Nagoya University Sato/Hasegawa Laboratory

1. S. Kakehashi, H. Hasegawa, K. Sato, O. Moriwaki, and S. Kamei, "Analysis and development of fixed and variable waveband MUX/DEMUX utilizing AWG routing functions," IEEE JLT, vol. 27, No. 1, January 2009, pp. 30-40.
2. K. Sato and H. Hasegawa, "Optical networking technologies that will create future bandwidth abundant networks," Journal of Optical Communications and Networking, Special Issue on Optical Networks for Future Internet, vol. 1, No. 2, July 2009, pp. A81-A93.
3. Y. Yamada, H. Hasegawa, and K. Sato, "Hierarchical optical path network design algorithm considering waveband protection," Journal of Lightwave Technology, vol. 27, No. 24, Dec. 2009, pp. 5736-5748.

1. M. Nakagawa, H. Hasegawa, K. Sato, R. Sugiyama, T. Takeda, E. Oki, and K. Shiomoto, "New dynamic network design and provisioning algorithms for broadband connection services considering fairness," ONDM 2009 (13th Conference on Optical Network Design and Modeling), Braunschweig, Germany, February 18-20, 2009, Paper #1569164809.
2. Y. Yamada, H. Hasegawa and K. Sato, "Survivable hierarchical optical path networks employing waveband and wavelength path protection," OFC 2009, OWY3, San Diego, March 22-26, 2009.
3. K. Ishii, H. Hasegawa, K. Sato, M. Okuno, S. Kamei, and H. Takahashi, "An Ultra-compact Waveband Cross-connect Switch Module to Create Cost-effective Multi-degree Reconfigurable Optical Node," ECOC 2009 -35th European Conference on Optical Communication, Vienna, Austria, September 20-24, 2009, 4.2.2.
4. K. Ishii, O. Moriwaki, H. Hasegawa, K. Sato, Y. Jinnouchi, M. Okuno, and H. Takahashi, "Efficient ROADM-ring Connecting Node Switch Architecture that Utilizes Waveband Routing and its Realization with PLC Technologies," ECOC 2009 (35th European Conference on Optical Communication), Vienna, Austria, September 20-24, 2009, 5.3.1.
5. K. Ishii, H. Hasegawa, K. Sato, "Route and Wavelength/Waveband Assignment for Creation of Compact Hierarchical Optical Cross-Connect for Multi-Ring Connection," ECOC 2009 - 35th European Conference and Exhibition on Optical Communication, Vienna, Austria, September 20-24, 2009, 4.6.2.
6. K. Sato, "Future high-bandwidth demand services and network trend," OECC 2009 (14th Optoelectronics and Communications Conference), Workshop, Hong Kong, July 13, 2009.
7. K. Sato, "The Future optical network," IEEE Photonics Society Summer Topicals 2009, Newport Beach, California, July 20-22, 2009.
8. K. Sato, "Future directions of optical networking technology development -Optical fast circuit switching and multilevel optical routing," Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, WeII1-2.
9. L. H. Chau, H. Hasegawa and K. Sato, "Hierarchical optical path network design algorithm that can best utilize WSS/WBSS based cross-connects," Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, ThII2-3.
10. S. Mitsui, H. Hasegawa and K. Sato, "Low loss and cost-effective hierarchical optical path cross-connect switch architecture based on WSS/WBSS," Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, FrII2-3.
11. R. Hirako, K. Ishii, H. Hasegawa, K. Sato, and O. Moriwaki, "Hierarchical optical cross-connect architecture that implements colorless waveband Add/Drop ratio restriction utilizing a novel wavelength multi/demultiplexers," Photonics in Switching 2009, Pisa, Italy, September 16-19, 2009, FrII2-2.
12. H. Ito, H. Hasegawa, and K. Sato, "Impact of path granularity and operation interval on dynamic path network control," ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
13. T. Ogawa, Y. Yamada, H. Hasegawa, K. Sato, "Evaluations on Physical and Optical Path Level Hierarchical Networks to Implement Optical Fast Circuit Switching," ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
14. Y. Yamada, H. Hasegawa, and K. Sato, "Impact of waveband capacity on protected hierarchical optical path networks," ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.
15. K. Shimada, S. Araki, H. Hasegawa, and K. Sato, "A dynamic routing algorithm for multi-domain photonic networks using averaged link load information," ACP 2009 (Asia Communications and Photonics Conference and Exhibition 2009), November 2-6, 2009, Shanghai, China.

