXCs
    Ken-ichi Sato
    The 18th International Conference on Transparent Optical Networks ICTON 2016, Trento, Italy, Th.B1.6, July 10-14, 2016.
  • Hardware scale analysis and prototype development of flexible waveband routing OXCs
    Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, Suresh Subramaniam and Ken-ichi Sato
    OECC/PS 2016.
  • Spectral Efficient grouped routing network that applies dynamic optical path grooming
    Yuki Terada, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    OECC/PS 2016, Niigata, paper TuA1-1, July2016.
  • Polarization-independent C-band tunable filter based on cascaded Si-wire asymmetric Mach-Zehnder interferometer
    K. Suzuki, K. Tanizawa, S. Suda, H. Matsuura, K. Ikeda, Y. Mori, K. Sato, S. Namiki, and H. Kawashima
    in 21st Optoelectronics and Communications Conference/ International Conference on Photonics in Switching Proceedings (online), OECC/PS 2016, Niigata, 2016, paper ME1-2.
  • Demonstration of 1,440x1,440 fast optical circuit switch for datacenter networking
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, Shu Namiki, Toshio Watanabe, and Ken-ichi Sato
    OECC/PS 2016 (The 21st OptoElectronics and Communications Conference/International Conference on Photonics in Switching 2016), WF1-3, July 3-7, 2016, Niigata, Japan. (Best paper award)
  • Optical networking and node technologies for creating cost effective bandwidth abundant networks
    Ken-ichi Sato
    OECC/PS 2016 (The 21st OptoElectronics and Communications Conference/International Conference on Photonics in Switching 2016), ThA1-2, July 3-7, 2016, Niigata, Japan.
  • Recent progress in large-scale optical switches for intra-datacenter interconnection
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    2016 Progress in Electromagnetic Research Symposium (PIERS), Shanghai 8-11 Aug. 2016, pp. 2369- 2373.
  • How optical technologies can compensate the imminent demise of Moore's law?
    Ken-ichi Sato
    2016 IEEE 17th International Conference on High Performance Switching and Routing (HPSR 2016), Yokohama, June 14-17, 2016. (Keynote)
  • Large-scale optical circuit switch for intra-datacenter networking using silicon-photonic multicast switch and tunable filter
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Keijiro Suzuki, Hiroyuki Matsuura, Ken Tanizawa, Satoshi Suda, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Shigeru Nakamura, Shigeyuki Yanagimachi, Akio Tajima, and Ken-ichi Sato
    42nd European Conference and Exhibition on Optical Communication (ECOC 2016), W.2.F.2, Dusseldorf, September 18-22, 2016.
  • MxM WSS based ROADM architecture with topology-insensitive routing performance
    Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    42nd European Conference and Exhibition on Optical Communication (ECOC 2016), W.4.P1.SC4.7, Dusseldorf, September 18-22, 2016.
  • Optical networking utilizing virtual direct links
    Yusaku Ito, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    42nd European Conference and Exhibition on Optical Communication (ECOC 2016), W.4.P1.SC6.3, Dusseldorf, September 18-22, 2016.
  • Spectral-efficiency maximization with subcarrier-multiplexed hybrid-QAM signals adaptive to distance and hop count
    Yuma Isono, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato
    42nd European Conference and Exhibition on Optical Communication (ECOC 2016), Th.1.E.3, Dusseldorf, September 18-22, 2016.
  • Large-scale intra-datacenter switch using silicon-photonic multicast switches and tunable filters
    Yojiro Mori, Koh Ueda, Keijiro Suzuki, Hiroyuki Matsuura, Ken Tanizawa, Satoshi Suda, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Shigeru Nakamura, Shigeyuki Yanagimachi, Akio Tajima, and Ken-ichi Sato
    VICTORIES Symposium, Paper G-1, Akihabara, November 1, 2016.
  • Experimental demonstration of 2,160x2,160 optical circuit switch for intra-datacenter networking
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, Shu Namiki, and Ken-ichi Sato
    2016 Photonics Society Conference (IPC), MB4.2, Hawaii, October 2-6, 2016.
  • Highly reliable and cost effective large scale optical cross-connect architecture
    Shuhei Yamakami, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    2016 Photonics Society Conference (IPC), WD2.4, Hawaii, October 2-6, 2016.
  • Demonstration of Virtual Direct Link Optical Networks
    Yusaku Ito, Masaki Niwa, Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    2016 Photonics Society Conference (IPC), WD1.5, Hawaii, October 2-6, 2016.
  • Large-scale and simple-configuration optical switch enabled by asymmetric-port-count sub-switches
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, and Toshio Watanabe
    2016 Photonics Society Conference (IPC), the inverted conference submission, Hawaii, October 2-6, 2016.
  • Novel Optical-Node Architecture Utilizing Asymmetric-Multiport Wavelength-Selective Switches
    Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    2016 Photonics Society Conference (IPC), the inverted conference submission, Hawaii, October 2-6, 2016.
  • What are the keys to create flexible, scalable and cost-effective OXC/ROADM?
    Ken-ichi Sato
    Asia Communications and Photonics Conference (ACP 2016), Workshop 8: Towards Next Generation Optical Networks: Evolution and Challenges, Wuhan, China, November 2, 2016.
201529
  • Wavelength-tunable filter utilizing non-cyclic arrayed waveguide grating to create colorless/directionless/contentionless ROADMs
    Masaki Niwa, S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    Proc. SPIE 9388, Optical Metro Networks and Short-Haul Systems VII, 938807, part of SPIE OPTO, San Francisco, 7-12 February, 2015.
  • A novel optical path routing network that combines coarse granularity optical multicast with fine granularity add/drop & block
    Mauro M. Soares, H. Hasegawa, and K. Sato
    Proc. SPIE. 9388, Optical Metro Networks and Short-Haul Systems VII, 93880O, part of SPIE OPTO, San Francisco, 7-12 February, 2015.
  • Residual capacity aware dynamic control of GRE-based routing optical path networks under traffic growth model
    Y. Terada, Y. Mori, H. Hasegawa, and K. Sato
    OFC/NFOEC 2015, Th1I.6, Los Angeles, March 22-26, 2015.
  • Highly Scalable subsystem modular OXC nodes that host tailored add/drop mechanism
    H. Ishida, H. Hasegawa and K. Sato
    OFC/NFOEC 2015, Th2A.47, Los Angeles, March 22-26, 2015.
  • A novel routing and frequency slot assignment scheme that can adapt to transmission speed migration
    Z. Shen, H. Hasegawa, and K. Sato
    OFC/NFOEC 2015, W1I.2, Los Angeles, March 22-26, 2015.
  • Large-scale optical-switch prototype compactly implemented with novel functional configuration
    K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    OFC/NFOEC 2015, W3D.1, Los Angeles, March 22-26, 2015. (top scored)
  • Demonstration of large-port-count and compact ROADM that exhibits virtual-C/D/C performance
    S. Takashina, H. Ishida, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    OFC/NFOEC 2015, W3J.6, Los Angeles, March 22-26, 2015.
  • Large scale optical cross-connect: architecture, performance analysis, and feasibility demonstration
    H. Hasegawa and K. Sato
    OFC/NFOEC 2015, W3J.1, Los Angeles, March 22-26, 2015.
  • Resilient grouped routing optical networks that adopt fine granular protection
    H. Hasegawa, Y. Mori, and K. Sato
    19th International Conference on Optical Networks Design & Modeling, ONDM 2015, We7.3P, Pisa, Italy, May11-14, 2015.
  • Flexible waveband routing optical networks
    H. Hasegawa, Suresh Subramaniam, and K. Sato
    IEEE International Conference on Communications, ICC 2015, London, June 8-12, 2015, pp. 6816-6821.
  • Router power reduction by active performance control realized with support vector machines
    Hiroshi Kawase, Hiroshi Hasegawa, and Ken-ichi Sato
    ICNC'15, February 16-19, 2015 Anaheim.
  • Estimation of energy consumption of data communication network in Japan
    Kiyo Ishii, Junya Kurumida, Ken-ichi Sato, Tomohiro Kudoh, and Shu Namiki
    the 7th International Symposium on Ultrafast Photonic Technologies (ISUPT 2015), Extremely Advanced Transmission Technology (ISUPT/EXAT 2015), P-4, Kyoto, July 13-15.
  • Performance evaluation of subsystem modular OXCs with different subsystem connection configurations
    Y. Tanaka, H. Hasegawa, and K. Sato
    The 20th OptoElectronics and Communications Conference (OECC 2015), PWe.05, Shanghai, June 28th - July 2nd, 2015.
  • Path Accommodation Design and Reconfiguration for Different Reliable Classes in Virtualized Multi-layer Transport Network
    A. Kadohata, T. Tanaka, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato
    The 20th OptoElectronics and Communications Conference (OECC 2015), JTuB.24, Shanghai, June 28th - July 2nd, 2015.
  • Experimental demonstration of multi-granular optical-path network that utilizes wavelength/waveband-selective switches
    K. Ueda, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, T. Miyazawa, and H. Harai
    The 20th OptoElectronics and Communications Conference (OECC 2015), JThB.15, Shanghai, June 28th - July 2nd, 2015.
  • Key technologies to expand optical networking capabilities
    K. Sato
    The International Conference on Transparent Optical Networks, ICTON 2015, We.D.3.2, Hungary, 5-9 July, 2015.
  • Wavelength path signalling for WSS/WBSS combined optical switches in hierarchical optical networks
    Takaya Miyazawa, Takahiro Hirayama, Hiroaki Harai, Koh Ueda, Yojiro Mori, Hiroshi Hasegawa and Ken-ichi Sato
    The International Conference on Transparent Optical Networks, ICTON 2015, Tu.B.3.5, Hungary, 5-9 July, 2015.
  • Photonic networking technologies for inter- and intra- data centers
    K. Sato
    Majorca at MIT Workshop, July 27-29, 2015, MIT, Cambridge.
  • Shared protected grouped optical path routing network design employing iterative path group relocation
    T. Ishikawa, H. Hasegawa, and K. Sato
    2015 7th International Workshop on Reliable Networks Design and Modeling (RNDM), 5-7 Oct. 2015, Munich, Germany, pp. 78 ? 84.
  • Large-Scale Optical Switch with Simplified Sub-Switch Connections for Datacenter Application
    Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Toshio Watanabe
    Photonics in Switching, FrIII2-2, Florence, September 22-25, 2015.
  • Evaluation of Frequency Utilization Enhancement with Transmission-Characteristics-Aware Grouped Optical Path Routing
    Yuki Terada, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Takafumi Tanaka
    Photonics in Switching, SC4-2, Florence, September 22-25, 2015.
