Achievements

Journal

2022

  • T. Kuno, Y. Mori, S. Subramaniam, M. Jinno, and H. Hasegawa,"Design and evaluation of a reconfigurable optical add-drop multiplexer with flexible wave-band routing in SDM networks," IEEE/Optica Journal of Optical Communications and Networking, vol. 14, No. 4, pp. 248-256, April 2022.

2021

  • R. Shiraki, Y. Mori, H. Hasegawa, K. Sato, and P. Monti, “Design and control of highly spectrally efficient photonic networks enabled by fiber-granular routing on overlaid ring-shaped topologies,” IEEE/OSA Journal of Optical Communications and Networking, vol. 13, no. 11, pp. 233-243, November 2021.
  • Y. Mori and K. Sato, “High-port-count optical circuit switches for intra-datacenter networks [Invited Tutorial],” IEEE/OSA Journal of Optical Communications and Networking, vol. 13, no. 8, pp. D43-D52, August 2021. Invited tutorial
  • K. Okamura, Y. Mori, and H. Hasegawa, “Pre-filtering techniques for spectrum narrowing caused by optical node traversal in ultra-dense WDM networks,” IEEE Photonics Journal, vol. 13,  no. 2, #7200513, April 2021.
  • R. Matsumoto, T. Inoue, R. Konoike, H. Matsuura, K. Suzuki, Y. Mori, K. Ikeda, S. Namiki, and K. Sato, “Scalable and fast optical circuit switch based on colorless coherent detection: Design principle and experimental demonstration,” IEEE/OSA Journal of Lightwave Technology, vol. 39, no. 8, pp. 2263-2274, April 2021.

2020

  • M. Ganbold, T. Yasuda, Y. Mori, H. Hasegawa, F. Inuzuka, A. Hirano, and K. Sato, “Assessment of optical node architectures for building next generation large bandwidth networks,” IEICE Transactions on Communications, vol. E103-B, no. 6, pp. 679-689, June 2020.
  • K. Kayano, Y. Mori, H. Hasegawa, K. Sato, S. Oda, S. Yoshida, and T. Hoshida, “Transmission-quality-aware online network design and provisioning enabled by optical performance monitoring,” IEICE Transactions on Communications, vol. E103-B, no.6, pp.670-678, June 2020.
  • R. Hashimoto, Y. Mori, H. Hasegawa, and K. Sato, “Design of seamlessly and limitlessly expandable OXC and verification tests on its versatile applicability,” IEEE/OSA Journal of Optical Communications and Networking, vol. 12, no. 5, pp. 99-108, March 2020.
  • Y. Mori, E. Honda, R. Shiraki, K. Suzuki, H. Matsuura, H. Kawashima, S. Namiki, K. Ikeda, and K. Sato, “Wavelength-division demultiplexing enhanced by silicon-photonic tunable filters in ultra-wideband optical-path networks,” IEEE/OSA Journal of Lightwave Technology, vol. 38, no. 5, pp. 1002-1009, March 2020.
  • Y. Ito, Y. Mori, H. Hasegawa, and K. Sato, “Architecture and design of coarse/fine hybrid granular routing optical networks,” IEICE Transactions on Communications, vol. E103.B, no.2, pp. 118-129, February 2020.

2019

  • H. Takeshita, K. Matsumoto, H. Hasegawa, K. Sato, and E. L. Taillandier de Gabory, “Improved optical amplification efficiency by using turbo cladding pumping scheme for multicore fiber optical networks,” IEICE Transactions on Communications, vol. E102.B, no. 8, pp. 1579-1589, August 2019.
  • R. Shiraki, Y. Mori, H. Hasegawa, and K. Sato, “Design and evaluation of quasi-Nyquist WDM networks utilizing widely deployed wavelength-selective switches,” OSA Optics Express, vol. 27, issue 13, pp. 18549-18560, June 2019.
  • S. Yamakami, Y. Mori, H. Hasegawa, K. Sato, F. Inuzuka, A. Hirano, “Assessment of node- and link- level blocking and creating cost-effective networks in the era of large bandwidth services,” IEICE TRANSACTIONS on Communications, vol. E102.B, no. 3, pp. 510-521, March 2019.
  • S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato, “Digital post-processing against inline spectrum narrowing caused by optical node traversals,” IEICE Communication Express, vol. 8, no. 4, pp. 93-98, January 2019.
  • K. Kayano, S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato, “Highly dense elastic optical networks enabled by grouped routing with distance-adaptive modulation,” IEEE Photonics Technology Letters, vol. 31, issue 4, pp. 295-298, January 2019.
  • Y. Mori, M. Ganbold, K. Sato, “Design and evaluation of optical circuit switches for intra-datacenter networking,” IEEE/OSA Journal of Lightwave Technology, vol. 37, issue 2, pp. 330-337, January 2019. Invited paper
  • K. Kayano, Y. Mori, H. Hasegawa, K. Sato, S. Oda, S. Yoshida, and T. Hoshida, “Effectiveness of transmission-quality-aware online network design and provisioning enabled through optical performance monitoring,” IEICE Communications Express, vol. 8, no. 4, pp. 81-86, January 2019.

2018

  • M. Ganbold, H. Nagai, Y. Mori, K. Suzuki, H. Matsuura, K. Tanizawa, K. Ikeda, S. Namiki, H. Kawashima, and K. Sato, “A large-scale optical circuit switch using fast wavelength-tunable and bandwidth-variable filters”, IEEE Photonics Technology Letters, vol. 30, issue. 16, pp. 1439-1442, August 2018.
  • J. Wu, M. Xu, S. Subramaniam, and H. Hasegawa, “Joint banding-node placement and resource allocation for multigranular elastic optical networks,” IEEE/OSA Journal of Optical Communications and Networking, vol.10, issue 8, August 2018.
  • H. Nagai, Y. Mori, H. Hasegawa, and K. Sato, “Design and verification of large-scale optical circuit switch using ULCF AWGs for datacenter application,” OSA/IEEE Journal of Optical Communications and Networking, vol. 10, issue 7, pp. B82-B89, July 2018.
  • R. Hashimoto, S. Yamaoka, Y. Mori, H. Hasegawa, K. Sato, K. Yamaguchi, K. Seno, and K. Suzuki, “First demonstration of subsystem-modular optical cross-connect using single-module 6 × 6 wavelength-selective switch,” IEEE/OSA Journal of Lightwave Technology, vol. 36, issue 7, pp. 1435-1442, April 2018. Invited paper
  • H. Takeshita, T. Oguma, S. Fujisawa, Y. Suzuki, B. Yatabe, A. Tajima, H. Hasegawa and K. Sato, “Enhancing protection performance by effectively using spectral slots of impairment-aware elastic optical networks,” OSA/IEEE Journal of Optical Communications and Networking, vol. 10, issue 1, pp. A91-A101, January 2018.

2017

  • K. Ueda, Y. Mori, H. Hasegawa, H. Matsuura, K. Ishii, H. Kuwatsuka, S. Namiki, T. Watanabe, and K. Sato, “Fast optical circuit switch for intra-datacenter networking,” IEICE Transactions on Communications E100-B, pp. 1740-1746, October 2017. Invited paper
  • T. Ishikawa, Y. Mori, H. Hasegawa, and K. Sato, “Spectral efficiency maximization of grouped routing optical networks with shared protection,” OSA/IEEE Journal of Optical Communications and Networking 9, pp. 864-875, October 2017.
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Large-scale optical node utilizing MxM WSSs optimally configured for traffic distribution,” IEEE Photonics Technology Letters 29, pp. 1293-1296, August 2017.
  • S. Yamakami, Y. Mori, H. Hasegawa, and K. Sato, “Highly reliable and large-scale subsystem-modular optical cross-connect,” OSA Optics Express 25, pp. 17982-17994, July 2017.
  • T. Ishikawa, Y. Mori, H. Hasegawa, S. Subramaniam, K. Sato, and O. Moriwaki, “Compact OXC architecture, design and prototype development for flexible waveband routing optical networks,” OSA Optics Express 25, pp. 15838-15853, July 2017.
  • M. Nakagawa, H. Hasegawa, and Ken-ichi Sato, “Dynamic path provisioning and disruption-free reoptimization algorithms for bandwidth on-demand services considering fairness,” IEICE Transactions on Communications E100-B, pp. 536-547, April 2017.
  • K. Sato, Y. Mori, H. Hasegawa, and K. Sato, “Algorithm for raising OXC port count to meet traffic growth at minimum cost,” OSA/IEEE Journal of Journal of Optical Communications and Networking 9, pp. A263-A270, Feb. 2017. Selected paper
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Tipping point for the future scalable OXC: what size MxM WSS is needed?,” OSA/IEEE Journal of Optical Communications and Networking 9, pp. A18-A25, Feb. 2017. Selected paper
  • K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, “Large-scale optical switch utilizing multistage cyclic arrayed-waveguide gratings for intra-datacenter interconnection,” IEEE Photonics Journal 9, Article 7800412, Feb. 2017.

