2022 International Conference on Optical Network Design and Modelling (ONDM2022)   TPC  

2021.10 - 2022.5   

2021 IEEE Global Communications Conference: Optical Networks and Systems   TPC Member  

2021.6 - 2021.12   

The 27th Optoelectronics and Communications Conference (OECC 2022）   General Affairs Committee  

2019.10 - 2022.7   

IEEE Global Communications Conference 2019   TPC member (Optical Networks and Systems)  

2019.1 - 2019.12   

20th Opto-Electronics and Communications Conference /Photonics in Switching and Computing 2019 (OECC/PSC2019)   Gereral Affairs Committee and Technical Program Commitee  

2018.7 - 2019.7   

International Conference on Computing, Networking and Communications (ICNC 2017))   Workshop Co-chair  

2016.6 - 2017.3   

Globecom 2016   TPC member  

2016.3 - 2016.12   

17th Opto-Electronics and Communications Conference /Photonics in Switching 2016 (OECC/PS2016)   Gereral Affairs Committee, Technical Program Commitee, and Workshop Organizer  

2015.7 - 2016.7   

International Conference on Communications 2016 (ICC2016)   TPC member  

2015.6 - 2016.6   

International Conference on Computing, Networking and Communications (ICNC 2016)   TPC  

2015.6 - 2016.3   

7th International Workshop on Reliable Networks Design and Modeling (RNDM2015)   TPC member  

2014.10 - 2015.12   

International Conference on Communications 2015 (ICC2015)   TPC member  

2014.10 - 2015.6   

19th International Conference on Optical Networking Design and Modeling (ONDM 2015)   TPC member  

2014.10 - 2015.5   

電子情報通信学会通信ソサイエティ研専運営会議   財務幹事  

2014.6 - 2016.5   

International Conference on Computing, Networking and Communications (ICNC 2015)   TPC  

2014.6 - 2015.3   

6th International Workshop on Reliable Networks Design and Modeling (RNDM2014)   TPC member  

2014.3 - 2014.12   

10th International Workshop on the Design of Reliable Communication Networks (DRCN2014)   TPC member  

2014.3   

International Conference on Computing, Networking and Communications (ICNC 2014)   TPC  

2014.2   

18th International Conference on Optical Networking Design and Modeling (ONDM 2014)   TPC member  

2013.11 - 2014.5   

Asia Communications and Photonics Conference and Exhibition (ACP2013)   Technical Program Commitee  

2013.11   

International Conference on Communications 2014 (ICC2014)   TPC member  

2013.10 - 2014.6   

Photonics in Switching and Conference on Optical Internet 2013(PS/COIN2013)   TPC member  

2013.7   

9th International Workshop on the Design of Reliable Communication Networks (DRCN2013)   TPC member  

2013.3   

Asia Communications and Photonics Conference and Exhibition (ACP2012)   Technical Program Commitee  

2012.11   

Photonics in Switching 2012(PS2012)   TPC member  

2012.9   

Asia Communications and Photonics Conference and Exhibition (ACP2011)   Technical Program Commitee  

2011.11   

International Conference on Communications 2012 (ICC2012)   TPC member  

2011.10 - 2012.6   

8th International Workshop on the Design of Reliable Communication Networks (DRCN2011)   TPC member  

2011.10   

  TPC member  

2011.8 - 2011.12   

Photonics in Switching and Conference on Optical Internet 2011(PS/COIN2011)   TPC member  

2011.7   

International Conference on Communications 2011 (ICC2011)   TPC member  

2011.6   

8th International Workshop on the Design of Reliable Communication Networks (DRCN2011)   TPC member  

2011.3 - 2011.10   

Asia Communications and Photonics Conference and Exhibition (ACP2010)   Technical Program Commitee  

2010.12   

15th Opto-Electronics and Communications Conference (OECC2010)   TPC member  

2010.8   

電子情報通信学会　東海支部   庶務幹事  

2009.6 - 2011.5   

2008 International Symposium on Information Theory and its Applications (ISITA2008)   Publication  

2008.12   

Conference on Optical Internet 2008 (COIN2008)   TPC member  

2008.7   

12th Opto-Electronics and Communications Conference (OECC2007)   Commitee  

2007.7   

電子情報通信学会　フォトニックネットワーク研究専門委員会   顧問  

2005.6   

情報理論とその応用シンポジウム   実行委員(総務担当)  

2002.11   

Best Paper Award

2013.7   The 18th OptoElectronics and Communications Conference (OECC2013)  

Best Paper Award

2009.2   the 13th Conference on Optical Network Design and Modeling (ONDM2009)  

Best Tutorial Paper Award

2008.9   The Institute of Electronics, Information and Communication Engineers (IEICE)  

IEICE Young Scientist Award

2005   The Institute of Electronics, Information and Communication Engineers (IEICE)  

Young Scientist Award

2003   Society of Information Theory and Its Application  

Optical networking that exploits massive wavelength/spectrum and spatial parallelisms Invited Reviewed

Hasegawa, H

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 16 ( 11 ) page： H27 - H39   2024.11

波長粒度・波長群粒度ルーティングノード混在型光ネットワーク

平井 雄大, 久野 拓真, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 124 ( 346 ) page： 57 - 63   2024.11

スペクトル狭窄を緩和する系列推定法

樋口 怜治, 關塚 太成, 佐竹 風人, 久野 拓真, 森 洋二郎, 長谷川 浩

電子情報通信学会ソサイエティ大会予稿集   Vol. 124 ( 262 ) page： 11 - 16   2024.11

デュアルパイロットキャリアを用いた局発レーザ位相の分離手法およびその応用 International coauthorship

矢口 勇也, 宮川 由宇, 杉浦 宗弥, Shih-Chun Lin, Suresh Subramaniam, 長谷川 浩, Denis Masson, Simon Fafard, 松浦 基晴

電子情報通信学会技術研究報告   Vol. 124 ( 262 ) page： 74 - 78   2024.11

Digital Twin Enabled Data-Driven Approach for Traffic Efficiency and Software-Defined Vehicular Network Optimization Reviewed International coauthorship

M. S. Shahriar, S. Subramaniam, M. Matsuura, H. Hasegawa and S. -C. Lin

2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall)     2024.10

光給電用ダブルクラッド光ファイバの光分波回路に関する研究 International coauthorship

宮川由宇, 矢口勇也, Shih-Chun Lin, Suresh Subramaniam, 長谷川浩, 松浦基晴

電子情報通信学会ソサイエティ大会予稿集     2024.9

PRODIGY plus : a robust progressive upgrade approach for elastic optical networks Reviewed International coauthorship

Petale, S; Knapinska, A; Erbayat, E; Lechowicz, P; Walkowiak, K; Lin, SC; Matsuura, M; Hasegawa, H; Subramaniam, S

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 16 ( 9 ) page： E48 - E60   2024.9