1. H. Ishikawa, S. Namiki, T, Kudho, K. SATO, T. Yamamoto, M. Jinno, T. Yagi, N. Shiga, “Development of Technologies toward Ultra-low Energy Consuming Networks,” IEICE Technical Report, vol. 108, No. 409, AI2008-56, pp. 49-52, January 2009． (in Japanese)
2. K. Ishii, H. Hasegawa, K. Sato, S. Kamei, H. Takahashi, and M. Okuno, "Monolithically integrated waveband selective switch using cyclic AWGs," IEICE Photonic Network Technical Group Student Workshop, Okinawa, pp. 1-3, March, 2009．(in Japanese)
3. K. Nakano, Y. Yamada, H. Hasegawa, K. Sato, "Cost reduction by waveband and wavelength conversion in hierarchical optical path networks," IEICE Photonic Network Technical Group Student Workshop, Okinawa, pp. 31-35, March 9-10, 2009． (in Japanese)
4. K. Sato, “Activities of New Generation Network Section meeting and future network technologies” Keihanna Information and Communications Open Laboratories Workshop 2009, Kyoto, March 6, 2009. (in Japanese)
5. K. Sato, “Photonic network technologies enabling green networks,” IEICE Tokai Branch 2009 Technical School, Nagoya, March 13, 2009. (in Japanese)
6. L. H. Chau, H. Hasegawa, K. Sato, “Cost evaluation of hierarchical optical path networks applying waveband add/drop ratio constraint to each waveband,” IEICE General Conference 2009, B-12-1, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
7. K. Ishii, H. Hasegawa and K. Sato, O. Moriwaki, H. Takahashi, and M. Okuno, “Functional devices utilizing AWGs for development of hierarchical optical path node,” IEICE General Conference 2009, C-3-28, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
8. Y. Yamada, H. Hasegawa, K. Sato, “Cost reduction in survivable hierarchical optical path networks employing wavelength path protection,” IEICE General Conference 2009, B-12-4, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
9. K. Obara, H. Hasegawa, K. Sato, “Network Performance Analysis of Optical Path Dynamic Routing Algorithm Employing Traffic Prediction,” IEICE General Conference 2009, B-7-33, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
10. R. Hirako, H. Hasegawa, K. Sato, “Hierarchical optical cross-connect architecture with colorless waveband add/drop ratio restriction and its switch scale evaluation,” IEICE General Conference 2009, B-12-2, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
11. H. Ito, H. Hasegawa, K. Sato, “Effect of path granularity on dynamic path network control,” IEICE General Conference 2009, B-7-80, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
12. K. Shimada, S. Araki, H. Hasegawa, K. Sato, “A efficient routing algorithm for multi-domain　photonic networks based on traffic congestion information,” IEICE General Conference 2009, B-7-82, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
13. T. Ogawa, Y. Yamada, H. Hasegawa, K. Sato, “Multi-Layered Segmented Optical Path Network Utilizing Waveband,” IEICE General Conference 2009, B-12-3, March 17-20, 2009, Matsuyama, Japan. (in Japanese)
14. K. Sato, “Photonic network technologies that lead to green ICT,” Optical Fiber Application Exhibition 2009, Optical Fiber Technology Special Seminar, Yokohama, April 24, 2009. (in Japanese)
15. K. Sato, “Next generation photonic platform” Broadband and Global Special Seminar, Tokyo, May 21, 2009, pp. 1-40. (in Japanese)
16. K. Ishii, H. Hasegawa, K. Sato, S. Kamei, M. Okuno, and H. Takahashi, “One-chip interleaved waveband selective switch using cyclic AWGs,” IEICE Technical Report, PN2009-16 (2009-8), pp. 31-35, August 2009．(in Japanese)
17. Y. Yamada, H. Hasegawa, K. Sato, “Survivable hierarchical optical path networks that utilize waveband and wavelength path protection,” IEICE Technical Report, PN2009-12 (2009-8), pp. 7-11, August 2009. (in Japanese)
18. K. Nakano, Y. Yamada, H. Hasegawa, K. Sato, “Cost Analysis of Hierarchical Optical Path Networks with Small Traffic Demand,” The TokaiBranch Conference of Electrical Engineering Related Societies 2009, O-453, September 10-11, 2009, Nagoya, Japan. (in Japanese)
19. M. Nakagawa, H. Hasegawa, K. Sato, R. Sugiyama, T. Takeda, and K. Shiomoto, “Performance evaluation of dynamic network control algorithm employing hitless rerouting,” IEICE Society Conference 2009, B-7-59, September 15-18, 2009, Niigata, Japan. (in Japanese)
20. H. Ito, H. Hasegawa, K. Sato, “Effect of traffic sampling frequency on dynamic path capacity control based on low-pass filtering,” IEICE Society Conference 2008, B-*-**, September 15-18, 2009, Niigata, Japan. (in Japanese)
21. H-C. Le, H. Hasegawa, and K. Sato, " Hierarchical Optical Path Network Design Considering Waveband Add/Drop Ratio Restriction and Network Cost Analysis on Different Network Parameters," IEICE Technical Report, vol. 108, No. 423, OCS2008-109, pp. 13-18, February 2009.