2016

  • H. Kawase, Y. Mori, H. Hasegawa, and K. Sato, “Dynamic router performance control utilizing support vector machines for energy consumption reduction,” IEEE Transactions on Network and Service Management 13, pp. 860-870, December 2016.
  • H. Hasegawa, S. Subramaniam, and K. Sato, “Node architecture and design of flexible waveband routing optical networks,” IEEE/OSA Journal of Optical Communications and Networking, vol. 8, issue 10, October 2016.
  • K. Sato, H. Hasegawa, and K. Sato, “Disruption-free expansion of protected optical path networks that utilize subsystem modular OXC nodes,” IEEE/OSA Journal of Optical Communications and Networking, vol. 8, issue 7, July 2016.
  • H. Hasegawa, Y. Mori, and K. Sato, “Survivable grouped routing optical networks with dedicated path protection,” IEICE Transactions on Communications E99-B, pp.1435-1444, July 2016.
  • Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Highly spectral efficient networks based on grouped optical path routing,” OSA Optics Express 24, pp. 6213-6228, March 2016.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, T. Watanabe, “Large-scale and simple-configuration optical switch enabled by asymmetric-port-count subswitches,” IEEE Photonics Journal 8, Article 0601610, March 2016. Top-scoring paper
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Novel optical-node architecture utilizing asymmetric-multiport wavelength-selective switches,” IEEE Photonics Journal 8, Article 0601210 March 2016. Top-scoring paper
  • K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, “Large-scale optical-switch prototypes utilizing cyclic arrayed-waveguide gratings for datacenters,” IEEE/OSA Journal of Lightwave Technology 34, pp. 608-617, January 2016. Top-scoring paper
  • J. Wu, S. Subramaniam, and H. Hasegawa, “Optimal nonuniform wavebanding in WDM mesh networks,” Springer Photonic Network Communications, vol. 31, pp. 376–385, November 2016.

2015

  • 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 Transactions on Communications, vol. E98-B, issue 11, pp. 2151-2159, November 2015.
  • A. Kadohata, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato, “Pre-adjustment rerouting for wavelength defragmentation in optical transparent WDM networks,” IEICE Transactions on Communications, vol. E98-B, issue 10, pp. 2014-2021, October 2015.
  • Y. Tanaka, H. Hasegawa, and K. Sato, “Criteria for selecting subsystem configuration in creating large-scale OXCs, IEEE/OSA Journal of Optical Communications and Networking, vol. 7, issue 10, pp. 1009-1017, October 2015.
  • Y. Tanaka, H. Hasegawa, and K. Sato, “Performance analysis of large-scale OXC that enables dynamic modular growth,” OSA Optics Express, vol. 23, issue 25, pp. 5994-6006, February 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,” OSA Optics Express 23, pp. 14796-14805, May 2015.
  • 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,” IEEE/OSA Journal of Optical Communications and Networking, vol. 7, issue 6, pp. 586-595, June 2015.
  • 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,”
  • IEEE/OSA Journal of Optical Communications and Networking, vol. 7, issue 4, pp. 235-247, April 2015.
  • S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Wavelength-tunable filters utilizing arrayed waveguide gratings for colorless/directionless/contentionless optical signal drop in ROADMs,” IEEE Photonics Journal 7, article 7100511, February 2015.

2014

  • H.C-. Le, H. Hasegawa, and K. Sato, “Performance evaluation of large-scale multi-stage hetero-granular optical cross-connects,” OSA Optics Express, vol. 22, issue 3, pp. 3157-3168, February 2014.
  • Z. Shen, H. Hasegawa, K. Sato, T. Tanaka, and A. Hirano, “A novel elastic optical path network that utilizes bitrate-specific anchored frequency slot arrangement,” OSA Optics Express, vol. 22, issue 3, pp. 3169-3179, February 2014.
  • Md. S. Faruk, Y. Mori, and K. Kikuchi, “In-band estimation of optical signal-to-noise ratio from equalized signals in digital coherent receivers,” IEEE Photonics Journal 6, article 7800109, February 2014.
  • H.C-. Le, H. Hasegawa, and K. Sato, “Large capacity optical networks applying multi-stage hetero-granular optical path routing,” Elsevier Optical Switching and Networking, vol. 11, part A, pp. 105-112, January 2014.

2013

  • Z. Shen, H. Hasegawa, and K. Sato, “Effectiveness of wavelength/waveband conversion and its allowable cost bound for hierarchical optical path networks,” IEEE/OSA Journal of Optical Communications and Networking, vol. 5, issue 11, pp. 1262-1274, November 2013.
  • K. Sato, H. Hasegawa, T. Niwa, and T. Watanabe, “A large-scale wavelength routing optical switch for data center networks,” IEEE Communications Magazine, vol. 51, issue 9, pp. 46-52 September 2013.
  • Z. Shen, H. Hasegawa, and K. Sato, “An efficient heuristic waveband assignment algorithm for hierarchical optical path networks utilizing wavelength convertors,” Elsevier Optical Switching and Networking, vol. 10, issue 1, pp. 54-61, January 2013.
  • Y. Iizawa, S. Araki, S. Ishida, I. Nishioka, K. Shimada, H. Hasegawa, and K. Sato, “PCE-based fast path control in multi-domain photonic networks,” Elsevier Optical Switching and Networking, vol. 10, issue 1, pp. 32-43, January 2013.
  • Y. Taniguchi, H. Hasegawa, and K. Sato, “Coarse granular optical routing networks utilizing fine granular add/drop,” IEEE/OSA Journal of Optical Communications and Networking, vol. 5, issue 7, pp. 774-783, July 2013.
  • T. Ban, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno, “Performance evaluation of large capacity ultra-compact waveband cross-connect,” IEEE Photonic Technology Letters, vol. 25, issue 5, pp. 446-449, March 2013.
  • M. Sato, H. Hasegawa, and K. Sato, “Efficient shared protection network design algorithm that iterates path relocation with new resource utilization metrics,” IEICE Transactions on Communications, vol. E96-B, issue 4, pp. 956-966, April 2013.
  • Y. Iwai, H. Hasegawa, and K. Sato, “A large-scale photonic node architecture that utilizes interconnected OXC subsystems,” OSA Optics Express, vol. 21, no. 1, pp. 478-487, January 2013.
  • T. Ban, H. Hasegawa, K. Sato, T. Watanabe, and H. Takahashi, “A novel large-scale OXC architecture and an experimental system that utilizes wavelength path switching and BER selection,” OSA Optics Express, vol. 21, issue 1, pp. 469-477, January 2013.