多バンド伝送・多階層化を導入した次世代光ネットワークアーキテクチャの研究開発

湯浅颯士，森洋二郎，長谷川浩

令和６年度 電気・電子・情報関係学会東海支部連合大会     2024.8

多粒度ルーティングレイヤ化ネットワークにおけるルーティング粒度および性能評価

湯浅颯士・森　洋二郎・前田和佳子・柳町成行・長谷川　浩

電子情報通信学会技術研究報告   Vol. 124 ( 163 ) page： 43 - 48   2024.8

予備バス資源共有を導入した高信頼フレキシブル波長群ルーティングネットワーク

岩井貴寛, 森　洋二郎, 長谷川　浩

電子情報通信学会技術研究報告   Vol. 124 ( 163 ) page： 1 - 7   2024.8

マルチバンド伝送の部分的導入によるリングネットワーク容量拡大法およびその性能評価

下井 舜也, 湯浅 颯士, 森 洋二郎, 前田 和佳子, 柳町 成行, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 124 ( 163 ) page： 63 - 67   2024.8

デュアルパイロットキャリアを用いた局発レーザ位相の分離手法およびその応用

關塚 太成, 久野 拓真, 樋口 怜治, 白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 124 ( 163 ) page： 74 - 78   2024.8

Flexible waveband routing node architecture for spatial-division and multi-band optical networks [Invited] Invited Reviewed

Hasegawa, H

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 16 ( 7 ) page： C20 - C30   2024.7

Demonstration of Low-Complexity Digital Coherent Receivers for Intra-Datacenter Networks Reviewed

T. Kuno, T. Mitsuya, Y. Mori and H. Hasegawa

2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM)     2024.7

Fronthaul Network Architecture and Design For Optically Powered Passive Optical Networks Reviewed International coauthorship

E. Erbayat, S. Petale, S. -C. Lin, M. Matsuura, H. Hasegawa and S. Subramaniam

ICC 2024 - IEEE International Conference on Communications     page： 4961 - 4966   2024.6

送信器内信号劣化耐力を備えたディジタルコヒーレント受信器の実証実験

關塚 太成, 久野 拓真, 樋口 怜治, 落合 匠郎, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 442 ) page： 21 - 26   2024.6

Multi-layered Optical Network Architecture with Coarse-Glanularity -Routing Optical Bypass Invited Reviewed International coauthorship

Hayato Yuasa, Kenji Cruzado, Yojiro Mori, Shih-Chun Lin, Motoharu Matsuura, Suresh Subramaniam, Kohei Hosokawa, Shigeyuki Yanagimachi, Hiroshi Hasegawa

ONDM2024     2024.5

DRAMA-DC: Disaster Recovery Algorithm with Mitigation Awareness in Data Center EONs Reviewed International coauthorship

R. Zou, S. -C. Lin, M. Matsuura, H. Hasegawa and S. Subramaniam

ONDM2024     2024.5

PV cell-based divider for power-over-fiber using double-clad fibers Reviewed International coauthorship

Y. Miyakawa, Y. Yaguchi, S.-C. Lin, S. Subramaniam, H. Hasegawa, M. Matsuura

OWPT2024     2024.4

Cost-Effective Capacity Enhancement of Survivable Optical Networks by Supplemental Band Expansion and Backup Resource Sharing Reviewed

Daisuke Saito, Yojiro Mori, Kohei Hosokawa, Shigeyuki Yanagimachi, Hiroshi Hasegawa

OFC2024     page： W1C.2   2024.3

Capacity-Bound Evaluation and Routing and Spectrum Assignment for Elastic Optical Path Networks with Distance-Adaptive Modulation Reviewed International coauthorship

Kenji Cruzado, Yojiro Mori, Shih-Chun Lin, Motoharu Matsuura, Suresh Subramaniam, Hiroshi Hasegawa

OFC2024     page： W3C.6   2024.3

Intra-datacenter Optical Circuit Switch Architecture with Multi-band Transmission Technologies Reviewed

Takuma Kuno, Reiji Higuchi, Kazato Satake, Yuasa Hayato, Yojiro Mori, Hiroshi Hasegawa

OFC2024     page： M2G.3   2024.3

トラフィック分布解析に基づく領域分割とマルチバンド仮想バイパスリンクの順次導入による逐次的ネットワーク容量拡張法

湯浅颯士・クルザド ケンジ・森　洋二郎・細川晃平・柳町成行・長谷川　浩

電子情報通信学会 フォトニックネットワーク研究会     page： PN2023-86   2024.3

空間分割多重及びマルチバンド光ネットワーク実現に向けた空間・波長ハイブリッド光ノード構成 Invited International coauthorship

久野 拓真，落合 匠郎，樋口 怜治，佐竹 風人，森 洋二郎，Shih-Chun Lin，松浦 基晴，Suresh Subramaniam，長谷川 浩

電子情報通信学会 フォトニックネットワーク研究会     page： PN2023-73   2024.3

カットセット解析に基づくエラスティック光ネットワークの容量上界推定 Invited

クルザド ケンジ, 森洋二郎, 長谷川浩

電子情報通信学会 フォトニックネットワーク研究会     page： PN2023-74   2024.3

異粒度ルーティングを使用したレイヤ化ネットワーク

湯浅 颯士、クルザド ケンジ、森 洋二郎、細川 晃平、柳町 成行、長谷川 浩

2024年電子情報通信学会総合大会     page： B-12-08   2024.3

マルチドメインネットワークにおける境界での波長変換戦略及び性能評価

下井 舜也、湯浅 颯士、クルザド ケンジ、森 洋二郎、細川 晃平、柳町 成行、長谷川 浩

2024年電子情報通信学会総合大会     page： B-12-10   2024.3

Digital Coherent Receiver Enabling Nyquist Wavelength Demultiplexing Under Frequency Offset and Receiver-Side IQ Impairments

Kuno, T; Mori, Y; Hasegawa, H

JOURNAL OF LIGHTWAVE TECHNOLOGY   Vol. 42 ( 5 ) page： 1409 - 1422   2024.3

Demonstration of spectrum narrowing mitigation based on recurrent neural networks for ultra-dense WDM networks Reviewed

Ryuta Shiraki, Yojiro Mori, and Hiroshi Hasegawa

Optics Letters   Vol. 49 ( 4 ) page： 947 - 950   2024.2

ノード内接続グラフの逐次的縮退による高信頼化フレキシブル波長群ルーティングネットワークの設計法 Invited

岩井 貴寛, 和田 篤生, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 349,PN2023-67 ) page： 102 - 106   2024.1

Bandwidth Abundant Optical Networking Enabled by Spatially-Jointed and Multi-Band Flexible Waveband Routing Invited Reviewed

Hiroshi Hasegawa

IEICE Transactions on Communications   Vol. E107-B ( 1 ) page： 16 - 26   2024.1

Cost-effective network capacity upgrade by heterogeneous wavelength division multiplexing density with bandwidth-variable virtual direct links Reviewed