  • Cost Effective and Resilient Optical Network that Offers Seamless Network Expansion via Subsystem Modular OXCs and Inter-node Interconnection Optimization
    Kosuke Sato, Hiroshi Hasegawa, and Ken-ichi Sato
    Photonics in Switching, WeIII3-3, Florence, September 22-25, 2015.
  • Large Port Count Optical Switch Systems for Future Datacenters
    Ken-ich Sato
    Photonics in Switching, FrII2-1, Florence, September 22-25, 2015.
  • Impairment-aware Optical Multicast Tree Design with Modulation Format Optimization
    Soubhik Deb, Hiroshi Hasegawa, Yojiro Mori, Ken-ichi Sato
    Photonics in Switching, SC4-1, Florence, September 22-25, 2015.
  • Highly Scalable and Compact ROADM Architecture that Exploits MxN Wavelength Selective Switches
    Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato
    Photonics in Switching, WeII3-2, Florence, September 22-25, 2015.
  • Novel network control scheme that can substantially reduce link and node costs simultaneously
    Yuki Terada, Y. Mori, H. Hasegawa, and K. Sato
    The 41st European Conference on Optical Communication (ECOC 2015), Valencia, September 27th - October 1st, 2015. Paper ****.
  • Energy consumption of data communication network in Japan estimated with top-down and bottom-up approach
    Kiyo Ishii, Junya Kurumida, Ken-ichi Sato, Tomohiro Kudoh, and Shu Namiki
    International Symposium on VICTORIES 2015, Akihabara, November 10.
  • Development of large capacity future optical networks
    K. Sato
    10th International Workshop on Optical Signal Processing and Optical Switching, IWOO 2015, Beijing, China, November 15-17, 2015.
  • How Can Optical Technologies Compensate the Imminent Demise of Moore’s Law?
    K. Sato
    2015 IEIE Fall Conference, November 27-28, 2015, Oak Valley, Wonju-si, Korea, (Keynote).
201424
  • Performance evaluations of large-scale OXC that achieves modular and hitless expansion
    Y. Tanaka, H. Hasegawa, and K. Sato
    OFC/NFOEC 2014, W2A.50, San Francisco, March 9-14, 2014.
  • Low crosstalk wavelength tunable filter that utilizes symmetric and asymmetric Mach-Zehnder interferometers
    S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    OFC/NFOEC 2014, Th3F.6, San Francisco, March 9-14, 2014.
  • A 204.8 Tbps throughput 64x64 optical cross-connect prototype that allows C/D/C add/drop
    K. Takaha, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    OFC/NFOEC 2014, M2K.1, San Francisco, March 9-14, 2014. (Top Scored)
  • Enhancement of fiber frequency utilization by employing grouped optical path routing
    Y. Terada, Y. Mori, H. Hasegawa, and K. Sato
    OFC/NFOEC 2014, W1C.6, San Francisco, March 9-14, 2014.
  • Hardware scale and performance evaluation of compact OXC add/drop architecture
    H. Ishida, H. Hasegawa and K. Sato
    OFC/NFOEC 2014, W1C.7, San Francisco, March 9-14, 2014.
  • Fiber-nonlinearity limitation of transmission distances in ultra-dense gridless photonic networks
    Y. Mori, H. Hasegawa, and K. Sato
    OFC/NFOEC 2014, W2A.33, San Francisco, March 9-14, 2014.
  • Photonic networks that exploit digital coherent technologies
    Y. Mori and K. Sato
    Photonics West, paper 9008-1, San Francisco, February 1-6, 2014. (invited)
  • A novel flexible grid/semi-flexible grid optical path network design algorithm that reserves exclusive frequency slots for high bitrate signals
    Z. Shen, H. Hasegawa, and K. Sato
    IEEE Optical Network Design and Modelling conference, ONDM 2014, Stockholm, May 19-22, 2014, pp. 287-292.
  • Design of Grouped routing entity (GRE)-based optical networks with 100% signal quality guarantee
    A. Jirattigalachote, P. Monti, L. Wosinska, Y. Taniguchi, T. Ban, H. Hasegawa, and K. Sato
    IEEE Optical Network Design and Moedling conference, ONDM 2014, Stockholm, May 19-22, 2014, pp. 174-179.
  • Implication of inter-node and intra-node contention in creating large throughput photonic networks
    K. Sato
    IEEE Optical Network Design and Modeling conference, ONDM 2014, Stockholm, May 19-22, 2014, pp. 144-149. (invited).
  • Blocking performance of multi-stage routing optical path networks
    L. H. Chau, H. Hasegawa and K. Sato
    19th OptoElectronics and Communication Conference and the 39th Australian Conference on Optical Fibre Technology (ACOFT), OECC/ACOFT 2014, TU6A-6, July 6-9, Melbourne, Australia, 2014.
  • Design of reliable optical path networks that consist of large scale subsystem-modular OXC nodes
    Kousuke Sato, Hiroshi. Hasegawa and Ken-ichi. Sato
    OptoElectronics and Communication Conference, OECC/AOTF 2014, July 6-9, Melbourne, Australia, 2014.
  • How to create large scale OXCs/ROADMs for future networks
    K. Sato
    16th International Conference on Transparent Optical Networks, ICTON 2014, We.B1.4, Graz, Austria, July 6-10, 2014. (invited).
  • Disruption minimized spectrum defragmentation and equalization of bitrate dependent blocking in semi-flexible grid networks
    Z. Shen, H. Hasegawa, and K. Sato
    Photonics in Switching 2014, PS 2014, PW1B.2, San Diego, 13-17 July 2014.
  • Dynamic control of optical path networks by utilizing adaptive wavelength grouping and link fiber selection
    K. Oka, H. Hasegawa, and K. Sato
    Photonics in Switching 2014, PS 2014, San Diego, 13-17 July 2014.
  • Optimum power-budget allocation for large-scale optical switches utilizing cyclic arrayed waveguide gratings
    K. Ueda, Y. Mori, H. Hasegawa, and K. Sato
    Photonics in Switching 2014, PS 2014, San Diego, 13-17 July 2014.
  • Low-loss and low-power-consumption wavelength tunable filter enabling Colorless/Directionless/Contentionless optical drop in ROADMs
    S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    ECOC 2014, We.3.5.2, Cannes, September 21-25, 2014.
  • Novel large-port-count optical-switch architecture for optical interconnection in datacenter
    K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe
    ECOC 2014, We.3.5.1, Cannes, September 21-25, 2014.
  • Verification of high frequency spectrum utilization in grouped optical path routing networks under traffic growth scenario
    Y. Terada, Y. Mori, H. Hasegawa, and K. Sato
    ECOC 2014, Mo.3.1.4, Cannes, September 21-25, 2014.
  • First demonstration of ultra-low-energy hierarchical multi-granular optical path network dynamically controlled through NSI-CS for video related applications
    J. Kurumida, K. Ishii, A. Takefusa, Y. Tanimura, S. Yanagimachi, H. Takeshita, A. Tajima, K. Fukuchi, H. Honma, W. Odashima, H. Onaka, K. Tanizawa, K. Suzuki, S. Suda, K. Ikeda, H. Kawashima, H. Uetsuka, H. Matsuura, H. Kuwatsuka, K. Sato, T. Kudoh, S. Namiki
    ECOC 2014, PD.1.3, Cannes, September 21-25, 2014.
  • A novel semi-flexible grid network utilizing aligned frequency slot assignment
    Zhi-shu Shen, Hiroshi Hasegawa, and Ken-ichi Sato
    The 7th International Symposium on VICTORIES Project & Workshop, WIN2 2014, Poster, P-4, Tsukuba, Ibaraki, October 8-10, 2014.
  • Cost effective and reliable networking that utilizes subsystem modular OXC nodes
    Kosuke Sato, Hiroshi Hasegawa, and Ken-ichi Sato
    The 7th International Symposium on VICTORIES Project & Workshop, WIN2 2014, Poster, P-3, Tsukuba, Ibaraki, October 8-10, 2014.
  • Role of optical switches in networks and datacenters
    Ken-ichi Sato
    The 7th International Symposium on VICTORIES Project & Workshop, WIN2 2014, Tsukuba, Ibaraki, October 8-10, 2014. (invited).
  • Large-scale optical switch architectures for intra-datacenter networks
    Ken-ichi Sato
    Asia Communications and Photonics Conference, ACP 2014, Workshop 7: Optical Datacentre Networks, Session 2, Shanghai, China, Nov. 11-14, 2014. (invited)
201317
  • Impact of wavelength/waveband convertors and the cost bound in hierarchical optical path networks
    Z. Shen, H. Hasegawa, and K. Sato
    OFC/NFOEC 2013, OM3A.5, Anaheim, March 17-21, 2013.
  • OXC hardware scale reduction attained by using interconnected subsystem architecture
    Y. Iwai, H. Hasegawa, and K. Sato
    OFC/NFOEC 2013, NW1J.2, Anaheim, March 17-21, 2013. (Selected as a semi-finalist in the 2013 Corning Outstanding Student Paper Competition)
  • Dynamic grouped routing optical networks for cost effective and agile wavelength services
    Y. Taniguchi, H. Hasegawa, and K. Sato
    OFC/NFOEC 2013, OM3A.5, Anaheim, March 17-21, 2013.
  • A 270 x 270 optical cross-connect switch utilizing wavelength routing with cascaded AWGs
    T. Niwa, H. Hasegawa, and K. Sato
    OFC/NFOEC 2013, OTh1A.3, Anaheim, March 17-21, 2013. (Selected as a semi-finalist in the 2013 Corning Outstanding Student Paper Competition).
  • Compact integrated tunable filter utilizing AWG routing function and small switches
    T. Niwa, H. Hasegawa, K. Sato, T. Watanabe, H. Takahashi, and S. Soma
    OFC/NFOEC 2013, OW1C.2, Anaheim, March 17-21, 2013.
  • Design strategies for survivable Grouped Routing Entity (GRE)-based optical networks
    H. Hasegawa, Y. Taniguchi, K. Sato, A. Jirattigalachote, P. Monti, L. Wosinska
    9th International Conference on the Design of Reliable Communication Networks (DRCN 2013), Budapest, Hungary, 4-7 March 2013, pp. 148 - 154.
  • Performance evaluation of large-scale OXC architectures that utilize intra-node routing restriction
    L. H. Chau, H. Hasegawa and K. Sato
    OECC/PS 2013, MQ2-2, Kyoto, June 30-July 4, 2013. (Best paper award)
  • Evaluation of hardware requirements for large-scale OXC architecture employing wavelength switching and fiber selection
    T. Ban, L. H. Chau, H. Hasegawa and K. Sato
    PS/OECC 2013, WT2-2, Kyoto, June 30-July 4, 2013.