International conference

2022

  • K. Cruzado, R. Shiraki, Y.Mori, T. Tanaka, K. Higashimori, F. Inuzuka, T. Ohara, and H. Hasegawa, "Reinforcement-Learning-based Network Design and Control with Stepwise Reward Variation and Link-Adjacency Embedding," European Conference on Optical Communications (ECOC 2022), paper We2B.3, Basel, Switzerland, September 2022.
  • T. Mitusya, T. Ochiai, T. Kuno, Y. Mori, H. Hasegawa and K. Sato, "Highly Reliable and Large-Scale Optical Switch for Intra-Datacentre Networks," European Conference on Optical Communications (ECOC 2022), paper We5.49, Basel, Switzerland, September 2022.
  • J. Sakano, R. Shiraki, Y. Mori, and H. Hasegawa “Constellation-Shaped 64QAM Robust against Phase Noise in Intra-Datacenter Networks,” Opto-Electronics and Communications Conference/International Conference on Photonics in Switching and Computing (OECC/PSC 2022), paper WF3-4, Toyama, Japan, July 2022.
  • N. Tsuchida, T. Kuno, J. Sakano, Y. Mori, and H. Hasegawa, “Optical Performance Monitoring Using Adaptive FIR Filters for Constellation-Shaped Higher-Order QAM Signals,” Opto-Electronics and Communications Conference/International Conference on Photonics in Switching and Computing (OECC/PSC 2022), paper ME1-5, Toyama, Japan, July 2022.
  • T. Kuno, T. Mitsuya, Y. Mori, and H. Hasegawa, and K. Sato, “Demonstration of High-Throughput Intra-Datacenter Switches Using Interleaved AWGs for Nyquist WDM,” Optica 2022 Optical Fiber Communication Conference and Exposition (OFC), San Diego, USA, paper Th3A.2, March, 2022.
  • T. Matsuo, R. Shiraki, Y. Mori, and H. Hasegawa, “Design and Dynamic Control of Fiber-Granular Routing Networks with Next-Generation Optical Paths,” Optica 2022 Optical Fiber Communication Conference and Exposition (OFC), San Diego, USA, paper W3F.6, March, 2022.
  • N. Tsuchida, T. Kuno, Y. Mori, and H. Hasegawa, “Measurement Method of Transmitter IQ Imbalance in Digital Coherent Communication Systems,” The international society for optics and photonics (SPIE 2022), paper 12027-12, San Francisco, USA, February 2022.

2021

  • Y. Wang, Y. Mori, and H. Hasegawa, “Dynamic Routing and Spectrum Allocation Based on Actorcritic Learning for Multi-fiber Elastic Optical Networks,” OSA Photonics Switching and Computing (PSC), paper W1B.3, Optica Virtual Event, September 2021.
  • J. Sakano, Y. Mori, and H. Hasegawa, “Joint Modulation/Demodulation Optimization without the Differentiable Channel Model in the Presence of Phase Noise,” OSA Photonics Switching and Computing (PSC), paper Tu5A.6, Optica Virtual Event, September 2021.
  • R. Munakata, Y. Mori, S. Subramaniam, M. Jinno, and H. Hasegawa, “Design and Performance Evaluation of Resilient Optical Path Networks That Adopt Spatially-Jointed Flexible Waveband Routing,” International Conference on Optical Network Design and Modeling (ONDM 2021), paper NPR.1, Gothenburg, Sweden, July 2021.
  • N. Tsuchida, T. Kuno, Y. Mori, and H. Hasegawa, "Measurement of Transmitter IQ Skew in High-Speed Digital Coherent Communication Systems," Opto-Electronics and Communications Conference (OECC 2021), paper T4B.7, Hong Kong, China, July 2021.
  • T. Matsuo, R. Shiraki, Y. Mori, and H. Hasegawa, "Performance Evaluation of Dynamic Fiber-Granular Routing Networks with Next-Generation Optical Paths," Opto-Electronics and Communications Conference (OECC 2021), paper T2A.8, Hong Kong, China, July 2021.
  • N. Tsuchida, T. Kuno, Y. Mori, and H. Hasegawa, “Estimation for IQ skew of a transmitter in digital coherent communication systems,” 2021 Conference on Lasers and Electro-Optics/Europe – European Quantum Electronics Virtual Conferences (CLEO®/Europe-EQEC 2021), paper CI-2.5, Munich, Germany, June 2021.
  • T. Kuno, Y. Mori, S. Subramaniam, M. Jinno, and H. Hasegawa, “Experimental Evaluation of Optical Cross-Connects with Flexible Waveband Routing Function for SDM Networks,” OSA Optical Fiber Communication Conference (OFC 2021), paper Th4E.3, San Diego, USA, June 2021.
  • T. Kuno, Y. Mori, H. Hasegawa,"Evaluation of low-complexity digital coherent receivers for short-reach transmission systems," The International Society for Optics and Photonics (SPIE 2021), paper 11712-9, San Francisco, USA, March, 2021.

2020

  • Y. Mori and K. Sato, “Large-Scale Optical Switch Architectures for Intra-Datacentre Networks,” European Conference on Optical Communications (ECOC 2020), paper Tu5J-1, Brussels, Belgium, December 2020. (Invited tutorial talk)
  • K. Okamura, Y. Mori, and H. Hasegawa, “Joint pre-emphasis and partial-response coding for spectrum narrowing caused by repeated optical-node traversal in ultra-dense WDM networks,” European Conference on Optical Communications (ECOC 2020), paper Mo2D-8, Brussels, Belgium, December 2020.
  • E. Honda, Y. Mori, H. Hasegawa, and K. Sato, “Demonstration of 4.3 Pbps Optical Circuit Switching for Intra-Datacentre Networks Based on Spatial Super-Channels,” European Conference on Optical Communications (ECOC 2020), paper Th1J-1, Brussels, Belgium, December 2020.
  • R. Matsumoto, R. Konoike, H. Matsuura, K. Suzuki, T. Inoue, Y. Mori, K. Ikeda, S. Namiki, and K. Sato, “Large-Scale and Fast Optical Circuit Switch for Coherent Detection Using Tunable Local Oscillators Formed with Wavelength Bank and Widely-Tunable Silicon Ring Filters,” European Conference on Optical Communications (ECOC 2020), paper Th1J-2, Brussels, Belgium, December 2020.
  • E. Honda, Y. Mori, H. Hasegawa, and K. Sato, “Evaluation of Optical Circuit Switches for SDM-Based Intra-Datacenter Networks,” OptoElectronics and Communications Conference (OECC 2020), T1-3.4, Taipei, Taiwan, October 2020.
  • Y. Wang, Y. Mori, and H. Hasegawa, “Resource Assignment based on Core-State Value Evaluation for Crosstalk and Spectrum fragments in SDM Elastic Optical Networks,” Opto-Electronics and Communications Conference (OECC 2020), paper T8-2.6, Taipei, Taiwan, October 2020.
  • T. Kuno, Y. Mori and H. Hasegawa, "Low-Complexity DSP Configuration for Short-Reach Transmission Systems," Opto-Electronics and Communications Conference (OECC 2020), paper VP95, Taipei, Taiwan, October 2020.
  • T. Kuno, Y. Mori and H. Hasegawa, "Low-Complexity Digital Coherent Receivers for Short-Reach Transmission Systems," 2020 IEEE Photonics Conference (IPC), paper WG2.2, Vancouver, BC, Canada, October 2020.
  • T. Kuno, Y. Mori, S. Subramaniam, M. Jinno, and H. Hasegawa, “High-Throughput and High-Port-Count Optical Cross-Connents Using Flexible Waveband Routing,” International Conference on Optical Network Design and Modeling (ONDM 2020), paper S6.4, Barcelona, Spain, May 2020.
  • R. Shiraki, Y. Mori, H. Hasegawa, K. Sato, and P. Monti, “Highly spectrally efficient metro networks that adopt fiber-level granular routing on overlaid line-/ring-shaped virtual topologies,” The international society for optics and photonics (SPIE 2020), paper 10308-17, San Francisco, USA, Feb. 2020.
  • K. Okamura, Y. Mori, H. Hasegawa, and K. Sato, “Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping,” The international society for optics and photonics (SPIE 2020), paper 10308-12, San Francisco, USA, Feb. 2020.
  • T. Kuno, Y. Mori, and H. Hasegawa, “A 2.15 Pbps throughput optical cross-connect with flexible waveband routing,” IEEE International Conference on Photonics, paper D1AM-S3, Kelantan, Malaysia, March 2020.
  • E. Honda, Y. Mori, H. Hasegawa, and K. Sato, “High-throughput optical circuit switch for intra-datacenter networks based on spatial super-channels” OSA Optical Fiber Communication Conference (OFC 2020), paper W1F.2, San Diego, USA, March 2020.
  • R. Shiraki, Y. Mori, H. Hasegawa, and K. Sato, “Dynamically controlled flexible-grid networks based on semi-flexible spectrum assignment and network-state-value evaluation,” OSA Optical Fiber Communication Conference (OFC 2020), paper M1B.4, San Diego, USA, March 2020.
  • R. Matsumoto, T. Inoue, R. Konoike, H. Matsuura, K. Suzuki, Y. Mori, K. Ikeda, S. Namiki, and K. Sato, “Scalable and fast optical circuit switch created with silicon-photonic tunable-filter-based local oscillator bank and colorless coherent detection,” OSA Optical Fiber Communication Conference (OFC 2020), paper W2A.36, San Diego, USA, March 2020.