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

IEICE Transactions on Communications   Vol. E107-B ( 1 ) page： 39 - 48   2024.1

Demodulation Framework Based on Machine Learning for Unrepeated Transmission Systems

Shiraki, R; Mori, Y; Hasegawa, H

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E107B ( 1 ) page： 39 - 48   2024.1

Robustness of Digital Subcarrier Multiplexing Systems to Laser Phase Noise and Chromatic Dispersion

Satake, K; Shiraki, R; Mori, Y; Hasegawa, H

NEXT-GENERATION OPTICAL COMMUNICATION:COMPONENTS, SUB-SYSTEMS, AND SYSTEMS XIII   Vol. 12894   2024

DRAMA-DC: Disaster Recovery Algorithm with Mitigation Awareness in Data Center EONs

Zou, RJ; Lin, SC; Matsuura, M; Hasegawa, H; Subramaniam, S

PROCEEDINGS OF THE 2024 INTERNATIONAL CONFERENCE ON OPTICAL NETWORK DESIGN AND MODELING, ONDM 2024     2024

Demonstration of Low-complexity Digital Coherent Receivers for Intra-datacenter Networks

Kuno, T; Mitsuya, T; Mori, Y; Hasegawa, H

2024 IEEE PHOTONICS SOCIETY SUMMER TOPICALS MEETING SERIES, SUM 2024     2024

Fronthaul Network Architecture and Design For Optically Powered Passive Optical Networks

Erbayat, E; Petale, S; Lin, SC; Matsuura, M; Hasegawa, H; Subramaniam, S

ICC 2024 - IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS     page： 4961 - 4966   2024

ナイキストWDMシステムにおける波長多重分離法 Invited

久野 拓真, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 267,PN2023-44 ) page： 43 - 49   2023.11

サブシステムモジュラ構成ノードを導入したネットワークの光パス反復収容に基づく設計法 Invited

和田 篤生, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 267,PN2023-45 ) page： 50 - 54   2023.11

Neural Networkに基づくディジタル信号処理 ～ 大容量光ファイバ通信システムの実現に向けて ～ Invited

落合 匠郎, 樋口 怜治, 久野 拓真, 白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. rising2023   page： 50 - 54   2023.10

Experimental Demonstration of 128×128 Optical Cross-connects with 2.45 Pbps Throughput Reviewed International coauthorship

Takuro Ochiai, Takuma Kuno, Yojiro Mori, Ryuji Munakata, Yojiro Mori, Shi-Chun Lin, Motoharu Matsuura, Suresh Subramaniam, and Hiroshi Hasegawa

European Conference on Optical Communication     page： paper Th.B.6.4   2023.10

Flexible-Granularity Switching Node Architecture for Spatial-Division and Multi-Band Optical Networks Invited Reviewed

Hiroshi Hasegawa

European Conference on Optical Communication     2023.10

Introduction to the GLOBECOM 2022 Optical Networks and Systems Symposium Special Issue International coauthorship

Hasegawa, H; Jue, J; Sivalingam, K; Subramaniam, S

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 15 ( 10 ) page： ONS1 - ONS2   2023.10

Transceiver-impairment Mitigation Enabled by Adaptive Symbol Decision with Neural Networks Reviewed

Takuro Ochiai, Reiji Higuchi, Takuma Kuno, Ryuta Shiraki, Yojiro Mori, and Hiroshi Hasegawa

International Conference on Photonics in Switching and Computing 2023 (PSC2023)     page： paper Fr2B.2   2023.9

Neural Network を用いた量子化雑音と IQ 不均衡の同時補償技術

落合 匠郎，樋口 怜治，久野 拓真，白木 隆太，森 洋二郎，長谷川 浩

電子情報通信学会 ソサイエティ大会     page： B-12-11   2023.9

Transceiver-impairment Mitigation Enabled by Adaptive Symbol Decision with Neural Networks

Ochiai, T; Higuchi, R; Kuno, T; Shiraki, R; Mori, Y; Hasegawa, H

2023 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING, PSC     2023.9

4.71-Pbps-Throughput Multiband OXC Based on Space- and Wavelength-Granular Hybrid Switching Reviewed International coauthorship

Kuno, T; Ochiai, T; Higuchi, R; Satake, K; Cruzado, K; Munakata, R; Mori, Y; Lin, SC; Matsuura, M; Subramaniam, S; Hasegawa, H

2023 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING, PSC     2023.9

Effective Capacity Estimation Based on Cut-Set Load Analysis in Optical Path Networks Reviewed International coauthorship

Cruzado, K; Mori, Y; Lin, SC; Matsuura, M; Subramaniam, S; Hasegawa, H

2023 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING, PSC     2023.9

Cost-effective network capacity upgrade by heterogeneous wavelength division multiplexing density with bandwidth-variable virtual direct links Invited Reviewed

Hayashi Kazuki, Mori Yojiro, Hasegawa Hiroshi

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 15 ( 9 ) page： D23 - D32   2023.9

リンク群単位での負荷分散を考慮したネットワーク容量上限推定および経路波長割当法 Invited

クルザド ケンジ, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 168,PN2023-23 ) page： 35 - 39   2023.8

ディジタルサブキャリア伝送方式におけるレーザ位相雑音と波長分散の相互作用評価 Invited

佐竹 風人, 森 洋二郎, 白木 隆太, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 168,PN2023-33 ) page： 88 - 91   2023.8

2.45Pbpsスループットを実現する波長・空間ハイブリッド光クロスコネクトの提案と実証 Invited International coauthorship

落合 匠郎, 久野 拓真, 棟方 隆司, 森 洋二郎, Shih-Chun Lin, 松浦 基晴, Suresh Subramaniam, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 168,PN2023-30 ) page： 73 - 77   2023.8

マルチバンド仮想バイパスリンクを用いた高信頼ネットワーク大容量化手法 Invited

齊藤 大介, 森 洋二郎, 細川 晃平, 柳町 成行, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 168,PN2023-26 ) page： 55 - 58   2023.8

短距離コヒーレント光通信に適する変復調方式

樋口 怜治，森 洋二郎，白木 隆太，長谷川 浩

電気・電子・情報関係学会東海支部連合大会     2023.8

Architecture and performance evaluation of fiber-granularity routing networks with supplemental grooming by wavelength conversion Reviewed

Matsuo Takeshi, Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 15 ( 8 ) page： 541 - 552   2023.8

Beyond 5G研究開発を促進する国内MANモデルへの期待とモデル設計法 Invited

橘 拓至, 廣田 悠介, 鈴木 恵治郎, 釣谷 剛宏, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 137,CS2023-51 ) page： 126 - 130   2023.7

