Y. Tanaka, H. Hasegawa, and K. Sato, "Performance analysis of large-scale OXC that enables dynamic modular growth," OSA Optics Express 23, pp. 5994-6006, Feb. 2015.
S. Takashina, Y. Mori, H. Hasegawa, and K. Sato, “Wavelength-tunable filters utilizing arrayed waveguide gratings for Colorless/Directionless/Contentionless optical signal drop in ROADMs,” IEEE Photonics Journal, Volume:7, Issue: 1, February 2015, pp. 1-11.
Z. Shen, H. Hasegawa, and K. Sato, "Integrity Enhancement of Flexible/Semi-Flexible Grid Networks That Minimizes Disruption in Spectrum Defragmentation and Bitrate-Dependent Blocking," OSA Journal of Optical Communications and Networking 7, pp. 235-247, March, 2015.
S. Takashina, H. Ishida, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “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,” IEEE Optics Express, Vol. 23, No. 11, May 2015, pp. 14796-14805.
H. Ishida, H. Hasegawa, and K. Sato, "Hardware Scale and Performance Evaluation of a Compact Subsystem Modular Optical Cross Connect That Adopts Tailored Add/Drop Architecture," OSA Journal of Optical Communications and Networking 7, pp. 586-596, June, 2015.
Y. Tanaka, H. Hasegawa, and K. Sato, "Criteria for Selecting Subsystem Configuration in Creating Large-Scale OXCs," OSA Journal of Optical Communications and Networking 7, pp. 1009-1017, September, 2015.
K. Ishii, J. Kurumida, K. Sato, T. Kudoh, and S. Namiki, "Unifying top-down and bottom-up approaches to evaluate network energy consumption." IEEE Journal of Lightwave Technology, Vol. 33, Issue 21, August 2015, pp. 4395-4405
A. Kadohata, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato, “Pre-adjustment rerouting for wavelength defragmentationin optical transparent WDM networks,” IEICE Trans. on Communications, Vol.E98-B, No.10, October 2015, pp. 2014-2021.
A. Kadohata, T. Tanaka, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato, "Differential reliability path accommodation design and reconfiguration in virtualized multi-layer transport network," IEICE Trans. on Communications, Vol. E98-B, No.11, pp. 2151-2159, November, 2015.
International Conferences
M. Niwa, S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Wavelength-tunable Filter Utilizing Non-cyclic Arrayed Waveguide Grating to Create Colorless/Directionless/Contentionless ROADMs,” in SPIE Photonics West, paper 9388-6, Feb. 2015.
M. M. Mauro, Y. Mori, H. Hasegawa, and K. Sato, “A novel optical path routing network that combines coarse granularity optical multicast with fine granularity add/drop and block,” Proc. SPIE 9388, Proc. SPIE 9388, Optical Metro Networks and Short-Haul Systems VII, 93880O, San Francisco,USA,February 2015.
H. Kawase, H.Hasegawa, and K. Sato, "Router Power Reduction by Active Performance Control Realized with Support Vector Machines," ICNC2015, pp.530-535, Anaheim, February, 2015.
H. Ishida, H. Hasegawa, and Ken-ichi Sato, "Highly Scalable Subsystem Modular OXC Nodes that Host Tailored Add/drop Mechanism," OFC2015, Th2A.47.
H. Hasegawa and K. Sato, “Large scale optical cross-connect: architecture, performance analysis, and feasibility demonstration,” OFC2015, W3J.1, Los Angels, March, 2015.
K.Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Large-Scale Optical-switch Prototype Compactly Implemented with Novel Functional Configuration”, OFC2015, W3D.1. Los Angels, March, 2015.
Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Residual Capacity Aware Dynamic Control of GREbased Routing Optical Path Networks under Traffic Growth Model”, OFC2015, paper Th1l.6. Los Angels, March, 2015.
Z. Shen, T. Kusano, H. Hasegawa, and K. Sato, “A novel routing and frequency slot assignment scheme that can adapt to transmission speed migration,” OFC2015, paper W1I.2, Los Angeles, March 2015.
H. Hasegawa, Y. Mori, and K. Sato, “Resilient grouped routing optical networks that adopt fine granular protection,” 19th International Conference on Optical Networks Design & Modeling, ONDM 2015, We7.3P, Pisa, Italy, May, 2015.