2019

  • Y. Mori “Ultra-wideband ROADM” Workshop on Ultra-Wideband Communications, European Conference on Optical Communication (ECOC 2019), Dublin, Ireland, September 2019. Invited talk
  • E. Honda, Y. Mori, H. Hasegawa, and K. Sato, “Intra- and inter-datacentre converged networks utilising Kramers-Kronig receivers,” European Conference on Optical Communication (ECOC 2019), paper Th.1.A.5, Dublin, Ireland, September 2019.
  • R. Shiraki, Y. Mori, H. Hasegawa, and K. Sato, “Dynamic control of transparent optical networks with adaptive state-value assessment enabled by reinforcement learning,” International Conference on Transparent Optical Networks (ICTON 2019), paper Sa.A3.4, Angers, France, July 2019. Best student oral presentation award
  • E. Honda, Y. Mori, H. Hasegawa, and K. Sato, “Feasibility test of large-scale (1,424×1,424) optical circuit switches utilizing commercially available tunable lasers,” OptoElectronics and Communications Conference / International Conference on Photonics in Switching and Computing (OECC/PSC 2019), paper WA1-3, Fukuoka, Japan, July 2019.
  • K. Okamura, S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato, “Evaluation of WSS Characteristics in highly dense WDM networks,” OptoElectronics and Communications Conference / International Conference on Photonics in Switching and Computing (OECC/PSC 2019), paper MF2-5, Fukuoka, Japan, July 2019.
  • Y. Mori, H. Hasegawa, and Ken-ichi Sato, “High-port-count optical cross-connect using single-module M×M wavelength-selective switches,” International Symposium on Extremely Advanced Transmission Technologies (EXAT 2019), Ise, Japan, May 2019. Invited talk
  • R. Shiraki, Y. Mori, H. Hasegawa, and K. Sato, “Quasi-Nyquist WDM networks using widely deployed wavelength-selective switches,” International Symposium on Extremely Advanced Transmission Technologies (EXAT 2019), Ise, Japan, May 2019.
  • K. Itakura, Y. Mori, H. Hasegawa, and K. Sato, “Design of survivable coarse/fine hybrid granular routing optical networks based on iterative path-pair-loop inflation,” International Conference on the Design of Reliable Communication Networks (DRCN 2019), Coimbra, Portugal, March 2019.
  • R. Hashimoto, Y. Mori, H. Hasegawa, and K. Sato, “Verification of high performance and wide applicability of seamlessly expandable and limitless OXC,” OSA Optical Fiber Communication Conference (OFC 2019), paper W2A.24, San Diego, USA, March 2019.
  • R. Shiraki, Y. Mori, H. Hasegawa, and K. Sato, “Demonstration of quasi-Nyquist WDM networks using widely deployed wavelength-selective switches,” OSA Optical Fiber Communication Conference (OFC 2019), paper M1A.7, San Diego, USA, March 2019.
  • R. Shiraki, S. Yamaoka, Y. Mori, H. Hasegawa, K. Sato, “Novel network architecture enabling quasi-Nyquist wavelength-division multiplexing,” The international society for optics and photonics (SPIE 2019), paper 10946-11, San Francisco, USA, Feb. 2019.

2018

  • S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato, “Novel demodulation framework based on quadrature duo-binary/quaternary/octernary spectrum shaping and MLSE for mitigating spectrum narrowing caused by node traversals,” European Conference on Optical Communication (ECOC), paper Mo4F.5, Rome, Italy, September 2018.
  • Y. Mori, M.-E. Ganbold, R. Shiraki, K. Suzuki, H. Matsuura, H. Kawashima, S. Namiki, K. Ikeda, and K. Sato “Fast optical circuit switch using monolithically integrated silicon-photonic space switch and wavelength-tuneable filter,” European Conference on Optical Communication (ECOC), paper Mo3H.4, Rome, Italy, September 2018.
  • K. Kayano, Y. Mori, H. Hasegawa, K. Sato, F. Inuzuka, A. Hirano, “A new framework for nation-wide networking in future datacenter-traffic centric era” OSA Photonics Switching and Computing (PSC), paper Fr3A.5, Limassol, Cyprus, September 2018.
  • R. Shiraki, Y. Mori, H. Hasegawa, K. Sato, “Architecture and design of quasi-Nyquist WDM networks with flexible grid granular switching” OSA Photonics Switching and Computing (PSC), paper Fr3A.5, Limassol, Cyprus, September 2018.
  • S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato, “Novel FM-Noise spectrum measurement based on three-wave interference,” Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR), paper W4I.7, Hong Kong, China, July 2018.
  • S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato, “Novel demodulation algorithm based on duo-binary spectrum shaping and MLSE for mitigating spectrum narrowing caused by multiple node traversals,” Signal Processing in Photonic Communications (SPPCom 2018) in OSA Advanced Photonics Congress, paper SpW1G.5, Zurich, Swiss, July 2018.
  • M.-E. Ganbold, H. Nagai, Y. Mori, H. Hasegawa, and K. Sato, “1,024x1,024 optical circuit switch using wavelength-tunable and bandwidth-variable silicon photonic filter,” Photonic Networks and Devices in OSA Advanced Photonics Congress, paper SpW1G.5, Zurich, Swiss, July 2018. Best Student Paper Award 1st Prize
  • J. Wu, S. Subramaniam, and H. Hasegawa, “Dynamic routing and spectrum assignment for multi-fiber elastic optical networks,” OSA Advanced Photonics Congress 2018, paper NeTu4F., Zurich, Swiss, July 2018.
  • M.-E. Ganbold, T. Yasuda, Y. Mori, H. Hasegawa, and K. Sato, “Assessment of optical cross-connect architectures for the creation of next generation optical networks,” OptoElectronics and Communications Conference (OECC), paper 6A1-5, Jeju, Korea, July 2018.
  • Y. Mori, K. Ueda, K. Suzuki, H. Matsuura, K. Tanizawa, K. Ikeda, S. Namiki, H. Kawashima, and K. Sato, “Next-generation ROADM employing bandwidth-adaptive silicon-photonic filters for flexible drop operation,” OSA Optical Fiber Communication Conference (OFC 2018), paper Th3H.5, San Diego, USA, March 2018.
  • Y. Mori and K. Sato, “Large-scale optical circuit switch architecture for intra-datacenter networking,” OSA Optical Fiber Communication Conference (OFC 2018), paper Th3H.3, San Diego, USA, March 2018. Invited talk
  • K. Kayano, H. Saito, Y. Mori, H. Hasegawa, K. Sato, S. Oda, S. Yoshida, and T. Hoshida “Spectrally efficient and highly resilient grouped routing network enhanced with optical performance monitoring,” OSA Optical Fiber Communication Conference (OFC 2018), paper M3J.8, San Diego, USA, March 2018.
  • H. Hasegawa, T. Yasuda, Y. Mori, and K. Sato, “Fragmentation-minimized transponder upgrading employing channel bandwidth aligned slot allocation in flexible grid optical networks,” OSA Optical Fiber Communication Conference (OFC 2018), paper M3J.6, San Diego, USA, March 2018.
  • T. Ishikawa, Y. Mori, H. Hasegawa, and K. Sato, “Spectral utilization efficient coarse granular routing optical networks with resiliency against multiple failures,” International Conference on the Design of Reliable Communication Networks (DRCN), Paris, France, February 2018.
  • S. Yamaoka, R. Hashimoto, Y. Mori, H. Hasegawa, and K. Sato, “Large-scale optical node architecture enabling spectral-efficiency maximization in ultra-dense WDM networks,” The international society for optics and photonics (SPIE 2018), paper 10560-15, San Francisco, USA, Feb. 2018.
  • H. Nagai, Y. Mori, H. Hasegawa, and K. Sato, “Demonstration of 153.6-Tbps throughput from 1,536x1,536 optical switch with uniform-loss and cyclic-frequency AWGs,” The international society for optics and photonics (SPIE 2018), paper 10560-24, San Francisco, USA, Feb. 2018. Optical communications best technical paper award