Modulation and Demodulation Method Robust against Laser Phase Noise Reviewed

Reiji Higuchi, Takuma Kuno, Ryuta Shiraki, Yojiro Mori, and Hiroshi Hasegawa

Conference on Lasers and Electro-Optics/Europe – European Quantum Electronics     page： paper CI-6.4   2023.6

回帰型ニューラルネットワークを用いたスペクトル狭窄効果抑制法 Invited

白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 123 ( 70,PN2023-15 ) page： 65 - 71   2023.6

Policy-Based Grooming, Route, Spectrum, and Operational Mode Planning in Dynamic Multilayer Networks

Tanaka Takafumi, Hasegawa Hiroshi

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E106B ( 6 ) page： 489 - 499   2023.6

Metropolitan Area Network Model Design Using Regional Railways Information for Beyond 5G Research

Tachibana Takuji, Hirota Yusuke, Suzuki Keijiro, Tsuritani Takehiro, Hasegawa Hiroshi

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E106-B ( 4 ) page： 296 - 306   2023.4

スペクトラム狭窄耐力を向上する等化器生成法

石川誉聡・白木隆太・森 洋二郎・長谷川 浩

電子情報通信学会2023年総合大会予稿集     page： B-12-14   2023.3

ニューラルネットワークシンボル判定器の特性変動耐性評価

加川功己・白木隆太・森 洋二郎・長谷川 浩

電子情報通信学会2023年総合大会予稿集     page： B-10-18   2023.3

短距離コヒーレント光通信システムに適する低損失変調方式

樋口怜治・白木隆太・森 洋二郎・長谷川 浩

電子情報通信学会2023年総合大会予稿集     page： B-10-18   2023.3

高次多値変調信号を用いたレーザ線幅の常時監視技術

土田直樹・久野拓真・白木隆太・森 洋二郎・長谷川 浩

電子情報通信学会2023年総合大会予稿集     page： B-12-9   2023.3

無瞬断光パス再配置を導入したファイバ粒度ルーティング光ネットワークの動的制御

内田航平・白木隆太・森 洋二郎・長谷川 浩

電子情報通信学会2023年総合大会予稿集     page： B-12-7   2023.3

Cost-Effective Network Capacity Enhancement With Multi-Band Virtual Bypass Links Reviewed

Daisuke Saito, Yojiro Mori , Kohei Hosokawa, Shigeyuki Yanagimachi, Hiroshi Hasegawa

Optical Fiber Communication Conference (OFC) 2023     2023.3

Architecture and Performance Evaluation of Bundled-Path-Routing Multi-Band Optical Networks Reviewed International coauthorship

Ryuji Munakata, Takuma Kuno, Yojiro Mori,Shih-Chun Lin,Motoharu Matsuura, Suresh Subramaniam, Hiroshi Hasegawa

Optical Fiber Communication Conference (OFC) 2023     2023.3

空間分割多重光ネットワークにおける動的光パス検索に基づくルーティングとコア・スペクトル割当法

黄 宇軒, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 398, PN2022-68 ) page： 142 - 146   2023.3

波長変換によるグルーミングを導入したファイバ粒度ルーティングネットワーク Invited

松尾 武, 白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 398, PN2022-51 ) page： 47 - 51   2023.3

短距離通信用ディジタルコヒーレント受信器を用いたデータセンタ光スイッチネットワーク Invited

三ツ矢 拓誠, 久野 拓真, 森 洋二郎, 長谷川 浩, 佐藤 健一

電子情報通信学会技術研究報告   Vol. 122 ( 398, PN2022-50 ) page： 43 - 46   2023.3

グループ化光パスルーティングを用いたマルチバンド光ネットワーク Invited

棟方 隆司, 久野 拓真, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 398, PN2022-49 ) page： 38 - 42   2023.3

ナイキスト波長分割多重技術を活用した超大容量光スイッチ Invited

久野 拓真, 三ツ矢 拓誠, 森 洋二郎, 長谷川 浩, 佐藤 健一

電子情報通信学会技術研究報告   Vol. 122 ( 398, PN2022-44 ) page： 13 - 18   2023.3

選択的なリンク周波数帯域拡大によるネットワーク容量拡張法

齊藤 大介, 森 洋二郎, 細川 晃平, 柳町 成行, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 350 ) page： 30 - 34   2023.1

レーザ特性の常時監視技術

土田 直樹, 久野 拓真, 白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 350 ) page： 39 - 42   2023.1

量子化雑音耐力を備えるディジタルコヒーレント受信器

落合 匠郎, 白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 350 ) page： 35 - 38   2023.1

PRODIGY: A Progressive Upgrade Approach For Elastic Optical Networks

Petale, S; Lin, SC; Matsuura, M; Hasegawa, H; Subramaniam, S

IEEE CONFERENCE ON GLOBAL COMMUNICATIONS, GLOBECOM     page： 2129 - 2134   2023

Efficient Network Capacity Expansion by Differentiated WDM-Density with Bandwidth-Variable Virtual Direct Links Reviewed

Kazuki Hayashi, Yojiro Mori, Hiroshi Hasegawa

2022 IEEE Future Networks World Forum (FNWF’22)     page： 310 - 313   2022.11

短距離光ファイバ通信システムのための低演算量ディジタルコヒーレント受信器 的設計・制御法 Invited

久野 拓真, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 198 ) page： 60 - 63   2022.10

Reinforcement-Learning-based Network Design and Control with Stepwise Reward Variation and Link-Adjacency Embedding Reviewed

Kenji Cruzado, Ryuta Shiraki, Yojiro Mori, Takafumi Tanaka, Katsuaki Higashimori, Fumikazu Inuzuka, Takuya Ohara, Hiroshi Hasegawa

2022 European Conference on Optical Communication (ECOC)     page： 1 - 3   2022.9

Highly Reliable and Large-Scale Optical Circuit Switch for Intra-Datacentre Network Reviewed

Takumi Mitsuya, Takuro Ochiai, Takuma Kuno, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

European Conference on Optical Communication (ECOC) 2022     page： 1 - 3   2022.9

Spatially-Jointed Flexible Waveband Routing Optical Networks Adopting Shared Path Protection Reviewed International coauthorship

Ryuji Munakata; Yojiro Mori; Suresh Subramaniam; Masahiko Jinno; Hiroshi Hasegawa

2022 12th International Workshop on Resilient Networks Design and Modeling   ( #1570810790 )   2022.9

RNN-Based Demodulation Framework for Spectrum Narrowing in Ultra-Dense WDM Networks Reviewed International journal

R. Shiraki, Y. Mori and H. Hasegawa

IEEE Photonics Technology Letters   Vol. 34 ( 18 ) page： 993 - 996   2022.9

DRAMA+: Disaster Management With Mitigation Awareness for Translucent Elastic Optical Networks Reviewed International coauthorship International journal

R. Zou, H. Hasegawa, M. Jinno and S. Subramaniam

IEEE Transactions on Network and Service Management   Vol. 19 ( 3 ) page： 2587 - 2599   2022.9