  • Development of ultra-compact 8x8 waveband cross-connect sub-system
    K. Takaha, T. Ban, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno
    PS/OECC 2013, WT2-3, Kyoto, June 30-July 4, 2013.
  • Challenges and opportunities of photonic networking technologies
    K. Sato
    The 18th OptoElectronics and Communications Conference/Photonics in Switching 2013, PS/OECC 2013, WQ1-1, Kyoto, June 30-July 4, 2013. (invited)
  • Performance evaluations of large-scale OXCs that utilize multi-stage hetero-granular optical path switching
    L. H. Chau, H. Hasegawa and K. Sato
    ECOC 2013, Th.2.E.3, London, September 22-16, 2013.
  • A novel semi-flexible grid optical path network that utilizes aligned frequency slot arrangement
    Z. Shen, H. Hasegawa, K. Sato, T. Tanaka, and A. Hirano
    ECOC 2013, We.2.E.2, London, September 22-16, 2013. (Shortlisted for Student paper prize, Invited for Optics Express ECOC special issue)
  • Subsystem modular OXC architecture that achieves disruption free port count expansion
    Y. Tanaka, Y. Iwai, H. Hasegawa, and K. Sato
    ECOC 2013, Th.2.E.4, London, September 22-16, 2013.
  • Unified approach of top-down and bottom-up methods for estimating network energy consumption
    K. Ishii, F. Okazaki, J. Kurumida, K. Mizutani, H. Takeshita, K. Kobayashi, D. Mochinaga, S. Namiki, K. Sato, and T. Kudoh
    ECOC 2013, P.5.6, London, September 22-16, 2013.
  • An efficient add/drop architecture for large-scale subsystem-modular OXC
    H. Ishida, H. Hasegawa and K. Sato
    15th International Conference on Transparent Optical Networks, ICTON 2013, We.A1.5, Cartagena, Spain, June 23-27, 2013.
  • Prospects and development of large capacity future optical transport node
    K. Sato
    15th International Conference on Transparent Optical Networks, ICTON 2013, Tu.A1.1, Cartagena, Spain, June 23-27, 2013. (Invited)
  • A Comparison of large-scale selective switch-based optical cross-connects
    L. H. Chau, H. Hasegawa and K. Sato
    2013 International Conference on Advanced Technologies for Communications (ATC 2013), October 16-18, Ho Chi Minh, Vietnam, 2013, pp. 55-59.
201232
  • A novel optical networking scheme utilizing coarse granular optical routing and fine granular add/drop
    Y. Taniguchi, Y. Yamada, H. Hasegawa, and K. Sato
    OFC/NFOEC 2012, JW2A.2, Los Angeles, March 4-8, 2012.
  • Colorless/Directionless/Contentionless optical add/drop architecture applying waveband technologies and colorless MUX/DEMUX
    Y. Yamada, R. Hirako, H. Hasegawa, and K. Sato
    OFC/NFOEC 2012, JTh2A.44, Los Angeles, March 4-8, 2012.
  • Evaluations of different optical path add/drop ratio restriction schemes on oxc hardware scale and network resource requirement
    F. Naruse, Y. Yamada, H. Hasegawa, and K. Sato
    OFC/NFOEC 2012, OTh1A.5, Los Angeles, March 4-8, 2012.
  • Compact Wavelength Tunable Filter Fabricated on a PLC Chip that Realizes Colorless/Directionless/Contentionless Drop Function in Optical Cross-Connect
    T. Niwa, R. Hirako, H. Hasegawa, K. Sato, M. Okuno, and T. Watanabe
    OFC/NFOEC 2012, OTh3D.6, Los Angeles, March 4-8, 2012.
  • Impairment-Aware Routing and Waveband Assignment for Efficient Optical Transport Networks
    A. Jirattigalachote, Y. Yamada, C. Cavdar, P. Monti, L. Wosinska, H. Hasegawa, and K. Sato
    OFC/NFOEC 2012, OWA3.2, Los Angeles, March 4-8, 2012.
  • Advances in optical networking technologies to create bandwidth abundant networks
    K. Sato
    WOCC 2012 (2012 21st Annual Wireless and Optical Communications Conference), Kaohsiung, Taiwan, April 19-21, 2012. (invited)
  • Optical technologies that create future green networks
    K. Sato
    WIN2012 (What-Is-Next), a closed workshop of the AIST’s Vertically Integrated Center for Technologies of Optical Routing toward Ideal Energy Savings (VICTORIES project), p. 4, Inuyama, Aichi, June 28-29, 2012. (invited)
  • Perfirmance of novel network that utilizes grouped optical path routing and fine granular add/drop
    Y. Taniguti, Y. Yamada, H. Hasegawa, and K. Sato
    WIN2012 (What-Is-Next), a closed workshop of the AIST’s Vertically Integrated Center for Technologies of Optical Routing toward Ideal Energy Savings (VICTORIES project), Poster, Inuyama, Aichi, June 28-29, 2012.
  • Hierarchical optical path networks utilizing elecgtrical grooming and regeneration of wavelength paths
    L. H. Chau, H. Hasegawa and K. Sato
    WIN2012 (What-Is-Next), a closed workshop of the AIST’s Vertically Integrated Center for Technologies of Optical Routing toward Ideal Energy Savings (VICTORIES project), p. 4, Inuyama, Aichi, June 28-29, 2012.
  • Design of bandwidth abundant photonic networks that utilize flexible/multi-granular optical path routing
    H. Hasegawa and K. Sato
    OECC 2012, 2012 17th Opto-Electronics and Communications Conference, 3A2-5, Busan, Korea, July 2-5, 2012. (invited)
  • Optical technologies for future networks
    K. Sato
    OECC 2012, 2012 17th Opto-Electronics and Communications Conference, Busan, Korea, 5A2-1, July 2-6, 2012. (invited)
  • Role of electronics and optics in creating future transport networks
    K. Sato
    14th International Conference on Transparent Optical Networks, ICTON 2012, Mo.C1.2, Warwick, U.K., July 2-5, 2012. (invited)
  • Impact of optical transparent reach on the performance of translucent multi-granular optical path networks
    L. H. Chau, H. Hasegawa and K. Sato
    Proceedings of Fourth International Conference on Communications and Electronics (ICCE 2012), Vietnam, pp. 1-6, August 1-3, 2012.
  • Performance evaluation of optical path networks utilizing waveband selective switch-based cross-connects
    L. H. Chau, Tien-Ban Nguyen, H. Hasegawa and K. Sato
    5th International Conference on Advanced Technologies for Communications (ATC 2012), 10-12 October, 2012, Hanoi, Vietnam.
  • Effectiveness of waveband conversion for hierarchical optical path networks and the allowable cost bound
    Z. Shen, H. Hasegawa, and K. Sato
    Photonics in Switching 2012 (PS 2012), Th-S34-O10, Corsica, September 11-14, 2012.
  • Hardware scale reduction in large-port count OXCs exploiting selective switch based coarse granular routing
    Y. Taniguchi, Y. Yamada, H. Hasegawa, and K. Sato
    Photonics in Switching 2012 (PS 2012), We-S31-O03, Corsica, September 11-14, 2012.
  • Compact tunable filter realized with combination of wavelength routing and switch function
    T. Niwa, H. Hasegawa, and K. Sato
    Photonics in Switching 2012 (PS 2012), Th-S23-O06, Corsica, September 11-14, 2012.
  • A Large Capacity Optical Cross-connect Architecture Exploiting Multi-Granular Optical Path Routing
    L. H. Chau, H. Hasegawa and K. Sato
    Photonics in Switching 2012 (PS 2012), Fr-S26-O14, Corsica, September 11-14, 2012.
  • Impairment-aware multicast tree design for hierarchical optical path networks
    Y. Hachisuka, H. Hasegawa, and K. Sato
    Photonics in Switching 2012 (PS 2012), Th-S33-O08, Corsica, September 11-14, 2012.
  • Optical transport network architecture; the future transport node technologies
    K. Sato
    Photonics in Switching 2012 (PS 2012), Th-S33-I04, Corsica, September 11-14, 2012. (invited)
  • Photonic technologies that create future green networks
    K. Sato
    A Telecom & Energy Forum, Photonics in Switching 2012 (PS 2012), Corsica, September 13, 2012. (invited)
  • A novel large-scale OXC architecture that employs wavelength path switching and fiber selection
    T. Ban, H. Hasegawa, K. Sato, T. Watanabe, and H. Takahashi
    ECOC 2012, We.3.D.1, Amsterdam, September 16-20, 2012.
  • Large-scale photonic node architecture that utilizes interconnected small scale optical cross-connect sub-systems
    Y. Iwai, H. Hasegawa, and K. Sato
    ECOC 2012, We.3.D.3, Amsterdam, September 16-20, 2012.
  • Shared protected elastic optical path network design that applies iterative re-optimization based on resource utilization efficiency measures
    S. Kosaka, H. Hasegawa, K. Sato, Y. Tanaka, A. Hirano, and M. Jinno
    ECOC 2012, Tu.4.D.5, Amsterdam, September 16-20, 2012.
  • Benefits of Elastic (Flexible) Optical Networks
    K. Sato
    ECOC 2012 Workshop on Cognitive and Flexible Optical Networks, Amsterdam, September 16, 2012. (invited)
  • Efficient routing strategies for interconnected small scale OXC sub-system networks
    Y. Iwai, H. Hasegawa, and K. Sato
    ACP 2012, ATh2D.2, Guangzhou (Canton), China, November 7-10, 2012.
  • Performance evaluation of large-scale OXC architecture employing wavelength path switching and fiber selection
    T. Ban, H. Hasegawa, and K. Sato
    ACP 2012, ATh2D.4, Guangzhou (Canton), China, November 7-10, 2012.
  • Formulation of MUX/DEMUX functions for multiple input-output port cyclic AWG
    K. Ishii, H. Hasegawa, and K. Sato
    ACP 2012, AS4A.3, Guangzhou (Canton), China, November 7-10, 2012.
  • A novel large-scale wavelength routing switch configuration exploiting small arrayed waveguide gratings
    T. Niwa, H. Hasegawa, K. Sato, T. Watanabe, and H. Takahashi
    ACP 2012, ATh2C.4, Guangzhou (Canton), China, November 7-10, 2012.
  • Quasi-scheduled optical path routing and wavelength assignment that uses expected traffic variation
    N. Osawa, H. Hasegawa, and K. Sato
    ACP 2012, AS2D.4, Guangzhou (Canton), China, November 7-10, 2012.
  • Design of optical path networks employing large-capacity WSS/WBSS-Combined optical cross-connects
    L. H. Chau, H. Hasegawa and K. Sato
    ACP 2012, AF4A.49, Guangzhou (Canton), China, November 7-10, 2012.