H. Hasegawa, S. Subramaniam, and K. Sato, “Flexible waveband routing optical networks,” IEEE International Conference on Communications, ICC 2015, London, June, 2015, pp. 6816-6821.
K. Ueda, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, T. Miyakawa, and H. Harai, “Experimental Demonstration of Multi-Granular Optical-Path Network Utilizing Wavelength/Waveband-Selective Switches,” in OptoElectrinics and Communications Conference, OECC2015, JThB.15, Shanghai,June, 2015.
A. Kadohata, T. Tanaka, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato, “Path Accommodation Design and Reconfiguration for Different Reliable Classes in Virtualized Multi-layer Transport Network,” The 20th OptoElectronics and Communications Conference, OECC2015, JTuB.24, Shanghai, June, 2015.
Y. Tanaka, H. Hasegawa, and K. Sato, “Performance Evaluation of Subsystem Modular OXCs with Different Subsystem Connection Configurations,” submitted to Opto Electronics and Communications Conference, OECC2015, PWe.05, Shanghai, June, 2015.
T. Miyazawa, T. Hirayama, H. Harai, K. Ueda, Y. Mori, H. Hasegawa and K. Sato, “Wavelength path signalling for WSS/WBSS combined optical switches in hierarchical optical networks,” The International Conference on Transparent Optical Networks, ICTON 2015, Tu.B.3.5, Hungary, July, 2015.
K. Sato, “Key technologies to expand optical networking capabilities,” The International Conference on Transparent Optical Networks, ICTON 2015, We.D.3.2, Hungary, July, 2015.
K. Ishii, J. Kurumida, K. Sato, T. Kudoh, and S. Namiki, "Estimation of energy consumption of data communication network in Japan," the 7th International Symposium on Ultrafast Photonic Technologies (ISUPT 2015), Extremely Advanced Transmission Technology (ISUPT/EXAT 2015), P-4, Kyoto, July, 2015.
K. Sato, “Photonic networking technologies for inter- and intra- data centers,” Majorca at MIT Workshop, July 27-29, 2015, MIT, Cambridge.
K.Ueda, Y. Mori, H. Hasegawa, K. Sato, T. Watanabe, “Large-scale optical switch with simplified sub-switch connections for datacenter application,” Photonics in Switching, FrIII2-2, Sep. 2015.
K. Sato, Y. Mori, H. Hasegawa, K. Sato, “Cost Effective and Resilient Optical Network that Offers Seamless Network Expansion via Subsystem Modular OXCs and Inter-node Interconnection Optimization,” Photonics in Switching, WeIII3-3, Florence, September, 2015.
K. Sato, “Large Port Count Optical Switch Systems for Future Datacenters,” Photonics in Switching, FrII2-1, Florence, September, 2015.
M. Niwa, Y. Mori, H. Hasegawa, K. Sato, “Highly Scalable and Compact ROADM Architecture that Exploits MxN Wavelength Selective Switches,”Photonics in Switching, WeII3-2, September, 2015.
Y. Terada, Y. Mori, H. Hasegawa, K. Sato and T. Tanaka, “Evaluation of Frequency Utilization Enhancement with Transmission-Characteristics-Aware Grouped Optical Path Routing,”Photonics in Switching, SC4-2, September, 2015.
S. Deb, H. Hasegawa, Y. Mori, and K. Sato, “Impairment-aware optical multicast tree design with modulation format optimization” Photonics in Switching, paper SC4-1, Florence,Italy,Sep. 2015.
Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Novel Network Control Scheme that Can Substantially Reduce Link and Node Costs Simultaneously,” ECOC2015, We.4.5.5, September, 2015.
T. Ishikawa, Y. Mori, H. Hasegawa and K. Sato, “Shared Protected Grouped Optical Path Routing Network Design Employing Iterative Path Group Relocation,”in Reliable Networks Design and Modeling, October, 2015.
K. Ishii, J. Kurumida, K. Sato, T. Kudoh, and S. Namiki, “Energy consumption of data communication network in Japan estimated with top-down and bottom-up approach,” International Symposium on VICTORIES 2015, Akihabara, November, 2015.
K. Sato, “Development of Large Capacity Future Optical Networks,” 10th International Workshop on Optical Signal Processing and Optical Switching, IWOO 2015, Beijin, China, November, 2015.
K. Sato, “How Can Optical Technologies Compensate the Imminent Demise of Moore’s Law? “ 2015 IEIE Fall Conference, Oak Valley, Wonju-si, Korea. November, 2015.