ファイバ粒度ルーティングネットワークの設計法

松尾武，白木隆太，森洋二郎，長谷川浩

令和４年度 電気・電子・情報関係学会東海支部連合大会   ( L2-6 )   2022.8

データセンタ向け高信頼波長ルーティングスイッチ

三ツ矢 拓誠, 落合 匠郎, 久野 拓真, 森 洋二郎, 長谷川 浩, 佐藤 健一

電子情報通信学会技術研究報告   Vol. 122 ( 169 ) page： 60 - 64   2022.8

スペクトラム狭窄の影響を緩和する予等化フィルタの生成法

石川 誉聡, 白木 隆太, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 169 ) page： 1 - 4   2022.8

階段型報酬制御とリンク隣接性を用いた光ネットワーク知的設計・制御法

クルザド ケンジ, 白木 隆太, 森 洋二郎, 田中 貴章, 東森 一晃, 犬塚 史一, 大原 拓也, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 122 ( 169 ) page： 31 - 35   2022.8

Constellation-Shaped 64QAM Robust against Phase Noise in Intra-Datacenter Networks Reviewed

J. Sakano, R. Shiraki, Y. Mori and H. Hasegawa

2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC)     2022.7

Power-saving Aware SDM Photonic Node with the Throughput Scalable to over Peta bit Invited Reviewed

Fumikazu Inuzuka, Hiroshi Hasegawa, Kohki Shibahara, Hidenori Takahashi, Takahiro Tsuritani, Kazunori Seno, Naru Nemoto, Emmanuel Le Taillandier de Gabory, Shigeyuki Yanagimachi, Taiji Sakamoto, Kazuhide Nakajima, Masanori Takahashi, Ryuichi Sugizaki, Ryo Nagase, Ken-ichi Sato, Yutaka Miyamoto

2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC)     2022.7

Optical Performance Monitoring Using Adaptive FIR Filters for Constellation-Shaped Higher-Order QAM Signals Reviewed

N. Tsuchida, T. Kuno, J. Sakano, Y. Mori and H. Hasegawa

2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC)     2022.7

Design and evaluation of a reconfigurable optical add-drop multiplexer with flexible wave-band routing in SDM networks Reviewed International coauthorship International journal

Kuno Takuma, Mori Yojiro, Subramaniam Suresh, Jinno Masahiko, Hasegawa Hiroshi

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 14 ( 4 ) page： 248 - 256   2022.4

位相雑音耐力を向上する変復調方式最適化

坂野　純・森　洋二郎・長谷川　浩

電子情報通信学会2022年総合大会予稿集     page： B-12-15   2022.3

波長・空間スーパーチャネルを用いたデータセンタ内光スイッチ

三ツ矢拓誠・久野拓真・森　洋二郎・長谷川　浩・佐藤健一

電子情報通信学会2022年総合大会予稿集     page： B-12-4   2022.3

共有型パスプロテクションを導入した高信頼空間結合型 Flexible Waveband Routing ネットワーク

棟方隆司・森　洋二郎・長谷川　浩

電子情報通信学会2022年総合大会予稿集     page： B-12-13   2022.3

BI-7　空間分割多重技術の最新研究開発動向：（第一部）将来の空間多重/超並列光ノード・光ネットワーク技術 Invited

長谷川　浩

電子情報通信学会2022年総合大会予稿集     page： BI-7-1   2022.3

Measurement method of transmitter IQ imbalance in digital coherent communication systems Reviewed

Naoki Tsuchida, Takuma Kuno, Yojiro Mori, Hiroshi Hasegawa

Proc. SPIE 12027, Metro and Data Center Optical Networks and Short-Reach Links V     2022.3

可変ルーティング粒度および波長多重密度を導入した光ネットワークの設計法

林　和輝・森　洋二郎・長谷川　浩

信学技報   Vol. 121 ( 386 ) page： PN2021-83   2022.3

受信信号を用いたレーザ線幅測定を可能とする光性能監視技術

土田直樹・久野拓真・森　洋二郎・長谷川　浩

信学技報   Vol. 121 ( 386 ) page： PN2021-81   2022.3

デジタル信号処理の不完全性を考慮した光変復調方式の最適化

坂野　純・森　洋二郎・長谷川　浩

信学技報   Vol. 121 ( 386 ) page： PN2021-85   2022.3

多機能かつ高性能ディジタルコヒーレント受信器

久野拓真・森　洋二郎・長谷川　浩

信学技報   Vol. 121 ( 386 ) page： PN2021-60   2022.3

高信頼空間結合型Flexible Waveband Routingネットワーク Invited

棟方 隆司, 森 洋二郎, 長谷川 浩

電子情報通信学会技術研究報告   Vol. 121 ( 386 ) page： 65 - 70   2022.3

Demonstration of High-throughput Intra-datacenter Switches Using Interleaved AWGs for Nyquist WDM Reviewed

Takuma Kuno, Takumi Mitsuya, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

Optical Fiber Communication Conference     page： Th3A.2   2022.3

Design and Dynamic Control of Fiber-Granular Routing Networks with Next-Generation Optical Paths Reviewed

Takeshi Matsuo, Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

Optical Fiber Communication Conference     2022.3

ナイキスト波長分割多重技術による1ペタビット超級光スイッチ

久野 拓真, 三ツ矢 拓誠, 森 洋二郎, 長谷川 浩, 佐藤 健一

電子情報通信学会技術研究報告   Vol. 121 ( 350 ) page： 41 - 45   2022.1

Highly Reliable and Large-Scale Optical Circuit Switch for Intra-Datacentre Networks

Mitsuya Takumi, Ochiai Takuro, Kuno Takuma, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2022 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC)     2022

Fragmentation-Minimized Periodic Network-Bandwidth Expansion Employing Aligned Channel Slot Allocation in Flexible Grid Optical Networks

Hasegawa Hiroshi, Yasuda Takuma, Mori Yojiro, Sato Ken-ichi

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E104B ( 12 ) page： 1514 - 1523   2021.12

Design and control of highly spectrally efficient photonic networks enabled by fiber-granular routing on overlaid ring-shaped topologies

Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-Ichi, Monti Paolo

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 13 ( 11 ) page： 233 - 243   2021.11

Bandwidth-abundant optical networks for cost-effective accommodation of 10n times traffic in the future Invited

長谷川浩

    2021.10

マルチコアファイバネットワーク実現に向けた光ノード構成

久野拓真・森　洋二郎・長谷川　浩

信学技報   Vol. 121 ( 165 ) page： PN2021-19   2021.8

空間結合型Flexible Waveband Routing及びパス冗長化に基づく高信頼化大容量光ネットワーク構成法

棟方 隆司・森 洋二郎・長谷川 浩

信学技報   Vol. 121 ( 165 ) page： 41 - 45   2021.8

Dynamic Routing and Spectrum Allocation Based on Actor-critic Learning for Multi-fiber Elastic Optical Networks Invited Reviewed