  • Photonic technologies for creating energy efficient networks
    K. Sato
    ACP 2012 Workshop, “Energy Efficient Optical Communications and Networking,” Guangzhou (Canton), China, November 7-10, 2012. (invited)
201125
  • PCE-based scalable dynamic path control for large-scale photonic networks
    S. Araki, K. Shimada, H. Hasegawa, K. Sato, Y. Iizawa, S. Ishida, I. Nishioka
    SPIE Photonics West 2011, Conference 7959: Optical Metro Networks and Short-Haul Systems III, Paper 7959-17, January 27, 2011.)
  • OOO switching – The role and technological advances
    K. Sato
    OFC/NFOEC 2011, NThB1, Los Angeles, March 6-10, 2011 (invited).
  • Hybrid optical wdm networks utilizing optical waveband and electrical wavelength cross-connect
    L. H. Chau, H. Hasegawa and K. Sato
    OFC/NFOEC 2011, NMC3, Los Angeles, March 6-10, 2011.
  • PLC-based compact optical cross-connect node for ROADM ring network connection
    K. Noguchi, O. Moriwaki, H. Takahashi, T. Sakamoto, M. Okuno, and K. Sato
    OFC/NFOEC 2011, NThB2, Los Angeles, March 6-10, 2011.
  • Novel hierarchical optical cross-connect architecture utilizing dedicated add/drop switches that effectively offer colorless and directionless capability
    Y. Yamada, H. Hasegawa, and K. Sato
    OFC/NFOEC 2011, OThR6, Los Angeles, March 6-10, 2011.
  • Dynamic routing and frequency slot assignment for elastic optical path networks that adopt distance adaptive modulation
    T. Takagi, H. Hasegawa, K. Sato, Y. Sone, B. Kozicki, A. Hirano, and M. Jinno
    OFC/NFOEC 2011, OTuI7, Los Angeles, March 6-10, 2011.
  • Optical network design algorithms that consider optical path add/drop ratio restrictions for OXC hardware scale reduction
    F. Naruse, Y. Yamada, H. Hasegawa, and K. Sato
    OFC/NFOEC 2011, NThC3, Los Angeles, March 6-10, 2011.
  • Flexible and compact hierarchical optical cross-connect node with waveband add/drop restriction
    R. Hirako, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno
    OFC/NFOEC 2011, OTuE5, Los Angeles, March 6-10, 2011.
  • Role of optics in creating future transport networks
    K. Sato
    13th International Conference on Transparent Optical Networks, ICTON 2011, Stockholm, June 27-30, 2011 (invited).
  • Photonic network technologies for the cloud era
    K. Sato
    16th Opto-Electronics and Communications Conference, OECC 2011, Workshop I, What photonic technology will play the leading role in the upcoming cloud era?, Kaohsiung, Taiwan, July 4-8 2011. (invited)
  • Development of large capacity ultra-compact waveband cross-connect
    T. Ban, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno
    16th Opto-Electronics and Communications Conference, OECC 2011, 6A1-2, Kaohsiung, Taiwan, July 4-8 2011.
  • Development of single plc-chip waveband selective switch that has extra ports for grooming and termination
    R. Hirako, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno
    16th Opto-Electronics and Communications Conference, OECC 2011, 7E1-4, Kaohsiung, Taiwan, July 4-8 2011.
  • Recent developments in and challenges of elastic optical path networking
    K. Sato
    ECOC 2011 - 37th European Conference and Exhibition on Optical Communication, Mo.2.K.1, Geneva, September 18-22, 2011. (invited)
  • Impact of electrical grooming and regeneration of wavelength paths in creating hierarchical optical path networks
    L. H. Chau, H. Hasegawa and K. Sato
    ECOC 2011 - 37th European Conference and Exhibition on Optical Communication, We.8.K.2, Geneva, September 18-22, 2011.
  • Compact hierarchical optical cross-connect utilizing newly designed waveband selective switch with extra ports for grooming
    R. Hirako, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno
    ECOC 2011 - 37th European Conference and Exhibition on Optical Communication, Th.12.A.4, Geneva, September 18-22, 2011.
  • Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation
    T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno
    ECOC 2011 - 37th European Conference and Exhibition on Optical Communication, Mo.2.K.3, Geneva, September 18-22, 2011.
  • A dynamic path control method applying traffic-prediction-based route pre-prioritization
    H. Ohno, H. Hasegawa, K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), 8310-06, Shanghai, November 13-16, 2011.
  • Design of hierarchical optical path networks that utilize wavelength conversion and evaluation of the allowable cost bound
    Z. Shen, H. Hasegawa, and K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), 8310-06, Shanghai, November 13-16, 2011. (NEDO) (Best Student Paper Award)
  • Design algorithm of waveband multicast tree in hierarchical optical path networks that utilizes grouping of destination node sets
    Y. Hachisuka, H. Hasegawa, and K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), 8310-02, Shanghai, November 13-16, 2011.
  • Multi-domain path control system for large-scale photonic networks
    S. Araki, H. Hasegawa, and K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), 8310-34, Shanghai, November 13-16, 2011.
  • The path to fully flexible optical network
    K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), 8309-62, Shanghai, November 13-16, 2011. (invited)
  • The role of multi-granular optical paths
    K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), 8310-01, Shanghai, November 13-16, 2011. (invited)
  • Role of optical technologies to create future transport networks
    K. Sato
    ACP 2011 (Asia Communications and Photonics Conference and Exhibition 2011), Workshop WK1: Spectrum- and Energy- Efficient Optical Transport Networks, Shanghai, November 13-16, 2011. (invited)
  • Efficient iterative design algorithm for enhancing resource utilization of shared protected optical path networks
    M. Sato, H. Hasegawa and K. Sato
    Proc. of the 2011 8th International Workshop on the Design of Reliable Communication Networks (DRCN), Krakow, Poland, October 10-12, 2011pp. 102-109.
  • Coarse granular routing optical networks for future optical services
    H. Hasegawa and K. Sato
    Proceedings of IWOO2011 (6th International Workshop on OPS & OCDMA), p.24, Dec.12-13, 2011, Okinawa, Japan. (invited).
201025
  • Impacts of waveband capacity and waveband add/drop ratio on the performance of ROADM-Ring connecting hierarchical optical path cross-connects
    K. Ishii, H. Hasegawa, K. Sato
    OFC/NFOEC 2010, NMD1, San Diego, March 21-25, 2010.
  • Adaptive self-reconfigurable network to create cost-effective bandwidth-on-demand services
    M. Nakagawa, H. Hasegawa, K. Sato, T. Takeda, and K. Shiomoto
    OFC/NFOEC 2010, NWA2, San Diego, March 21-25, 2010.
  • Demonstration of compact hierarchical optical path cross-connect utilizing wavelength/waveband selective switches
    S. Mitsui, H. Hasegawa and K. Sato, S. Kamei, H. Takahashi, and M. Okuno
    OFC/NFOEC 2010, NThF4, San Diego, March 21-25, 2010.
  • Role and opportunities of photonics in future networks
    K. Sato
    IEEE Photonics Society Winter Topicals 2010, Keynote, MC1.1, Majorca, Spain, January 11-13, 2010. (Invited)
  • Next Generation Transport Network Architecture
    K. Sato
    OFC/NFOEC 2010, invited, OWR1, San Diego, March 21-25, 2010.
  • Are all optical network manageable?
    K. Sato
    OFC/NFOEC 2010, Workshop OMF, invited, San Diego, March 22, 2010.
  • Terabit-scale compact hierarchical optical cross-connect system employing PLC devices and optical backplane
    O. Moriwaki, K. Noguchi, H. Takahashi, T. Sakamoto, K. Sato, H. Hasegawa, M. Okuno, and Y. Ohmori
    OFC/NFOEC 2010, Post Deadline Paper, PDPC9, San Diego, March 25, 2010.
  • Multi-granularity waveband- and wavelength- path network
    K. Sato
    CLEO 2010, Conference on Lasers and Electro-Optics, CFJ1, San Hose, May16-21, 2010. (Invited)
  • Optical fast circuit switching networks applying waveband grooming
    T. Ogawa, Y. Yamada, H. Hasegawa, K. Sato
    COIN 2010 (9th International Conference on Optical Internet), July 11-14, 2010, Jeju, Korea.
  • A dynamic routing algorithm for multi-domain photonic networks using maximum flow information between domain boundaries
    K. Shimada, S. Araki, H. Hasegawa, and K. Sato
    COIN 2010 (9th International Conference on Optical Internet), July 11-14, 2010, Jeju, Korea.
  • Performance test of ultra-compact waveband cross-connect module
    K. Ishii, H. Hasegawa, K. Sato, M. Okuno, and H. Takahashi
    COIN 2010 (9th International Conference on Optical Internet), July 11-14, 2010, Jeju, Korea.
  • The path to energy efficient optical networking
    K. Sato
    Photonics in Switching 2010, Plenary/Invited, JTuA2, Monterey, California, July 25-28, 2010.
  • Optical technologies that enable Green networks
    K. Sato
    12th International Conference on Transparent Optical Networks, ICTON 2010, Mo.A.2, Munich, June 27-July 1, 2010. (Plenary/Invited)
  • Hierarchical optical path network design for future peta-bit class networks
    H. Hasegawa and K. Sato
    invited, OECC 2010, 9A4-1, Sapporo, Japan, July 5-9, 2010.
  • Cost evaluation of hybrid-hierarchical optical cross-connects based optical path network
    L. H. Chau, H. Hasegawa and K. Sato
    The Third International Conference on Communications and Electronics 2010, ICCE 2010, Nha Trang, Vietnam, August 11 ? 13, 2010.
  • Coarse granular routing in optical path networks and impact of supplemental intermediate grooming
    Y. Yamada, H. Hasegawa, and K. Sato
    ECOC 2010 - 36th European Conference and Exhibition on Optical Communication, Th.10.F.1, Torino, September 19-23, 2010.
  • Development of compact hierarchical optical path cross-connect prototype utilizing integrated colorless multi/demultiplexers
    R. Hirako, K. Ishii, H. Hasegawa, and K. Sato
    ECOC 2010 - 36th European Conference and Exhibition on Optical Communication, We.8.A.5, Torino, September 19-23, 2010.
  • Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation
    T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, Y. Sone, A. Watanabe, A. Hirano, B. Kozicki, T. Takara, and M. Jinno
    ECOC 2010 - 36th European Conference and Exhibition on Optical Communication, We.8.D.5, Torino, September 19-23, 2010.