2017

  • J. Wu, M. Xu, S. Subramaniam, and, H. Hasegawa, “Joint banding-node placement and resource allocation for multi-granular elastic optical networks,” IEEE Global Communications Conference (GLOBECOM 2017), paper 17506266, Singapore, December 2017.
  • Y. Mori, H. Hasegawa, and K. Sato, “Joint pre-, inline-, and post-compensation of spectrum narrowing caused by traversing multiple optical nodes,” European Conference on Optical Communication (ECOC 2017), paper P1.SC3.45, Gothenburg, Sweden, September 2017.
  • R. Hashimoto, S. Yamaoka, Y. Mori, H. Hasegawa, K. Sato, K. Yamaguchi, K. Seno, and K. Suzuki, “First demonstration of subsystem-modular optical cross-connect using single-module 6x6 WSS,” European Conference on Optical Communication (ECOC 2017), paper Tu.2.F.2, Gothenburg, Sweden, September 2017. Top-scoring paper
  • K. Suzuki, K. Tanizawa, S. Suda, H. Matsuura, K. Ikeda, Y. Mori, K. Sato, S. Namiki, and H. Kawashima, “Silicon photonics C-band tunable filter for large-scale optical circuit switches,” Opto-Electronics and Communications Conference and Photonics Global Conference (OECC/PGC 2017), paper P3-128, July/August 2017.
  • D. Martinez, Y. Mori, H. Hasegawa, and K. Sato, “Novel subcarrier multiplexing and subcarrier-synchronous phase estimation tolerant to laser phase noise,” OSA Signal Processing in Photonics Communications (SPPCom 2017), paper SpW1F, New Orleans, Louisiana, USA, July 2017.
  • H. Hasegawa and K. Sato, “Theory and progress of large-scale optical switching and elastically hybrid optical switching,” International Conference on Photonics in Switching, New Orleans, Louisiana, USA, July 2017. (Invited talk)
  • S. Yamaoka, Y. Mori, and K. Sato, “Novel laser-linewidth measurement based on three-wave interference using digital coherent receiver,” the Conference on Lasers and Electro-Optics/Europe and the European Quantum Electronics Conference (CLEO/Europe-EQEC 2017), paper CI-6.2, Munich, Germany, June 2017.
  • Y. Mori, K. Ueda, H. Hasegawa, and K. Sato, “Large-scale optical circuit switch architecture for intra-datacentre networking,” the Conference on Lasers and Electro-Optics/Europe and the European Quantum Electronics Conference (CLEO/Europe-EQEC 2017), paper CI-5.3, Munich, Germany, June 2017. Invited talk
  • J. Wu, M. Xu, S. Subramaniam, and H. Hasegawa, “Routing, fiber, band, and spectrum assignment (RFBSA) for multi-granular elastic optical networks,” IEEE International Conference on Communications, paper 17065729, Paris, France, May 2017.
  • Y. Mori, “Large scale optical circuit switches for future data center applications,” Workshop in International Conference on Optical Network Design and Modeling (ONDM 2017), Budapest, Hungary, May 2017. Invited talk
  • Y. Ito, Y. Mori, H. Hasegawa, and K. Sato, “Dynamic control of coarse/fine hybrid granular routing optical networks,” OSA Optical Fiber Communication Conference (OFC 2017), paper Th4F.3, Los Angeles, USA, March 2017.
  • S. Yamakami, M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Highly reliable large-scale optical cross-connect architecture utilizing MxM wavelength-selective switches,” OSA Optical Fiber Communication Conference (OFC 2017), paper Th3K.5, Los Angeles, USA, March 2017.
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Optical tunable filter for gridless ROADM,” OSA Optical Fiber Communication Conference (OFC 2017), paper Tu3F.4, Los Angeles, USA, March 2017.
  • K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, “Novel intra- and inter-datacenter converged network exploiting space- and wavelength-dimensional switches,” OSA Optical Fiber Communication Conference (OFC 2017), paper M3K.2, Los Angeles, USA, March 2017.
  • T. Yasuda, Y. Mori, H. Hasegawa, and K. Sato, “Efficient network expansion strategy for elastic optical networks that considers channel capacity upgrades,” The international society for optics and photonics (SPIE 2017), paper 10129-8, San Francisco, USA, Feb. 2017.
  • K. Ito, Y. Mori, H. Hasegawa, K. Sato, “Impairment mitigation in noncoherent optical transmission enabled with machine learning for intra-datacenter networks” The international society for optics and photonics (SPIE 2017), paper 10131-9, San Francisco, USA, Feb. 2017.