Y. Wang, Y. Mori, and H. Hasegawa

Photonics in Switching and Computing 2021 (PSC2021)     page： W1B.3   2021.8

Enhancing the flexibility and functionality of SCNs: demonstration of evolution toward any-core-access, nondirectional, and contentionless spatial channel cross-connects [Invited] International coauthorship

Jinno Masahiko, Ishikawa Tsubasa, Kodama Takahiro, Hasegawa Hiroshi, Subramaniam Suresh

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 13 ( 8 ) page： D80 - D92   2021.8

Measurement of Transmitter IQ Skew in High-Speed Digital Coherent Communication System Reviewed

Naoki Tsuchida, Takuma Kuno, Yojiro Mori and Hiroshi Hasegawa

26th Optoelectronic and Communications Conference (OECC 2021)     page： #3582879   2021.7

Performance Evaluation of Dynamic Fiber-Granular Routing Networks with Next-Generation Optical Paths Invited Reviewed

Takeshi Matsuo, Ryuta Shiraki, Yojiro Mori, and Hiroshi Hasegawa

26th Optoelectronic and Communications Conference (OECC 2021)     page： #3582898   2021.7

Design and Performance Evaluation of Resilient Optical Path Networks That Adopt Spatially-Jointed Flexible Waveband Routing Reviewed International coauthorship

Munakata Ryuji, Mori Yojiro, Subramaniam Suresh, Jinno Masahiko, Hasegawa Hiroshi

2021 INTERNATIONAL CONFERENCE ON OPTICAL NETWORK DESIGN AND MODELLING (ONDM)     2021.7

Estimation for IQ skew of A Transmitter in Digital Coherent Communication Systems Reviewed

Tsuchida Naoki, Kuno Takuma, Mori Yojiro, Hasegawa Hiroshi

2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)     2021.7

DRAMA: Disaster Management Algorithm with Mitigation Awareness for Elastic Optical Networks Reviewed International coauthorship

R. Zou, H. Hasegawa and, S. Subramaniam

DRCN2021     page： Session3-1   2021.4

Pre-Filtering Techniques for Spectrum Narrowing Caused by Optical Node Traversal in Ultra-Dense WDM Networks

Okamura Kazuya, Mori Yojiro, Hasegawa Hiroshi

IEEE PHOTONICS JOURNAL   Vol. 13 ( 2 )   2021.4

フォトニックネットワーク分野の教育・研究のオンライン化～名古屋大学の場合～ Invited

長谷川　浩

電子情報通信学会2021年総合大会予稿集     page： BI-10-4   2021.3

高信頼化Flexible Waveband Routingネットワーク

棟方 隆司・森 洋二郎・長谷川 浩

電子情報通信学会2021年総合大会予稿集     page： B12-2-2   2021.3

共有型パス冗長化を導入したFlexible Waveband Routing ネットワーク

棟方隆司, 森　洋二郎, 長谷川　浩

電子情報通信学会2022年総合大会予稿集     page： B-12-2   2021.3

高信頼化Flexible Waveband Routingネットワークの特性評価

棟方 隆司・森 洋二郎・長谷川 浩

電子情報通信学会フォトニックネットワーク研究会 第2種研究会PN研究会学⽣ワークショップ     page： pn2021-stws-10   2021.3

Evaluation of low-complexity digital coherent receivers for short-reach transmission systems

Kuno Takuma, Mori Yojiro, Hasegawa Hiroshi

METRO AND DATA CENTER OPTICAL NETWORKS AND SHORT-REACH LINKS IV   Vol. 11712   2021.3

Experimental Evaluation of Optical Cross-Connects with Flexible Waveband Routing Function for SDM Networks International coauthorship

Kuno Takuma, Mori Yojiro, Subramaniam Suresh, Jinno Masahiko, Hasegawa Hiroshi

2021 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)     2021.3

DeepDRAMA: Deep Reinforcement Learning-based Disaster Recovery with Mitigation Awareness in EONs

Zou Rujia, Bury Nathaniel, Hasegawa Hiroshi, Jinno Masahiko, Subramaniam Suresh

2021 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)     2021

Joint Pre-emphasis and Partial-response Coding for Spectrum Narrowing Caused by Repeated Optical-node Traversal in Ultra-dense WDM Networks Invited Reviewed

E. Honda, Y. Mori, H. Hasegawa and K. Sato

2020 European Conference on Optical Communications (ECOC)     page： 1 - 4   2020.11

Low-Complexity DSP Configuration for Short-Reach Transmission Systems Reviewed

T. Kuno, Y. Mori, and H. Hasegawa

25th Optoelectronics and Communications Conference (OECC 2020)     page： VP95   2020.10

Evaluation of Optical Circuit Switches for SDM-Based Intra-Datacenter Networks Reviewed

E. Honda, Y. Mori, H. Hasegawa, and K. Sato

25th Optoelectronics and Communications Conference (OECC 2020)     page： VP95   2020.10

Resource Assignment based on Core-State Value Evaluation to Handle Crosstalk and Spectrum fragments in SDM Elastic Optical Networks Reviewed

Y. Wang, Y. Mori, and H. Hasegawa

25th Optoelectronics and Communications Conference (OECC 2020)     page： T8-2.6   2020.10

空間分割多重光ネットワーク実現に向けた大容量光ノード構成法 Invited Reviewed

久野拓真・森　洋二郎・長谷川　浩

信学技報   Vol. 120 ( 137 ) page： PN2020-16   2020.8

空間分割多重光空間分割多重光ネットワークにおける経路・コア・波長割当法ネットワーク実現に向けた大容量光ノード構成法 Invited Reviewed

王　洋・森　洋二郎・長谷川　浩

信学技報   Vol. 120 ( 137 ) page： PN2020-20   2020.8

光ネットワーク最適化の基礎 Invited

長谷川浩

電子情報通信学会 光通信システム研究会 (OCS) OCS Summer School 2020     page： 講演 No.2   2020.7

Link-protection and FIPP p-cycle designs in translucent elastic optical networks

Zou Rujia, Hasegawa Hiroshi, Jinno Masahiko, Subramaniam Suresh

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 12 ( 7 ) page： 163 - 176   2020.7

強化学習に基づく光ネットワーク設計 ～ 知的経路スペクトラム選択法 Invited

白木隆太・森　洋二郎・長谷川　浩・佐藤健一

  Vol. 120 ( 71 ) page： PN2020-9   2020.6

A 2.15 Pbps Throughput Optical Cross-Connect with Flexible Waveband Routing Reviewed

T. Kuno, Y. Mori, and H. Hasegawa

2020 IEEE 8th International Conference on Photonics (ICP) (ICP2020)     page： on-line   2020.6

Assessment of Optical Node Architectures for Building Next Generation Large Bandwidth Networks