  • Role of optics and electronics in creating future broadband networks
    K. Sato
    ECOC 2010, -36th European Conference and Exhibition on Optical Communication, We.6.F.2, Torino, September 19-23, 2010. (invited)
  • Hybrid hierarchical optical path network design algorithm applying a 2-stage ILP optimization
    L. H. Chau, H. Hasegawa and K. Sato
    Asia Communications and Photonics Conference and Exhibition 2010, ACP 2010, ThD3, Shanghai, December 9-11, 2010.
  • Ring connecting node architecture employing variable filter
    T. Oono, K. Ishii, H. Hasegawa, K. Sato
    Asia Communications and Photonics Conference and Exhibition 2010, ACP 2010, ThH4, Shanghai, December 9-11, 2010.
  • A dynamic path control method applying traffic-prediction-based route pre-prioritization
    H. Ohno, H. Hasegawa, K. Sato
    Asia Communications and Photonics Conference and Exhibition 2010, ACP 2010, FQ4, Shanghai, December 9-11, 2010.
  • Switch scale evaluation for optical cross-connects considering add/drop ratio restriction
    H. Hirako, K. Ishii, H. Hasegawa, K. Sato
    Asia Communications and Photonics Conference and Exhibition 2010, ACP 2010, ThH3, Shanghai, December 9-11, 2010.
  • The future transport node technologies
    K. Sato
    Asia Communications and Photonics Conference and Exhibition 2010, ACP 2010, SI1, Shanghai, December 9-11, 2010 (invited).
  • A new multi-state route scheduling algorithm based on traffic prediction
    K. Obara, H. Hasegawa, K. Sato
    ONDM 2010 (14th Conference on Optical Network Design and Modeling), February 1–3, 2010, Kyoto, Japan.
200915
  • Survivable hierarchical optical path networks employing waveband and wavelength path protection
    Y. Yamada, H. Hasegawa and K. Sato
    OFC 2009, OWY3, San Diego, March 22-26, 2009.
  • An Ultra-compact Waveband Cross-connect Switch Module to Create Cost-effective Multi-degree Reconfigurable Optical Node
    K. Ishii, H. Hasegawa, K. Sato, M. Okuno, S. Kamei, and H. Takahashi
    ECOC 2009 -35th European Conference on Optical Communication, Vienna, Austria, September 20-24, 2009, 4.2.2.
  • Efficient ROADM-ring Connecting Node Switch Architecture that Utilizes Waveband Routing and its Realization with PLC Technologies
    K. Ishii, O. Moriwaki, H. Hasegawa, K. Sato, Y. Jinnouchi, M. Okuno, and H. Takahashi
    ECOC 2009 (35th European Conference on Optical Communication), Vienna, Austria, September 20-24, 2009, 5.3.1.
  • Route and Wavelength/Waveband Assignment for Creation of Compact Hierarchical Optical Cross-Connect for Multi-Ring Connection
    K. Ishii, H. Hasegawa, K. Sato
    ECOC 2009 - 35th European Conference and Exhibition on Optical Communication, Vienna, Austria, September 20-24, 2009, 4.6.2.
  • Future high-bandwidth demand services and network trend
    K. Sato
    OECC 2009 (14th Optoelectronics and Communications Conference), Workshop, Hong Kong, July 13, 2009. (Invited)
  • The Future optical network
    K. Sato
    IEEE Photonics Society Summer Topicals 2009, Newport Beach, California, July 20-22, 2009. (Invited)
  • Future directions of optical networking technology development – Optical fast circuit switching and multilevel optical routing
    K. Sato
    Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, WeII1-2. (Invited)
  • Hierarchical optical path network design algorithm that can best utilize WSS/WBSS based cross-connects
    L. H. Chau, H. Hasegawa and K. Sato
    Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, ThII2-3.
  • Low loss and cost-effective hierarchical optical path cross-connect switch architecture based on WSS/WBSS
    S. Mitsui, H. Hasegawa and K. Sato
    Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, FrII2-3.
  • Hierarchical optical cross-connect architecture that implements colorless waveband Add/Drop ratio restriction utilizing a novel wavelength multi/demultiplexers
    R. Hirako, K. Ishii, H. Hasegawa, K. Sato, and O. Moriwaki
    Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, FrII2-2.
  • Impact of path granularity and operation interval on dynamic path network control
    H. Ito, H. Hasegawa, and K. Sato
    ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
  • Evaluations on Physical and Optical Path Level Hierarchical Networks to Implement Optical Fast Circuit Switching
    T. Ogawa, Y. Yamada, H. Hasegawa, K. Sato
    ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
  • Impact of waveband capacity on protected hierarchical optical path networks
    Y. Yamada, H. Hasegawa, and K. Sato
    ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
  • A dynamic routing algorithm for multi-domain photonic networks using averaged link load information
    K. Shimada, S. Araki, H. Hasegawa, and K. Sato
    ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
  • New dynamic network design and provisioning algorithms for broadband connection services considering fairness
    M. Nakagawa, H. Hasegawa, K. Sato, R. Sugiyama, T. Takeda, E. Oki, and K. Shiomoto
    ONDM 2009 (13th Conference on Optical Network Design and Modeling), Braunschweig, Germany, February 18-20, 2009, Paper #1569164809.
200815
  • 8x8 wavelength router with transmission channel reallocation capability
    O. Moriwaki, K. Suzuki, H. Takahashi, K. Sato, and S. Kakehashi
    OFC 2008, OWC5, San Diego, February 2008.
  • Interleaved waveband MUX/DEMUX developed on single arrayed-waveguide grating
    S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki
    OFC 2008, OThE1, San Diego, February 2008.
  • Cost comparisons for hierarchical and single-layer optical path networks considering waveband and wavelength path protection
    Y. Yamada, H. Hasegawa, K. Sato
    OFC 2008, OThI4, San Diego, February 2008.
  • Key enabling photonic network technologies for future networks
    K. Sato
    The 17th Wireless and Optical Communications Conference, WOOC 2008, Taichung, Taiwan, April 23-24, 2008, pp. 81-82. (Invited)
  • Hierarchical optical path cross-connect node architecture using WSS/WBSS
    S. Mitsui, H. Hasegawa and K. Sato
    Photonics Switching 2008, S-04-1, Hokkaido, Japan, August 4-7, 2008.
  • Future directions of networking technologies
    K. Sato
    FISC 2008/AsiaFI (Future Internet Summer Camp 2008/First Asia Future Internet (AsiaFI) School on Architecture and Building Blocks), Jeju, Korea, August 25-29, 2008. (Invited)
  • Network segmentation and design algorithm for large-scale optical path networks based on traffic distribution information
    T. Yamamoto, H. Hasegawa, and K. Sato
    ECOC 2008, We.2.B.6, Brussels, September 22-25, 2008.
  • Monolithically Integrated Waveband Selective Switch Using Cyclic AWGs
    K. Ishii, H. Hasegawa, K. Sato, S. Kamei, H. Takahashi, and M. Okuno
    ECOC 2008, Mo.4.C.5, Brussels, September 22-25, 2008.
  • Optical Multicast Tree Construction Algorithm Considering SNR Constraint and 3R Regeneration
    Y. Morita, H. Hasegawa, K. Sato, Y. Sone, K. Yamada, M. Jinno
    ECOC 2008, We.3.A.4, Brussels, September 22-25, 2008.
  • The future of optical networks
    K. Sato
    ECOC 2008, We.3.A.1, Brussels, September 22-25, 2008. (invited)
  • Optical path dynamic routing algorithm based on traffic prediction
    K. Obara, H. Hasegawa, K. Sato
    APOC 2008 (Asia-Pacific Optical Communications), SPIE Conference 7137, Session 9a, Hangzhou, China, October 26–30, 2008.
  • Evaluation of network parameter dependencies of hierarchical optical path network cost considering waveband protection
    Y. Yamada, H. Hasegawa and K. Sato
    COIN 2008, Akihabara, Tokyo, October 14-16, 2008.
  • Hierarchical optical path network design algorithm considering waveband add/drop ratio constraint
    L. H. Chau, H. Hasegawa and K. Sato
    COIN 2008, Akihabara, Tokyo, October 14-16, 2008.
  • Performance evaluation of dynamic network design for provisioning of broadband connection services
    M. Nakagawa, H. Hasegawa, K. Sato, R. Sugiyama, T. Takeda, E. Oki, and K. Shiomoto
    COIN 2008, Akihabara, Tokyo, October 14-16, 2008.
  • Advances in photonic networking technology and its impact on future networks
    K. Sato
    APOC 2008 (Asia-Pacific Optical Communications), SPIE Conference 7137, Session 8a, Hangzhou, China, October 26–30, 2008. (Invited)
200714
  • Loop-back AWG Router with Non-uniform Number of Transmission Paths
    Moriwaki, K. Suzuki, H. Takahashi, Y. Sakai , K. Sato, and S. Kakehashi
    OFC 2007, JThA24, Anaheim, March 25-29, 2007.
  • Quasi-Dynamic Network Design Considering Different Service Holding/Contract Terms
    K. Kanie, H. Hasegawa, and K. Sato
    OFC 2007. JThA65, Anaheim, March 25-29, 2007.
  • Waveband MUX/DEMUX Using Concatenated AWGs -Formulation of Waveguide Connection and Fabrication
    S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki, S. Kamei, Y. Jinnouchi, and M. Okuno
    OFC 2007, JThA94, Anaheim, March 25-29, 2007.
  • Recent Developments in and Challenges of Photonic Networking Technologies
    K. Sato
    Plenary of COIN-ACOFT International Conference 2007, Melbourne, Australia, June 24-27, 2007.
  • Fast generation of orthogonal periodic polynomials and its application to smooth approximation of the Internet traffic
    H. Hasegawa, N. Matsusue, and K Sato
    OECC/IOOC 2007, 13A2-3, Yokohama, July 9-13, 2007, pp. 540-541.
  • Recent advances and challenges of multi-granular optical path networks
    K. Sato
    2007 Japan-Italy Bilateral Workshop on Photonics for Communication, July 5-6, Osaka, Japan.
  • Multi-granular optical path networking technologies
    K. Sato
    Photonics in Switching 2007, WA4.2, San Francisco, August 19-22, 2007.
  • Simple node architectures for connection of two ROADM rings using hierarchical optical path routing
    K. Ishii, H. Hasegawa, and K. Sato
    Photonics in Switching 2007, TuA2.3, San Francisco, August 19-22, 2007.
  • Waveband selective switch using concatenated AWGs
    S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki, and M. Okuno
    ECOC 2007, Mo.2.5.3, Berlin, Germany, September 16-29, 2007.
  • Hierarchical optical path network design considering waveband protection
    Y. Yamada, H. Hasegawa, K. Sato
    ECOC 2007, Tu.7.5.5, Berlin, Germany, September 16-29, 2007.
  • Simple node architectures for connection of ROADM rings
    K. Ishii, H. Hasegawa, and K. Sato
    ECOC 2007, Th.2.5.3, Berlin, Germany, September 16-29, 2007.