2016

  • Y. Mori, K. Ueda, K. Suzuki, H. Matsuura, K. Tanizawa, S. Suda, K. Ikeda, S. Namiki, H. Kawashima, S. Nakamura, S. Yanagimachi, A. Tajima, and K. Sato, “Large-scale intra-datacenter switch using silicon-photonic multicast switches and tunable filters,” Victories 2016, Akihabara, Tokyo, November 2016.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Large-scale and simple-configuration optical switch enabled by asymmetric-port-count subswitches,” IEEE Photonics Conference (IPC 2016), paper ThG1.2, Hawaii, USA, October 2016.
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Novel optical-node architecture utilizing asymmetric-multiport wavelength-selective switches,” IEEE Photonics Conference (IPC 2016), paper WD2.4, Hawaii, USA, October 2016.
  • S. Yamakami, M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Highly reliable and cost-effective large-scale optical cross-connect architecture,” IEEE Photonics Conference (IPC 2016), paper WD2.4, Hawaii, USA, October 2016.
  • Y. Ito, M. Niwa, K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, “Demonstration of virtual direct link optical network,” IEEE Photonics Conference (IPC 2016), paper WD1.5, Hawaii, USA, October 2016.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, H. Matsuura, K Ishii, H. Kuwatsuka, and S. Namiki, “Experimental demonstration of 2,160x2,160 optical circuit switch for intra-datacenter networking,” IEEE Photonics Conference (IPC 2016), paper MB4.2, Hawaii, USA, October 2016.
  • J. Wu, M. Xu, S. Subramaniam, and H. Hasegawa, “Evaluation and performance modeling of two OXC architectures,” IEEE 37th Sarnoff Symposium, pp. 112-117, Newark, New Jersey, September 2016. Invited talk
  • K. Ueda, Y. Mori, H. Hasegwa, and K. Sato, “Recent progress in large-scale optical switches for intra-datacenter interconnection,” Progress In Electromagnetics Research Symposium (PIERS 2016), Session 2P4, Shanghai, China, August 2016. Invited talk
  • Y. Isono, M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Spectral-efficiency maximization with subcarrier-multiplexed hybrid-QAM signals adaptive to distance and hop count,” European Conference on Optical Communication (ECOC 2016), paper Th.1.E.3, Düsseldorf, Germany, September 2016.
  • Y. Ito, Y. Mori, H. Hasegawa, and K. Sato, “Optical networking utilizing virtual direct links,” European Conference on Optical Communication (ECOC 2016), paper W.4.P1.SC6.63, Düsseldorf, Germany, September 2016.
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “MxM WSS based ROADM architecture with topology-insensitive routing performance,” European Conference on Optical Communication (ECOC 2016), paper W.4.P1.SC4.38, Düsseldorf, Germany, September 2016.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, K. Suzuki, H. Matsuura, K. Tanizawa, S. Suda, K. Ikeda, S. Namiki, H. Kawashima, S. Nakamura, S. Yanagimachi, and A. Tajima, “Large-scale optical circuit switch for intra-datacenter networking using silicon-photonic multicast switch and tunable filter,” European Conference on Optical Communication (ECOC 2016), paper W.2.F.2, Düsseldorf, Germany, September 2016.
  • K. Suzuki, K. Tanizawa, S. Suda, H. Matsuura, K. Ikeda, Y. Mori, K. Sato, S. Namiki, H. Kawashima “Polarization-independent C-band tunable filter based on cascaded Si-wire asymmetric Mach-Zehnder interferometer” OptoElectronics and Communications Conference / International Conference on Photonics in Switching (OECC/PS), paper ME1-2, Nigata, Japan, July 2016.
  • Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Spectral efficient grouped routing network that applies dynamic optical path grooming” OptoElectronics and Communications Conference / International Conference on Photonics in Switching (OECC/PS), paper TuA1-1, Nigata, Japan, July 2016.
  • K. Ueda, Y. Mori, H. Hasegawa, H. Matsuura, K. Ishii, H. Kuwatsuka, S. Namiki, T. Watanabe, and K. Sato, “Demonstration of 1,440x1,440 fast optical circuit switch for datacenter networking,” OptoElectronics and Communications Conference / International Conference on Photonics in Switching (OECC/PS 2016), paper WF1-3, Nigata, Japan, July 2016. Best paper award
  • T. Ishikawa, M. Niwa, K. Ueda, Y. Mori, H. Hasegawa, S. Subramaniam, K. Sato, and O. Moriwaki, “Hardware scale analysis and prototype development of flexible waveband routing OXCs,” OptoElectronics and Communications Conference / International Conference on Photonics in Switching (OECC/PS 2016), paper TuA1-1, Nigata, Japan, July 2016.
  • T. Ishikawa, H. Hasegawa, S. Subramaniam, and K. Sato, “A compact OXC node architecture that exploits dynamic path bundling and routing,” 20th Conference on Optical Network Design and Modeling (ONDM 2016), paper S8-3, Cartagena, Spain, May 2016.
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Tipping point for the future scalable OXC -What size MxM WSS is needed?-,” OSA Optical Fiber Communication Conference (OFC 2015), paper W4B.5, Anaheim, USA, March 2016.
  • Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Highly spectral efficient elastic optical network employing grouped optical path routing,” OSA Optical Fiber Communication Conference (OFC 2015), paper W2A.48, Anaheim, USA, March 2016.
  • K. Sato, Y. Mori, H. Hasegawa, and K. Sato, “Algorithm for raising OXC port count to meet traffic growth at minimum-cost, OSA Optical Fiber Communication Conference (OFC 2015), paper W4B.2, Anaheim, USA, March 2016.
  • T. Ishikawa, Y. Mori, H. Hasegawa, and K. Sato, “Spectrum utilization maximization in coarse granular optical routing networks that employ fine granular shared protection,” International Conference on the Design of Reliable Communication Networks (DRCN), pp. 79-86, Paris, France, March 2016.
  • H. Kawase, Y. Mori, H. Hasegawa, and K. Sato, “Cycle-slip-tolerant decision-boundary creation with machine learning” IEEE International Conference on Photonics (ICP), paper Com-4, Sarawak, Malaysia, March 2016.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and O. Moriwaki, “Low-loss and large-scale optical switch utilizing asymmetric-port-count cyclic AWGs,” IEEE International Conference on Photonics (ICP), paper Dev-8, Sarawak, Malaysia, March 2016. Best paper award
  • K. Ueda, Y. Mori, H. Hasegawa, K. Ishii, H. Kuwatsuka, S. Namiki, H. Matsuura, and K. Sato, “Demonstration of 720x720 optical fast circuit switch for intra-datacenter networks,” Proc. SPIE 9775, Next-Generation Optical Networks for Data Centers and Short-Reach Links III, 977518, San Francisco, USA, February 2016.
  • H. Kawase, Y. Mori, H. Hasegawa, and K. Sato, “Real-time optical path control method that utilizes multiple support vector machines for traffic prediction,” Proc. SPIE 9773, Optical Metro Networks and Short-Haul Systems VII, 977318, San Francisco, USA, February 2016.
  • Y. Ito, Y. Mori, H. Hasegawa, and K. Sato, “Architecture and design of optical path networks utilizing waveband virtual links,” Proc. SPIE 9773, Optical Metro Networks and Short-Haul Systems VII, 977319, San Francisco, USA, February 2016.

2015

  • T. Ishikawa, Y. Mori, H. Hasegawa, and K. Sato, “Shared protected grouped optical path routing network design employing iterative path group relocation,” International Workshop on Reliable Networks Design and Modeling (RNDM 2015), Munich, Germany, October 2015.
  • Y. Terada, Y. Mori, H. Hasegawa, K. Sato, “Novel network control scheme that can substantially reduce link and node costs simultaneously,” European Conference on Optical Communication (ECOC 2015), paper We.4.5.5, Valencia, Spain, September 2015.
  • M. Niwa, Y. Mori, H. Hasegawa, and K. Sato, “Highly scalable and compact ROADM architecture that exploits MxN wavelength-selective switches,” Photonics in Switching (PS 2015), paper WeII3-2, Florence, Italy, September 2015.
  • K. Ueda, Y. Mori, H. Hasegawa, and K. Sato “Large-scale optical switch with simplified sub-switch connections for datacenter application,” Photonics in Switching (PS 2015), paper FrIII2-2, Florence, Italy, September 2015.
  • Y. Terada, Y. Mori, H. Hasegawa, K. Sato, and Takafumi Tanaka “Evaluation of frequency utilization enhancement with transmission-characteristics-aware grouped optical path routing,” Photonics in Switching (PS 2015), paper SC4-2, Florence, Italy, September 2015.
  • S. Deb, H. Hasegawa, Y. Mori, and K. Sato, “Impairment-aware optical multicast tree design with modulation format optimization” Photonics in Switching (PS 2015), paper SC4-1, Florence, Italy, September 2015.
  • J. Wu, S. Suburamaniam, and H. Hasegawa, “Comparison of OXC node architectures for WDM and flex-grid optical networks,” International Conference on Computer Communication and Networks (ICCCN2015), paper 15490684, Las Vegas, USA, August 2015. (Invited talk)
  • T. Miyazawa, T. Hirayama, H. Harai, K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, “Wavelength path signaling for WSS/WBSS combined optical switches in hierarchical optical networks,” International Conference on Transparent Optical Networks (ICTON 2015), paper Tu.B3.5, Budapest, Hungary, July 2015.
  • K. Ueda, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, T. Miyazawa, and H. Harai, “Experimental demonstration of multi-granular optical-path network utilizing wavelength/waveband-selective switches,” Opto-Electronics and Communications Conference (OECC 2015), paper JThB.15, Shanghai, China, June/July 2015.
  • Kadohata, T. Tanaka, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato, “Path accommodation design and reconfiguration for different reliability classes in virtualized multi-layer transport network,” Opto-Electronics and Communications Conference (OECC 2015), paper JTuB.24, Shanghai, China, June/July 2015.
  • H. Hasegawa, Y. Mori, and K. Sato, “Resilient grouped routing optical networks with finely granular protection,” Optical Networks Design & Modeling (ONDM), pp. 134-139, Pisa, Italy, May 2015.
  • J. Wu, S. Suburamaniam, and H. Hasegawa, “Optimal nonuniform wavebanding in WDM mesh networks,” Conference on Optical Network Design and Modeling (ONDM 2015), paper S5.3, Pisa, Italy, May 2015.
  • H. Hasegawa and K. Sato, “Large scale optical cross-connect: architecture, performance analysis, and feasibility demonstration,” OSA Optical Fiber Communication Conference (OFC 2015), paper W3J.1, Los Angeles, USA, March 2015.
  • H. Ishida, H. Hasegawa, and K. Sato, “Highly scalable subsystem modular OXC nodes that host tailored add/drop mechanism,” OSA Optical Fiber Communication Conference (OFC 2015), paper Th2A.47, Los Angeles, USA, March 2015.
  • S. Takashina, H. Ishida, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Demonstration of large-port-count and compact ROADM that exhibits virtual-C/D/C performance,” Optical Fiber Communication Conference (OFC 2015), paper W3J.6, Los Angeles, USA, March 2015.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Large-scale optical-switch prototype compactly implemented with novel functional configuration,” Optical Fiber Communication Conference (OFC 2015), paper W3D.1, Los Angeles, USA, March 2015.
  • Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Residual capacity aware dynamic control of GRE-based routing optical path networks under traffic growth model,” Optical Fiber Communication Conference (OFC 2015), paper Th1I.6, Los Angeles, USA, 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,” Optical Fiber Communication Conference (OFC 2015), paper W1I.2, Los Angeles, USA, March 2015.
  • H. Kawase, H. Hasegawa, and K. Sato, “Router power reduction by active performance control realized with support vector machines,” IEEE International Conference on Computing, Networking and Communication (ICNC 2015), pp. 530-535, Anaheim, USA, February 2015.