Ganbold Mungun-Erdene, Yasuda Takuma, Mori Yojiro, Hasegawa Hiroshi, Inuzuka Fumikazu, Hirano Akira, Sato Ken-ichi

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E103B ( 6 ) page： 679 - 689   2020.6

Transmission-Quality-Aware Online Network Design and Provisioning Enabled by Optical Performance Monitoring

Kayano Keisuke, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Oda Shoichiro, Yoshida Setsuo, Hoshida Takeshi

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E103B ( 6 ) page： 670 - 678   2020.6

Design of seamlessly and limitlessly expandable OXC and verification tests on its versatile applicability Reviewed

R. Hashimoto, Y. Mori, H. Hasegawa and K. Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 12 ( 5 ) page： 99-108   2020.5

High-Throughput and High-Port-Count Optical Cross- Connents Using Flexible Waveband Routing Reviewed

T. Kuno, Y. Mori, S. Subramaniam, M. Jinno and H. Hasegawa

2020 International Conference on Optical Network Design and Modeling (ONDM)     2020.5

Design of seamlessly and limitlessly expandable OXC and verification tests on its versatile applicability

Hashimoto Ryota, Mori Yojiro, Hasegawa Hirioshi, Sato Ken-ichi

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 12 ( 5 ) page： 99 - 108   2020.5

コア間干渉及び周波数断片化を考慮した空間多重光ネットワーク制御法

王 洋・森 洋二郎・長谷川 浩

電子情報通信学会2020年総合大会予稿集     page： B12-6   2020.3

High-throughput optical circuit switch for intra-datacenter networks based on spatial super-channels Reviewed

E. Honda, Y. Mori, H. Hasegawa, and K. Sato

OFC2020     page： W1F.2   2020.3

Dynamically controlled flexible-grid networks based on semi-flexible spectrum assignment and network-state-value evaluation Reviewed

R. Shiraki, Y. Mori, H. Hasegawa, and K. Sato

OFC2020     page： paper M1B.4   2020.3

SDMネットワークのための光ノード構成法に関する検討

久野拓真・森　洋二郎・長谷川　浩

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     page： pn2020-stws-3   2020.3

空間分割多重光ネットワークのための光ノード構成

久野拓真・森　洋二郎・長谷川　浩

電子情報通信学会技術研究報告   Vol. 119 ( 442 ) page： pp.37-43   2020.3

空間多重ノードアーキテクチャおよびネットワーク設計・制御技術 Invited

長谷川　浩，佐藤健一

電子情報通信学会EXAT研究会     page： EXAT2020-03   2020.2

Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping Reviewed

K. Okamura, Y. Mori, H. Hasegawa, and K. Sato

SPIE Photonics West2020     page： Paper 11308-12   2020.2

Highly spectrally efficient metro networks that adopt fiber-level granular routing on overlaid line-/ring-shaped virtual topologies Reviewed

R. Shiraki, Y. Mori, H. Hasegawa, K. Sato, and P. Monti

SPIE Photonics West2020     page： Paper 11308-13   2020.2

Architecture and Design of Coarse/Fine Hybrid Granular Routing Optical Networks

Ito Yusaku, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E103B ( 2 ) page： 118 - 129   2020.2

波長分割多重および空間分割多重を用いたデータセンタ向け大容量光スイッチ

本田 瑛士・森 洋二郎・長谷川 浩・佐藤 健一

レーザー学会学術講演会第40回年次大会予稿集     page： G04-22p-X   2020.1

波長分割多重および空間分割多重を用いた大容量光スイッチ

本田瑛士・森　洋二郎・長谷川　浩・佐藤健一

信学技報   Vol. 119 ( 366 ) page： OCS2019-75   2020.1

Demonstration of 4.3 Pbps Optical Circuit Switching for Intra-Datacentre Networks Based on Spatial Super-Channels Invited Reviewed

E. Honda, Y. Mori, H. Hasegawa and K. Sato

2020 European Conference on Optical Communications (ECOC)     page： 1 - 4   2020

Low-Complexity Digital Coherent Receivers for Short-Reach Transmission Systems

Kuno Takuma, Mori Yojiro, Hasegawa Hiroshi

2020 IEEE PHOTONICS CONFERENCE (IPC)     2020

A 2.15 Pbps Throughput Optical Cross-Connect with Flexible Waveband Routing

Kuno Takuma, Mori Yojiro, Hasegawa Hiroshi

2020 IEEE 8TH INTERNATIONAL CONFERENCE ON PHOTONICS (ICP)     2020

Dynamically Controlled Flexible-Grid Networks Based on Semi-Flexible Spectrum Assignment and Network-StateValue Evaluation

Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-Ichi

2020 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)     2020

Evaluation of Optical Circuit Switches for SDM-Based Intra-Datacenter Networks

Honda Eiji, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2020 OPTO-ELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC 2020)     2020

Resource Assignment based on Core-State Value Evaluation to Handle Crosstalk and Spectrum Fragments in SDM Elastic Optical Networks

Wang Yang, Mori Yojiro, Hasegawa Hiroshi

2020 OPTO-ELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC 2020)     2020

Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping

Okamura Kazuya, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

METRO AND DATA CENTER OPTICAL NETWORKS AND SHORT-REACH LINKS III   Vol. 11308   2020

Low-Complexity DSP Configuration for Short-Reach Transmission Systems

Kuno Takuma, Mori Yojiro, Hasegawa Hiroshi

2020 OPTO-ELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC 2020)     2020

Joint Pre-emphasis and Partial-response Coding for Spectrum Narrowing Caused by Repeated Optical-node Traversal in Ultra-dense WDM Networks

Okamura Kazuya, Mori Yojiro, Hasegawa Hiroshi

2020 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATIONS (ECOC)     2020

Highly spectrally efficient metro networks that adopt fiber-level granular routing on overlaid line-/ring-shaped virtual topologies

Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Monti Paolo

METRO AND DATA CENTER OPTICAL NETWORKS AND SHORT-REACH LINKS III   Vol. 11308   2020

High-Throughput Optical Circuit Switch for Intra-Datacenter Networks Based on Spatial Super-Channels

Honda Eiji, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2020 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)     2020

High-Throughput and High-Port-Count Optical Cross-Connents Using Flexible Waveband Routing