  • Suppression of Boundary Effect and Introduction of Scale Correlation for Wavelet based Traffic Prediction
    N. Matsusue, H. Hasegawa and K Sato
    IEEE International Workshop on Multimedia Signal Processing, MMSP 2007, Crete, Greece, October 1-3, 2007, pp. 438-440.
  • An RWA algorithm for OBS networks based on iterative local optimization of total blocking probability
    T. Yoshikawa, H. Nagashima, H. Hasegawa, and K. Sato
    APOC 2007, Conference 6783-60, Wuhan, China, November 1-5, 2007.
  • Prospects and challenges of hierarchical optical networks
    K. Sato
    APOC 2007, Conference 6783-01, Wuhan, China, November 1-5, 2007.
20069
  • Design of MPLS/GMPLS multilayer network considering protection and restoration
    W. Imajuku, T. Ohara, R. Takeshima, T. Uyematsu, and K. Sato
    OFC 2006, OWQ6, Anaheim, March 5-10, 2006.
  • Optical switch architectures for hierarchical optical path networks
    S. Kakehashi, H. Hasegawa, and K. Sato
    Proc. SPIE, vol. 6388, Optics East 2006, Boston, October 2-4, 2006, pp. 638809-1 - 638809-9.
  • Waveband MUX/DEMUX Using Concatenated Arrayed-Waveguide Gratings
    S. Kakehashi, H. Hasegawa, K. Sato, and O. Moriwaki
    ECOC 2006, Cannes, September 24-28, 2006, We3.P.56.
  • An Efficient Hierarchical Optical Path Network Design Algorithm based on a Traffic Demand Expression in a Cartesian Product Space
    Yagyu , H. Hasegawa, and K. Sato
    ECOC 2006, Cannes, September 24-28, 2006, Tu.3.6.6.
  • Advances and challenges of IP plus photonic networks
    K. Sato
    Optics East 2006(ITCom2006), Boston, October 2-4, 2006.
  • Recent development and challenges of photonic networking technologies
    K. Sato
    Asia-Pacific Optical Communications Conference, APOC2006, Gwangju, Korea, September 3-7, 2006.
  • Development of hierarchical optical path network
    K. Sato
    KAIST International Workshop on "Harnessing Photonics for Future Applications," Seoul, Korea, September 2, 2006.
  • Toward 100 Tera b/s router
    K. Sato
    Optical Network Testbeds Workshop 3 (ONT3), Tokyo, September 7-8, 2006.
  • Advances and challenges of photonic networking technologies
    K. Sato
    Plenary of International Conference on Photonics in Switching 2006, Herakleion (Crete), Greece, October 16-18, 2006.
20057
  • Recent advances in photonic networking technologies
    K. Sato
    APRICOT 2005, Kyoto, Japan, February 21-24, 2005.
  • Prospects and challenges of Broadband IP networks
    K. Sato
    Broadband World Forum Asia, Yokohama, 30 May ?2 June, 2005.
  • Development of Broadband IP Networks in Japan
    K. Sato
    OECC 2005, Seoul July 5-8, 2005, pp. 12-13.
  • Segmented Network Design and Performance Evaluation for Large Scale Transparent OXC-based Networks
    K. Sugimura, H. Hasegawa and K. Sato
    Proc. of SPIE, Vol. 6012, 60120C-1-9, Optics East 2005(ITCom2005), Boston, October 23-26, 2005.
  • Multi-layered Photonic Network Design Considering Incremental Traffic Growth and Different Service Contract Terms
    Koichi Kanie, Hiroshi Hasegawa, and Ken-ichi Sato
    ECOC 2005, Invited, Tu4.3.1, Glasgow, September 2005.
  • Broadband Access and its Impact on Future Networks
    K. Sato
    Optics East 2005(ITCom2005), Boston, Plenary Session, November 23-25, 2005.
  • Photonic Switching Networks
    K. Sato
    Asia-Pacific Optical Communications Conference, APOC2005, Workshops on All-Optical Routers and Switches for Next Generation Networks, Shanghai, China, November 6-10, 2005.
20043
  • The optical path to the future IP networks
    K. Sato
    International Conference on Communication and Broadband Networking, ICBN '2004, Kobe, Japan, April 7-9, 2004.
  • The optical path to the future networks
    K. Sato
    Conference on Optoelectronics and Optical Communications, COOC 2004, Plenary talk, Daejon, Korea, May 12-14, 2004.
  • Prospects and Challenges of Photonic IP Networks
    K. Sato
    APOC 2004 (Asia-Pacific Optical Communications Conference), Beijing, China, Nov. 7 - 11, 2004, pp. 382-390.
20032
  • Key enabling optical technologies for future networks
    K. Sato
    Proc. OFC 2003, WH1, pp. 353-355, Atlanta, March 23-28, 2003.
  • What will promote the introduction of 40 Gb/s transmission technologies?
    K. Sato
    ECOC 2003, We2.1.2, Rimini, Italy, September 21-25, 2003.
20025
  • Making light work of the future IP network
    K. Sato
    Workshop on High Performance Switching and Routing 2002 (HPSR 2002), Kobe, Japan, May 26-29, 2002, pp. 4.
  • Network dimensioning of electrical/optical label switched multi-Layer photonic IP networks
    S. Kaneda, T. Uyematsu, N Nagatsu, and K. Sato
    7th European Conference on Networks & Optical Communications, NOC 2002, Darmstadt, Germany, June 18-21, 2002.
  • Recent Advances in Photonic Networking Technologies
    M. Koga and K. Sato
    COIN+PS 2002, Cheju, Cheju Island, Korea July 21 - 25, 2002.
  • Progress in photonic transport systems
    K. Sato
    Proc. SPIE (The International Society of Optical Engineering), vol. 4872, ITCom 2002, 29-31 July, 2002, Boston, pp. 148-159.
  • Demonstration of fast restoration for distributed control plane on photonic network
    K. Shimano, A. Sahara, M. Koga, Y. Takigawa and K. Sato
    ECOC '2002, Copenhagen, Sept. 8-12, 2002, paper 7.4.2.
20014
  • Advances in transport network technologies -SDH, ATM, and photonic networks-
    K. Sato
    Joint 4th IEEE International Conference on ATM(ICATM'01) and High Speed Intelligent Internet Symposium, April 22-25, 2001, Seoul, Korea, pp. 17.
  • Development of photonic router (256x256 OLSPs) to develop next generation network with MPLambdaS control
    F. Kano, T. Kawai, Y. Takigawa and K. Sato
    NFOEC '2001, Baltimore, MD, July 8-12, 2001, pp. 468-454.
  • MPLambdaS demonstration employing photonic routers (256x256 OLSPs) to integrate optical and IP networks
    K. Shimano, A. Imaoka, Y. Takigawa and K. Sato
    NFOEC '2001, Baltimore, MD, July 8-12, 2001, pp. 5-13.
  • Development of photonic MPLS router
    K. Shimano, Y. Takigawa, M. Koga, and K. Sato
    ECOC '2001, Amsterdam, Sept. 30-Oct. 4, 2001, Tu.F.2.2, pp. 148-149.
20005
  • Photonic transport network testbed -fault/degradation management-
    K. Sato
    OFC '2000, Baltimore, March 5-10, 2000, TuQ2, pp. 239.
  • Photonic transport network testbed of NTT
    A. Watanabe, S. Okamoto, T. Kawai, M. Koga, K. Sato, K. Kawai, O. Ishida and H. Ichino
    ECOC '2000, Munich, September 3-7, 2000, pp. 81-84.
  • Direction of photonic transport network development
    K. Sato
    ECOC' 2000 Workshop on The Optical layer for Data Networking, September 3, 2000, Munich.
  • Over 1000 channel optical frequency chain generation from a single supercontinuum source with 12.5 GHz channel spacing for DWDM and frequency standards
    H. Takara, T. Ohara, K. Mori, K. Sato, E. Yamada, K. Jinguji, T. Inoue, T. Shibata, T. Morioka, and K-I Sato
    ECOC' 2000 Post deadline paper PD-3.1, September 3-7, 2000, Munich.
  • Recent advances in photonic networking technologies
    K. Sato
    Technical Digest, Fourth International Topical Workshop on Contemporary Photonic Technologies, CPT 2001, January 15-17, 2000, Tokyo, pp. 29-30.
19994
  • Photonic network research activities and testbed experiments in NTT
    K. Sato
    OFC '99, San Diego, February 21-26, 1999, ThP1-1, pp. 228-230.
  • WDM optical path-based IP backbone network
    A. Watanabe, S. Okamoto and K. Sato
    OFC '99, San Diego, February 21-26, 1999, TuF1-1, pp. 56-58.
  • Large-scale and highly-meshed WDM ring networks using flexible OADM
    N. Nagatsu, S. Okamoto, M. Koga and K. Sato
    ECOC'99.
  • Photonic transport network based on WDM technologies
    K. Sato
    The Royal Society Discussion Meeting -Network Modeling in the 21st Century-, December 6-7, 1999, London.
19989
  • Introduction strategy of photonic network technologies to create bandwidth-abundant multimedia networks
    K. Sato
    Technical Digest of OFC '98, San Jose, 22-27 February 1998, TuQ3, pp. 95-96.
  • Multimedia services and photonic network technologies
    K. Sato
    Workshop Note, ICC '98 Workshop on Management of Multiwavelength Optical Networks, Atlanta, June 7, 1998.
  • Performance and Node Architecture of WDM Multiple Fiber Ring Networks
    N. Nagatsu, A. Watanabe, S. Okamoto and K. Sato
    Proc. ICC '98, Atlanta, June 7-11, 1998, S26-6, pp. 931-936.
  • Network performance and OA&M mechanism for WDM optical path transport networks
    S. Okamoto, A. Watanabe, N. Nagatsu and K. Sato
    Proc. ICC '98, Atlanta, June 7-11, 1998, S6-6, pp. 207-212.
  • WDM optical path-based IP backbone network and optical path termination circuit
    A. Watanabe, S. Okamoto, K. Kawai and K. Sato
    Third Optoelectronics and Communications Conference, OECC '98, Chiba, Japan, June 13-16, 1998, Post Deadline Paper PD1-5.
  • Large scale photonic transport system and supervision scheme
    Y. Hamazumi, M. Koga and K. Sato
    Third Optoelectronics and Communications Conference, OECC '98, Chiba, Japan, June 13-16, 1998.
  • Optical networking and applications
    K. Sato
    GLOBECOM '98 Workshop WK01, Optical Networking: Applications and Services, Sydney, Australia, November 8, 1998.