2014

  • S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Low-loss and low-power-consumption wavelength tunable filter enabling colorless/directionless/contentionless optical drop in ROADMs,” European Conference on Optical Communication (ECOC 2014), paper We.3.5.2, Cannes, France, September 2014.
  • Y. Teraeda, Y. Mori, H. Hasegawa, and K. Sato, “Verification of high frequency spectrum utilization in grouped optical path routing networks under traffic growth scenario,” European Conference on Optical Communication (ECOC 2014), paper Mo.3.1.4, Cannes, France, September 2014.
  • K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe, “Novel large-port-count optical-switch architecture for optical interconnection in datacenter,” European Conference on Optical Communication (ECOC 2014), paper We.3.5.1, Cannes, France, September 2014.
  • Z. Shen, H. Hasegawa, and, K. Sato, “Disruption minimized spectrum defragmentation and equalization of bitrate dependent blocking in semi-flexible grid networks,” Photonics in Switching in OSA Advanced Photonics for Communications, paper PW1B.2, San Diego, USA, July 2014.
  • K. Ueda, Y. Mori, H. Hasegawa, and K. Sato, “Optimum power-budget allocation for large-scale optical switches utilizing cyclic arrayed waveguide gratings,” Photonics in Switching in OSA Advanced Photonics for Communications, paper JT5B.3, San Diego, USA, July 2014.
  • K. Oka, H. Hasegawa, and, K. Sato, “Dynamic control of optical path networks by utilizing adaptive wavelength grouping and link fiber selection,” Photonics in Switching in OSA Advanced Photonics for Communications, paper PM4C.2, San Diego, USA, July 2014.
  • K. Sato, H. Hasegawa, and, K. Sato, “Cost effective and reliable networking that utilizes subsystem modular OXC nodes,” WIN2014 (What-Is-Next), a closed workshop of the AISTs Vertically Integrated Center for Technologies of Optical Routing toward Ideal Energy Savings (VICTORIES project), poster, (2014).
  • Z. Shen, H. Hasegawa, and, K. Sato, “A novel semi-flexible grid network utilizing aligned frequency slot assignment,” WIN2014 (What-Is-Next), a closed workshop of the AISTs Vertically Integrated Center for Technologies of Optical Routing toward Ideal Energy Savings (VICTORIES project), poster, (2014).
  • H.-C. Le, H. Hasegawa, and K. Sato, “Blocking performance of multi-stage routing optical path networks,” OptoElectronics and Communication Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), paper TU6A-6, Melbourne, Australia, July 2014.
  • K. Sato, H. Hasegawa, and, K. Sato, “Design of reliable optical path networks that consist of large scale subsystem-modular OXC nodes,” OptoElectronics and Communication Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), paper MO1A-3, Melbourne, Australia, July 2014.
  • Z. Shen, H. Hasegawa, and, K. Sato, “A novel flexible grid/semi-flexible grid optical path network design algorithm that reserves exclusive frequency slots for high bitrate signals,” Conference on Optical Network Design and Modeling (ONDM 2014), paper S10.3, Stockholm Sweden, May 2014.
  • Jirattigalachote, Y. Taniguchi, T. Ban, P. Monti, L. Wosinska, H. Hasegawa, and K. Sato, “Design of Grouped Routing Entity (GRE)-based optical networks with 100% signal quality guarantee,” Conference on Optical Network Design and Modeling (ONDM 2014), paper S8.2, Stockholm Sweden, May 2014.
  • Y. Tanaka, H. Hasegawa and K. Sato, “Performance evaluations of large-scale OXC that achieves modular and hitless expansion,” Optical Fiber Communication Conference (OFC 2014), paper W2A.50, San Francisco, USA, March 2014.
  • H. Ishida, H. Hasegawa and K. Sato, “Hardware scale and performance evaluation of compact OXC add/drop architecture,” Optical Fiber Communication Conference (OFC 2014), paper W1C.7, San Francisco, USA, March 2014.
  • S. Takashina, Y. Mori, H. Hasegawa, and K. Sato, “Low crosstalk wavelength tunable filter that utilizes symmetric and asymmetric Mach-Zehnder interferometers,” Optical Fiber Communication Conference (OFC 2014), paper Th3F.6, San Francisco, USA, March 2014.
  • Md. S. Faruk, Y. Mori, and K. Kikuchi, “Estimation of OSNR for Nyquist-WDM transmission systems using statistical moments of equalized signals in digital coherent receivers,” Optical Fiber Communication Conference (OFC 2014), paper Th2A.29, San Francisco, USA, March 2014.
  • Y. Mori, H. Hasegawa, and K. Sato, “Fiber-nonlinearity limitation of transmission distances in ultra-dense gridless photonic networks,” Optical Fiber Communication Conference (OFC 2014), paper W2A.33, San Francisco, USA, March 2014.
  • Y. Terada, Y. Mori, H. Hasegawa, and K. Sato, “Enhancement of fiber frequency utilization by employing grouped optical path routing,” Optical Fiber Communication Conference (OFC 2014), paper W1C.6, San Francisco, USA, March 2014.
  • K. Takaha, Y. Mori, H. Hasegawa, and K. Sato, “A 204.8 Tbps throughput 64x64 optical cross-connect prototype that allows C/D/C add/drop,” Optical Fiber Communication Conference (OFC 2014), paper M2K.1, San Francisco, USA, March 2014. Top-scoring paper
  • 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,” Proc. SPIE 9388, Optical Metro Networks and Short-Haul Systems VII, 938807, February 2014.
  • 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, February 2014.
  • Y. Mori and K. Sato, “Photonic networks that exploit digital coherent technologies,” Proc. SPIE 9008, Optical Metro Networks and Short-Haul Systems VI, 900802, February 2014. Invited paper

2013

  • H.-C. Le, H. Hasegawa, and K. Sato, “A comparison of large-scale selective switch-based optical cross-connects,” IEEE International Conference on Advanced Technologies for Communications (ATC 2013), pp. 55-59, Hanoi, Vietnam, October 2013.
  • H.-C. Le, H. Hasegawa, and K. Sato, “Performance evaluations of large-scale OXCs that utilize multi-stage hetero-granular optical path switching,” European Conference on Optical Communication (ECOC 2013), paper Th.2.E.3, London, United Kingdom, September 2013.
  • Y. Tanaka, Y. Iwai, H. Hasegawa, and K. Sato, “Subsystem modular OXC architecture that achieves disruption free port count expansion,” European Conference on Optical Communication (ECOC 2013), paper Th.2.E.4, London, United Kingdom, September 2013.
  • Z. Shen, H. Hasegawa, K. Sato, T. Tanaka, and, A. Hirano, “A novel semi-flexible grid optical path network that utilizes aligned frequency slot arrangement,” European Conference on Optical Communication (ECOC 2013), paper We.2.E.2, London, United Kingdom, September 2013.
  • H. Lu, Y. Mori, C. Han, and K. Kikuchi, "Novel polarization-diversity scheme based on mutual phase conjugation for fiber-nonlinearity mitigation in ultra-long coherent optical transmission systems," European Conference on Optical Communication (ECOC 2013), paper We.3.C.3, London, United Kingdom, September 2013.
  • Y. Mori, C. Han, H. Lu, and K. Kikuchi, "Wavelength demultiplexing of Nyquist WDM signals under large frequency offsets in digital coherent receivers," European Conference on Optical Communication (ECOC 2013), paper Mo.4.C.6, London, United Kingdom, September 2013.
  • K. Takaha, T. Ban, H. Hasegawa, K. Sato, H. Takahashi, and M. Okuno, “Development of ultra-compact 8x8 waveband cross-connect,” OptoElectronics and Communications Conference (OECC 2013), paper WT2-3, Kyoto, Japan, July 2013.
  • T. Ban, H.-C. Le, H. Hasegawa, and K. Sato, “Evaluation of hardware requirements for largescale OXC architecture employing wavelength switching and fiber selection,” OptoElectronics and Communications Conference (OECC 2013), paper WT2-2, Kyoto, Japan, July 2013.
  • H.-C. Le, T. Ban, H. Hasegawa, and K. Sato, “Performance evaluation of large-scale OXC architectures that utilize intra-node routing restriction,” OptoElectronics and Communications Conference (OECC 2013), paper MQ2-2, Kyoto, Japan, July 2013.
  • H. Ishida, H. Hasegawa, and K. Sato, “An efficient add/drop architecture for large-scale subsystem-modular OXC,” International Conference on Transparent Optical Networks (ICTON 2013), paper We.A1.5, Cartagena, Spain, June 2013.
  • Y. Iwai, H. Hasegawa, and, K. Sato, “OXC hardware scale reduction attained by using interconnected subsystem architecture,” Optical Fiber Communication Conference (OFC 2013), paper NW1J.2, Anaheim, USA, March 2013.
  • T. Niwa, H. Hasegawa, and, K. Sato, “A 270 X 270 optical cross-connect switch utilizing wavelength routing with cascaded AWGs,” Optical Fiber Communication Conference (OFC 2013), paper OTh1A.3, Anaheim, USA, March 2013.
  • T. Niwa, H. Hasegawa, K. Sato, T. Watanabe, H. Takahashi, and S. Soma, “Compact integrated tunable filter utilizing AWG routing function and small switches,” Optical Fiber Communication Conference (OFC 2013), paper OW1C.2, Anaheim, USA, March 2013.
  • Y. Taniguchi, H. Hasegawa, and K. Sato, “Dynamic grouped routing optical networks for cost effective and agile wavelength services,” Optical Fiber Communication Conference (OFC 2013), paper OM3A.5, Anaheim, USA, March 2013.
  • Z. Shen, H. Hasegawa, and, K. Sato, “Impact of wavelength/waveband convertors and the cost bound in hierarchical optical path networks,” Optical Fiber Communication Conference (OFC 2013), paper OM3A.2, Anaheim, USA, March 2013.
  • Y. Mori and K. Kikuchi, "Dual-stage phase estimator enabling perfect frequency offset in digital coherent receivers," Optical Fiber Communication Conference (OFC 2013), paper OTu3I.7, Anaheim, USA, March 2013.
  • H. Hasegawa, Y. Taniguchi, K. Sato, A. Jirattigalachote, P. Monti, and L. Wosinska, “Design strategies for survivable grouped routing entity (GRE)-based optical networks,” International Workshop on the Design of Reliable Communication Networks (DRCN 2013), pp. 148-154 Budapest, Hungary, March 2013.

Awards

2022

  • 松尾武,電子情報通信学会東海支部 学生研究奨励賞,2022/06/20
  • 久野拓真, IEEE Nagoya Section Excellent Student Award, 2022/03/25
  • 土田直樹, IEEE Nagoya Section Conference Presentation Award, 2022/03/07
  • 棟方隆司, 電子情報通信学会フォトニックネットワーク研究会 第8回JPNデザインコンテスト優秀賞, 2022/03/01
  • 久野拓真, 電子情報通信学会フォトニックネットワーク研究会学生ワークショップ 優秀賞, 2021/03/01

2021

  • 久野拓真, 公益財団法人 電子電子情報学術振興財団 原島博学術奨励賞, 2021/06/30
  • 土田直樹, 電子情報通信学会東海支部 学生研究奨励賞, 2021/06/04
  • 久野拓真, IEEE名古屋支部 国際会議研究発表賞, 2021/03/30
  • 王洋, 電子情報通信学会フォトニックネットワーク研究会 PN研学生奨励賞, 2021/03/30
  • 久野拓真, 電子情報通信学会フォトニックネットワーク研究会 第7回JPNデザインコンテスト優秀賞, 2021/03/30
  • 坂野純, 電子情報通信学会フォトニックネットワーク研究会 第15回PN研学生ワークショッププレゼン賞, 2021/03/30

2020

  • 王洋, Best Student Paper Award by 25th OptoElectronics and Communications Conference (OECC2020),2020/10/07
  • 久野拓真, Best Paper Award of 8th IEEE International Conference on Photonics (ICP2020),2020/6/28
  • 久野拓真, Best Student Paper Award by International Conference on Optical Network Design and Modeling (ONDM),2020/5/21
  • 本田瑛士, 電子情報通信学会東海支部 学生研究奨励賞,2020/6/01
  • 久野拓真, 電子情報通信学会東海支部 学生研究奨励賞,2020/6/01
  • 白木隆太,IEEE名古屋支部 国際会議研究発表賞, 2020/4
  • 白木隆太,電気通信普及財団賞 テレコムシステム技術学生賞, 2020/3/23
  • 白木隆太,電子情報通信学会,JPNデザインコンテスト JPNデザインコンテスト奨励賞, 2020/2/21

2019

  • 白木隆太,Best Student Oral Presentation Award,International Conference on Transparent Optical Network (ICTON), 2019/7/12
  • 白木隆太, 電子情報通信学会東海支部 学生研究奨励賞,2019/6/11
  • 本田瑛士, 電子情報通信学会フォトニックネットワーク研究会 第15回学生ワークショップ優秀賞, 2019/3/14

2018

  • Mungun-Erdene Ganbold, OSA Advanced Photonics Congress 2018 Best Student Paper Award 1st Prize, 2018/6/18
  • 茅野敬介,電子情報通信学会東海支部 学生研究奨励賞,2018/6/18
  • 橋本涼太,電子情報通信学会東海支部 学生研究奨励賞,2018/6/18
  • 山岡修平,IEEE名古屋支部国際会議研究発表賞,2018/3/22
  • 永井宏樹,Optical Communications Best Technical Paper Award, Photonics West 2018, 2018/1/29

2017

  • 磯野悠馬,English Section Award,IEICE General Conference,2017/10/27
  • 山岡修平,電子情報通信学会東海支部 学生研究奨励賞,2017/6/15
  • 山上修平,電子情報通信学会東海支部 学生研究奨励賞,2017/6/15
  • 伊東優作,IEEE Nagoya Section Conference Presentation Award,2017/6/15
  • 山岡修平,電子情報通信学会フォトニックネットワーク研究会 第13回学生ワークショップ優秀賞,2017/3/7
  • 斎藤裕,電子情報通信学会フォトニックネットワーク研究会 第3回JPNデザインコンテスト優秀賞,2017/3/6

2016

  • 上田恒,OECC/PS 2016 (The 21st OptoElectronics and Communications Conference/International Conference on Photonics in Switching 2016) Best Paper Award,2016/7/3
  • 丹羽真規,電子情報通信学会東海支部 学生研究奨励賞,2016/6/15
  • 石川智啓,電子情報通信学会東海支部 学生研究奨励賞,2016/6/15
  • 丹羽真規,OFC 2016 Top rated systems/networking paper,2016/3/20
  • 佐藤晃輔,OFC 2016 Top rated systems/networking paper,2016/3/20
  • 上田恒,Best Paper Award at 2016 IEEE 6th International Conference on Photonics (ICP 2016), 2016/3/17
  • 伊藤圭佑,電子情報通信学会フォトニックネットワーク研究会 学生ワークショップショートプレゼン賞,2016/3/10
  • 伊藤圭佑,電子情報通信学会フォトニックネットワーク研究会 学生ワークショップ優秀賞,2016/3/10
  • 上田恒,電子情報通信学会学術奨励賞,2016/3/7
  • 上田恒,2016年レーザ学会学術講演会第36回年次大会優秀論文発表賞,2016/2/28

2015

  • 川瀬晃嗣,電子情報通信学会フォトニックネットワーク研究会 若手研究賞,2015/9/1
  • 上田恒,電子情報通信学会 東海支部学生研究奨励賞,2015/7/3
  • 丹羽真規,レーザ学会第35回年次大会優秀論文発表賞,2015/5/29
  • 上田恒,電子情報通信学会フォトニックネットワーク研究会 学生ワークショップ優秀賞,2015/3/19
  • 上田恒,電子情報通信学会フォトニックネットワーク研究会 学生ワークショップショートプレゼン賞,2015/3/19
  • 寺田佑貴,電子情報通信学会フォトニックネットワーク研究会 若手研究賞,2015/3/18
  • 沈志舒,電子情報通信学会フォトニックネットワーク研究会 若手研究賞,2015/3/11
  • 上田恒,OFC 2015 Top-scoring paper, 2015/3/1

2014

  • 高羽健介,Top scored paper at OFC/NFOEC 2014,2014/3/10