  • Low-power small-size Gbit/s interface technologies for robust photonic transport networks
    H. Ichino, K. Kawai, S. Okamoto, M. Koga and K. Sato
    GLOBECOM '98, Sydney, Australia, 8-12 November 1998, pp. 1012-1017.
  • Optical path fault management in layered networks
    Y. Hamazumi, M. Koga, K. Kawai, H. Ichino and K. Sato
    GLOBECOM '98, Sydney, Australia, 8-12 November 1998, pp. 2300-2314.
19974
  • Optical path cross-connect system
    M. Koga and K. Sato
    2nd Optoelectronics and Communications Conference, OECC '97, Seoul, Korea, July 8-11, 1997, 9A1-2, pp. 80-81.
  • Multimedia communication and its impact on photonic networking
    K. Sato
    Digest of the LEOS Summer Topical Meetings, Montreal, Canada, 11-15 August 1997, MB2.
  • Inter-network interface for photonic transport networks and SDH transport networks
    S. Okamoto and K. Sato
    Proc. Globecom '97, November 3-8, 1997, Phoenix, Arizona, pp. 850-855.
  • Modular cross-connect system for WDM optical-path networks
    O. Ishida, N. Takachio and K. Sato
    ECOC '97, Edinburgh, UK, September 22-25, 1997, pp. 63-66.
199612
  • Failure restoration in photonic transport networks using optical paths
    K. Sato and N. Nagatsu
    OFC '96, San Jose, February 25-March 1, 1996, pp.215-216.
  • Optical path network OA&M technologies
    K. Sato
    2nd International Workshop on Optical Networking, at OFC '96, San Jose, March 1, 1996, p.11.
  • 8x16 delivery and coupling type optical switches for a 320 Giga-bit/s throughput optical path cross-connect system
    M. Koga, A. Watanabe, S. Okamoto, K. Sato and M. Okuno
    OFC '96, San Jose, February 25-March 1, 1996, pp.259-261.
  • 4x4 port optical path cross-connect transport experiments employing 8x2.5 Gb/s unequally spaced wavelength division multiplexing
    Y. Hamazumi, A. Watanabe, M. Koga, M. Ishii, S. Suzuki and K. Sato
    OFC '96, San Jose, February 25-March 1, 1996, pp.263-264.
  • Network architecture and management concepts for optical transport networks
    S. Okamoto, K. Oguchi and K. Sato
    IEEE NOMS '96, Kyoto, Japan, April 15-19, 1996, 3.1, pp. 1-11.
  • Optical path accommodation design considering failure restoration with minimum cross-connect system scale
    N. Nagatsu, S. Okamoto and K. Sato
    IEEE NOMS '96, Kyoto, Japan, April 15-19, 1996, 10.1, pp. 213-224.
  • Performances of an optical path cross-connect system and its wavelength monitoring circuit
    M. Koga, Y. Hamazumi, M. Teshima, A. Watanabe and K. Sato
    Proc. ICC '96, Dallas, June 23-27, 1996, pp. 1771-1777.
  • Layered architecture of WDM networks employing optical paths
    S. Okamoto, K. Oguchi and K. Sato
    Second IEEE COMSOC Workshop on WDM Optical Network Management and Control, at ICC '96, Dallas, June 23 1996.
  • Packaging of 8x16 delivery and coupling switch for a 320 Gb/s throughput optical path cross-connect system
    A. Watanabe, S. Okamoto, M. Koga, K. Sato and M. Okuno
    Proc. ECOC '96, September 15-19, 1996, Oslo, Norway, 4.111-4.114.
  • Recent advances in photonic transport network technologies
    K. Sato
    Proc. ECOC '96, September 15-19, 1996, Oslo, Norway, TuB.1.4, 2.27-2.34.
  • Optical path cross-connect demonstrator designed to achieve 320 Gbit/s
    M. Koga, A. Watanabe, S. Okamoto, K. Sato, H. Takahashi and M. Okuno
    ECOC '96, September 15-19, 1996, Oslo, Norway, Post-Deadline Paper ThC.3.1.
  • Large scale photonic transport network design based on optical paths
    N. Nagatsu, S. Okamoto and K. Sato
    Proc. Globecom '96, November 18-22, 1996, London, pp. 321-327.
19954
  • Management concepts of optical path networks
    S. Okamoto, N. Nagatsu, K. Oguchi and K. Sato
    First IEEE COMSOC Workshop on WDM Optical Network Management and Control, at ICC '95, Seattle, June 18 1995, Paper #3, pp. 19-26.
  • New Optical Path Cross-Connect Architectures Offering High Modularity
    A. Watanabe, S. Okamoto, K. Sato and M. Okuno
    2nd Asia-Pacific Conference on Communications, APCC '95, Osaka, Japan, June 13-16, 1995, pp. 89-92.
  • Optical path network architecture and systems
    K. Sato
    Optical Networking Forum Workshop, Brussels, September 22, 1995, S1.3.
  • Optical path network OA&M issues
    K. Sato
    Optical Networking Forum Workshop, Brussels, September 22, 1995, S3.2.
19944
  • Number of Wavelengths Required for Optical Networks Considering Failure Restoration
    Y. Hamazumi, N. Nagatsu and K. Sato
    Proc. OFC '94, San Jose, California, February 21-26, 1994, TuO4, pp67-68.
  • Optical Path Cross-connect Node Architecture for Photonic Transport Networks
    S. Okamoto, A. Watanabe and K. Sato
    Proc. 7th Joint Conference on Communications, Networks and Switching Systems (JC-CNSS '94), Taejon, Korea, July 13-15, 1994, pp. 359-364.
  • Transport Network Evolution with Optical Paths
    K. Sato
    Proc. ECOC '94, September 25-29, 1994, Italy, Florence, pp.919-926.
  • Optical paths and realization technologies
    K. Sato, S. Okamoto and A. Watanabe
    Proc. GLOBECOM '94, San Francisco, Nov. 29-Dec. 2 1994, pp. 1513-1520.
19935
  • Broadband ISDN using ATM virtual path techniques
    K. Sato and I. Tokizawa
    Proc. OFC/IOOC'93, San Jose, California, February 21-26, 1993, TuE2.
  • Optical path layer technologies to enhance B-ISDN performance
    K. Sato, S. Okamoto and H. Hadama
    Proc. ICC '93, Geneva, 1993, vol. 3, pp. 1300-1307.
  • Jitter tolerant usage parameter control method for ATM-based B-ISDN
    N. Yamanaka, T. Takenaka, Y. Sato and K. Sato
    Proc. 2nd Int. Conf. on Computer Communications and Networks (IC3N), San Diego, California USA, June 28-30, 1993, pp. 54-61.
  • Optical path cross-connect systems for photonic transport network
    S. Okamoto and K. Sato
    Proc. GLOBECOM 93, Nov. 29-Dec. 2, 1993, Houston, pp. 474-480.
  • Comparison of traffic management schemes for ATM network
    Y. Sato and K. Sato
    IEEE 18th Conference on Local Computer Networks, Minneapolis, Minnesota, September 19-22, 1993, pp. 397-402.
19924
  • Self-healing network techniques utilizing Virtual Paths
    R. Kawamura, K. Sato and I. Tokizawa
    5th Int. Network Planning Symposium, Networks '92, Kobe, Japan, May 17-22, 1992, pp. 129-134.
  • Usage parameter control and bandwidth allocation methods for ATM-based B-ISDN
    N. Yamanaka, Y. Sato and K. Sato
    Presented at 4th IEEE COMSOC Int. Workshop, Multimedia '92, Monterey, April 1-4 1992, pp. 210-216.
  • Failed path restoration with distributed control scheme in ATM networks
    R. Kawamura, K. Sato and I. Tokizawa
    Proc. IFIP/IEEE Int. Workshop on Distributed Systems: Operations & Management, Munich, Germany, October 12-13, 1992.
  • An ATM VP-based broadband network: its techniques and application to multimedia services
    T. Aoyama, I. Tokizawa and K. Sato
    Proc. ISS '92, Yokohama, Japan, October 25-30, 1992, A1.3.
19913
  • High-speed ATM transport system experiment base on virtual path techniques
    N. Tokura, H. Obara and K. Sato
    Proc. ISSLS '91, Amsterdam, April 1991, pp. 155-161.
  • Introduction strategy of B-ISDN based on virtual paths
    K. Sato, R. Kawamura, and I. Tokizawa
    Proc. FORUM '91 (Technical Symposium of TELECOM 91), Geneva, Switzerland, October 10-15, 1991, Session 2.5, pp. 225-229.
  • Experimental ATM transport system and virtual path management techniques
    Y. Sato, N. Yamanaka, K. Sato and N. Tokura
    Proc. GLOBECOM 91, Phoenix, Arizona, Dec. 2-5 1991, Session 59, 59.6.1-59.6.7.
19905
  • Flexible asynchronous transfer mode networks utilizing Virtual Paths
    K. Sato and I. Tokizawa
    Proc. ICC '90, Atlanta, USA, April 16-19, 1990, 318.4.1.- 318.4.8.
  • Dynamic bandwidth control of Virtual Paths in ATM networks
    H. Hadama, K. Sato and I. Tokizawa
    Presented at 3rd IEEE Int. Workshop on Multimedia Commun, MULTIMEDIA '90, Bordeaux, France, November 14-17, 1990.
  • Network reliability enhancement with Virtual Path strategy
    K. Sato, H. Hadama and I. Tokizawa:
    Proc. GLOBECOM '90, San Diego, Dec. 2-5, 1990, 403.5.1-403.5.6.
  • Broadband transport techniques based on Virtual Paths
    I. Tokizawa, and K. Sato
    Proc. GLOBECOM '90, San Diego, Dec. 2-5, 1990, 705B.4.1-705B.4.5.
  • Migration Strategies to an ATM network
    K. Sato and H. Ohnishi
    Compendium of Presentation, ComForum 90, Orlando, Florida, December 11-12 1990, D5-11 - D5-20.
19892
  • Dynamic reconfiguration of ATM-based network via Virtual Path strategy
    K. Sato, S. Ohta and I. Tokizawa
    Proceedings of the 2nd IEEE ComSoc International Workshop on Multimedia Communications, Ottawa, Canada, April 20-23, 1989, pp. 1-8.
  • Virtual path capabilities by ATM-based digital cross-connect systems
    I. Tokizawa and K. Sato
    Presented at IEEE International Digital Cross-connect Workshop III, Banff, Canada, June 1989.
19884
  • Variable rate speech coding and network delay analysis for universal transport network
    K. Sato, H. Nakada and Y. Sato
    Proc. INFOCOM '88, New Orleans, March 27-31 1988, 8A.2.1-8A.2.10.
  • A new transport network based on ATM techniques, -A Virtual Path concept-
    M. Sasagawa, K. Sato and I. Tokizawa
    Presented at the Workshop on Asynchronous Transfer Mode, Geneva, Switzerland, June 1988.
  • A new transport network architecture based on Asynchronous Transfer Mode techniques
    I. Tokizawa, T. Kanada and K. Sato
    Proc. ISSLS '88, Boston, September 1988, 11.2.1-11.2.5.
  • A dynamically controllable ATM transport network based on the Virtual Path concept
    S. Ohta, K. Sato and I. Tokizawa
    Proc. GLOBECOM 88, Nov. 28 - Dec. 1, 1988, Lauderdale, FL. USA, 39.2.1.-39.2.5.
19872
  • Network delay analysis for universal transport network
    K. Sato, H. Nakada and Y. Sato
    Presented at IEEE COMSOC Int. Workshop on Future Prospects of Burst/Packetized Multimedia Commun., Nov. 22-24, 1987, Osaka, Japan.
  • An ATM based transport network architecture
    T. Kanada, K. Sato and T. Tsuboi
    Presented at IEEE COMSOC Int. Workshop on Future Prospects of Burst/Packetized Multimedia Commun., Nov. 22-24, 1987, Osaka, Japan.
19831
  • Reflection-induced laser noise evaluation and its use in transmission system design
    K. Ohnishi and K. Sato
    in Tech. Digest, Topical Meeting on Optical Fiber Communication, New Orleans, Louisiana, Feb. 28 - Mar. 2, 1983, pp. 68-69.
19792
  • Feasibility experiments on analog video transmission using a semiconductor laser diode
    K. Asatani, K. Sato and H. Ishio
    in Proc. 5th European Conf. Opt. Commun., Amsterdam, Sept. 17-19, 1979, Post Deadline Paper 16-8.
  • Estimation of bandwidths of long-distance graded-index fibers
    T. Matsumoto, K. Sato, I. Nakagawa and K. Hashimoto
    Proc. 5th European Conf. Opt. Commun., Amsterdam, Sept. 17-19, 1979, 17.5.

Books18

2010s3
  • Elastic Optical Networks, Architectures, Technologies, and Control, (Co-author, Chapter 6; Node Architectures for Elastic and Flexible Optical Networks), Editors: Victor Lopez and Velasco Luis, Springer International Publishing, 2016, (ISBN 978-3-319-30173-0)).
  • Introduction to Information Network Science (Co-author, Chapter 7; Information Network and Energy Consumption), Editors: Masayuki Murata and Makoto Naruse, Corona Publishing Co., Tokyo, 2015, (ISBN 978-4-339-02801-0).
  • Information Networks, Editor and co-author, Ohmsha Publishing Co., Tokyo, 2012 (ISBN: 978-4-274-21120-1).
2000s7
  • Frontiers in Optical Science 2, Japan Intense Light Field Science Society Edited, V-2-1. Photonic Network, (Co-author), 2009 (ISBN: 978-4-902590-13-5) (in Japanese).
  • Encyclopedia of Information Technologies for Information Systems, (Co-author) Baifukan Publishing Co., Tokyo, 2006 (ISBN: 4-563-01560-1) (in Japanese).
  • Frontier of Studies on Optical Science, Japan Intense Light Field Science Society Edited, (Co-author), 2005 (ISBN: 4-902590-01-8) (in Japanese).
  • Encyclopedia on Optical Technologies, (Co-author) Optronics Publishing Co., Tokyo, 2004 (ISBN: 4-902312-08-5). (in Japanese)
  • Optical Communication Technologies Handbook, (Co-author) Corona Publishing Co., Tokyo, Chapter 4.3: Photonic Transport Network Technologies, 2003 (ISBN: 4-339-00754-4). (in Japanese)
  • Broadband Photonic Networking Technologies , K. Sato edit, Institute of Electronics, Information and Communication Engineers of JAPAN, 2003 (ISBN: 4-88552-193-9). (in Japanese)
  • Optical Communication Technologies Handbook, (Co-author) Optronics Publishing Co., Tokyo, 2002 (ISBN: 4-900474-91-6). (in Japanese)
1990s6
  • Multimedia Communication Networks: Technologies and Services, Chapter 6: Trunk Transport Network Architectures and Technologies for Multimedia Services, Artech House, 1998 (ISBN 0-89006-936-0).
  • Optical Communication Engineering (2), (Co-author) Corona Publishing Co., Tokyo, vol. 2, Chapter 8.1: Photonic Transport Network, 1998 (ISBN: 4-339-01144-4). (in Japanese)
  • Encyclopedia Electronics, Information and Communications Handbook, (Co-author) Ohmsha Publishing Co., Tokyo, 1998 (ISBN: 4-274-03514-X).
  • Science of Lasers, (Co-author) Maruzen Publishing Co.,1997 (ISBN: 4-621-04371-4).
  • K. Sato, Advances in Transport Network Technologies: Photonic networks, ATM, and SDH, Artech House, Norwood, 1996, (ISBN 0-89006-851-8).
  • Broadband ISDN and ATM Technologies: Institute of Electronics, Information and Communication Engineers of JAPAN edit, co-author, February 1995 (ISBN 4-88552-127-0). (in Japanese)
1980s1
  • K. Sato and K. Asatani, "Fiber optic analog video transmission using semiconductor laser diodes," in Japan Annual Reviews in Electronics, Computers & Telecommunications ---- Optical Devices & Fibers 1982-------, North-Holland Publishing Co., 1982 (ISSN: 0167-50036)
Other1
  • WDM Technologies: Optical Networks, Edited by K. Dutta, N. K. Dutta and M. Fujiwawa, A volume in the Optics and Photonics Series, Chapter 3: Optical Path Cross-Connect, Elsevier Inc., San Diego, USA (ISBN: 0-12-225263-2).

Honors25

2020s1
  • 2020, IEICE Best Paper Award, to the paper, “Improved Optical Amplification Efficiency by Using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks,” authored by Hitoshi Takeshita, Keiichi Matsumoto, Hiroshi Hasegawa, Ken-ichi Sato, Emmanuel Le Taillandier de Gabory, Vol.E102-B, No.8, pp. 1579-1589, August 2019.
2010s8
  • 2019, Honorary Member, the Institute of Electronics, Information and Communication Engineers (IEICE).
  • 2018, SPIE Photonics West 2018, Optical Communications Best Paper Award, for an outstanding paper on, “Demonstration of 153.6-Tbps throughput from 1,536x1,536 optical switch with uniform-loss and cyclic-frequency AWGs,” Paper 10560-24, by Hiroki Nagai, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato, San Francisco, January 27 ? February 1, 2018.
  • 2017, IEEE Communications Society, Optical Networking Technology Committee, 2017 Outstanding Technical Achievement Award, For contributions to Photonic Systems and Transport Networks
  • 2016 IEEE 6th International Conference on Photonics (ICP 2016), Best Paper Award, to the paper, “Low-Loss and Large-Scale Optical Switch Utilizing Asymmetric-Port-Count Cyclic AWGs,” authored by K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, Malaysia, March 14-16, 2016.
  • OECC/PS 2016 (The 21st OptoElectronics and Communications Conference/International Conference on Photonics in Switching 2016) Best Paper Award, to the paper, “Demonstration of 1,440x1,440 fast optical circuit switch for datacenter networking,” authored by Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, Shu Namiki, Toshio Watanabe, and Ken-ichi Sato, July 3-7, 2016, Niigata, Japan.
  • 2014, the Medal of Honor with Purple Ribbon from Japan’s Cabinet Office, April 29, 2014.
  • 2013, CLEO-PR & OECC/PS 2013, The 10th Conference on Lasers and Electro-Optics Pacific Rim, and The 18th OptoElectronics and Communications Conference/Photonics in Switching 2013, Best Paper Award, to the paper “Performance evaluation of large-scale OXC architectures that utilize intra-node routing restriction,” authored by L. H. Chau, H. Hasegawa and K. Sato, MQ2-2, Kyoto, June 30-July 4, 2013.
  • 2012, IEICE Distinguished Achievement and Contributions Award
2000s8
  • 2009, ONDM 2009 (The 13th International Conference on Optical Networking Design and Modeling - ONDM 2009) Best Paper Award, for the paper, New dynamic network design and provisioning algorithms for broadband connection services considering fairness
  • 2007, IEICE Communications Society Best Tutorial Paper Awards: Recent developments in and challenges of photonic networking technologies
  • 2007, IEICE Communications Society Best Tutorial Paper Awards: Prospects and challenges of multi-layer optical networks
  • 2005, IEICE Communications Society, Praise for distinguished services for leading and managing Photonic Networking technical group
  • 2004, NTT R&D Fellow Awards, for his contributions and leadership in research and development of telecommunication network technologies.
  • 2003, IEICE Fellow Awards for contributions to the ATM transport network and photonic network technology development.
  • 2002, Commendation by the Minister of Education, Culture, Sports, Science and Technology for his contribution to photonic transport network technologies development
  • 2000, the Achievement Award from the IEICE of JAPAN for his contribution to pioneering works on photonic transport network research and development
1990s6
  • 1999, IEEE Fellow Award: For contributions to the architecture and technologies of Asynchronous Transfer Mode networks and photonic networks.
  • 1996, NTT Photonic Network Systems Laboratory President Award for his contribution to optical path networks.
  • 1995, the NTT President Award for his contribution to ATM network system development and its introduction.
  • 1991, NTT Transmission Systems Laboratory Director Award for his contributions to the design principles of Virtual Path networks.
  • 1991, the NTT R&D Award for his contribution to ATM network architecture and system technology development.
  • 1990, the Excellent Paper Award from the IEICE of JAPAN for a paper, “Architecture of the integrated services broadband transport network using Virtual Path concept,” authored by Ken-ichi Sato, Satoru Ohta, Ikuo Tokizawa, Vol.J72-B1, No.11, pp. 904-1916 November 1989.
1980s2
  • 1989, NTT Transmission Systems Laboratory Director Award for the invention of Virtual Path concept and studies on the transport systems based on the concept
  • 1984, the Young Engineer Award from the IEICE (Institute of Electronics, Information and Communication Engineers) of JAPANfor contributions to the elucidation of noise characteristics in optical fiber transmission systems employing laser diodes and multimode fibers.

Honors within NTT6

  • 1989, NTT Transmission System Laboratory principal award
  • 1991, NTT Transmission System Laboratory principal award
  • 1991, the NTT R&D Award for his contribution to ATM network architecture and system technology development
  • 1992, NTT Transmission System Laboratory principal award
  • 1995, the NTT President Award for his contribution to ATM network system development and its introduction
  • 2004, NTT R&D Fellow Awards, for his contributions and leadership in research and development of telecommunication network technologies