Kuno Takuma, Mori Yojiro, Subramaniam Suresh, Jinno Masahiko, Hasegawa Hiroshi

2020 INTERNATIONAL CONFERENCE ON OPTICAL NETWORK DESIGN AND MODELING (ONDM)     2020

P-Cycle Design for Translucent Elastic Optical Networks Reviewed

Rujia Zou, Suresh Subramaniam, Hiroshi Hasegawa, and Masahiko Jinno

2019 IEEE Global Communications Conference (GLOBECOM)     page： 1-6, ONS1-4   2019.12

フォトニックネットワークの知的制御 ～ 強化学習に基づく経路・波長選択法 ～

白木隆太・森　洋二郎・長谷川　浩・佐藤健一

電子情報通信学会超知性ネットワーキングに関する分野横断型研究会     page： ポスターとしての予稿提供   2019.11

強化学習に基づく通信需要分布適応型動的光パス制御法

白木隆太・森　洋二郎・長谷川　浩・佐藤健一

電子情報通信学会技術研究報告   Vol. 119 ( 290 ) page： pp.23-27   2019.11

Intra- and inter-data centre converged networks utilising Kramers-Kronig receivers Reviewed

E. Honda, Y. Mori, H. Hasegawa, and K. Sato

ECOC2019     page： Th.1.A.5   2019.9

Node architecture and design of spatially jointed flexible waveband routing optical networks Reviewed

H. Hasegawa, S. Subramaniam, M. Jinno

ECOC2019     page： Th.1.A.5   2019.9

Improved Optical Amplification Efficiency by using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks Reviewed

Hitoshi TAKESHITA Keiichi MATSUMOTO Hiroshi HASEGAWA Ken-ichi SATO Emmanuel Le Taillandier de GABORY

IEICE Transactions on Communications   Vol. E102-B ( 8 ) page： -   2019.8

Improved Optical Amplification Efficiency by using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks Reviewed

Hitoshi TAKESHITA, Keiichi MATSUMOTO, Hiroshi HASEGAWA, Ken-ichi SATO, and Emmanuel Le Taillandier de GABORY

IEICE Transactions on Communications   Vol. E102.B (2019) ( 8 ) page： 1579-1589   2019.8

Improved Optical Amplification Efficiency by Using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks

Takeshita Hitoshi, Matsumoto Keiichi, Hasegawa Hiroshi, Sato Ken-ichi, de Gabory Emmanuel Le Taillandier

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E102B ( 8 ) page： 1579 - 1589   2019.8

Dynamic Control of Transparent Optical Networks with Adaptive State-Value Assessment Enabled by Reinforcement Learning Reviewed

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

ICTON2019     page： Sa.A3.4   2019.7

Switching granularity and intra-node interconnection optimization for large scale optical nodes Invited Reviewed

Hiroshi Hasegawa and Ken-ichi Sato

OECC/PSC2019     page： WA2-5   2019.7

Feasibility Test of Large-Scale (1,424×1,424) Optical Circuit Switches Utilizing Commercially Available Tunable Lasers Reviewed

Eiji Honda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

OECC/PSC2019     page： WA1-3   2019.7

Evaluation of WSS Characteristics in Highly Dense WDM Networks Reviewed

Kazuya Okamura, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

OECC/PSC2019     page： --   2019.7

Design and evaluation of quasi-Nyquist WDM networks utilizing widely deployed wavelength-selective switches

Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

OPTICS EXPRESS   Vol. 27 ( 13 ) page： 18549 - 18560   2019.6

Design and evaluation of quasi-Nyquist WDM networks utilizing widely deployed wavelength-selective switches Reviewed

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

OSA Optics Express   Vol. 27 ( 13 ) page： 18549-18560   2019.6

Design and evaluation of quasi-Nyquist WDM networks utilizing widely deployed wavelength-selective switches Reviewed

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

OSA Optics Express   Vol. 27 ( 13 ) page： 18549-18560   2019.6

Assessment of Optical Node Architectures for Building Next Generation Large Bandwidth Networks Reviewed

Mungun-Erdene Ganbold, Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Fumikazu Inuzuka, Akira Hirano, Ken-ichi Sato

IEICE Transactions on Communications   Vol. E103.B (2020) ( 6 ) page： 679-689   2019.6

Efficient Dynamic Routing and Spectrum Assignment for Multifiber Elastic Optical Networks Reviewed

Jingxin Wu, Suresh Subramaniam, and Hiroshi Hasegawa

IEEE/OSA J. Opt. Commun. Netw.   Vol. 11 ( 5 ) page： 190-201   2019.5

Quasi-Nyquist WDM Networks UsingWidely Deployed Wavelength-Selective Switches Reviewed

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

5th International Symposium on Extremely Advanced Transmission Technologies (EXAT2019)     page： poster (+ 1-page paper)   2019.5

Efficient Dynamic Routing and Spectrum Assignment for Multifiber Elastic Optical Networks Reviewed

Jingxin Wu, Suresh Subramaniam, and Hiroshi Hasegawa

J. Opt. Commun. Netw.   Vol. 11 ( 5 ) page： 190-201   2019.5

Efficient Dynamic Routing and Spectrum Assignment for Multifiber Elastic Optical Networks

Wu Jingxin, Subramaniam Suresh, Hasegawa Hiroshi

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 11 ( 5 ) page： 190 - 201   2019.5

Digital post-processing against inline spectrum narrowing caused by optical node traversals Reviewed

Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

IEICE ComEx   Vol. 8 ( 4 ) page： 93-98   2019.4

Effectiveness of Transmission-Quality-Aware Online Network Design and Provisioning Enabled through Optical Performance Monitoring Reviewed

Keisuke Kayano, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Shoichiro Oda, Setsuo Yoshida, Takeshi Hoshida

IEICE ComEx   Vol. 8 ( 4 ) page： 81-86   2019.4

Design of and resiliency enhancement in coarse/fine hybrid granular routing optical networks based on iterative path-pair-loop inflation Reviewed

K. Itakura, Y. Mori, H. Hasegawa, and K. Sato

15th International Conference on Design of Reliable Communication Networks (DRCN2019)     page： I-3   2019.3

既設波長選択スイッチを用いた準ナイキスト波長分割多重ネットワークの実証

白木隆太・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2019年総合大会     page： B12-3   2019.3

クラマース・クローニッヒ受信器を用いたデータセンタ向け光スイッチネットワーク

本田瑛士・森洋二郎・長谷川浩・佐藤健一

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     page： pn2019-stws-5   2019.3

[依頼講演] 距離適応変調Grouped Routing

茅野敬介・山岡修平・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会技術研究報告   Vol. 118 ( 505 ) page： pp. 13-17   2019.3

超高密度波長分割多重ネットワークにおける波長選択スイッチ特性偏差の影響

岡村和哉・山岡修平・森洋二郎・長谷川浩・佐藤健一

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     page： pn2019-stws-4   2019.3

Assessment of Node- and Link- Level Blocking and Creating Cost-Effective Networks in the Era of Large Bandwidth Services Reviewed

Shuhei YAMAKAMI Masaki NIWA Yojiro MORI Hiroshi HASEGAWA Ken-ichi SATO Fumikazu INUZUKA Akira HIRANO

IEICE Transactions on Communications   Vol. E102-B ( 3 ) page： 510-521   2019.3

Demonstration of Quasi-Nyquist WDM Networks Using Widely DeployedWavelength-Selective Switches Reviewed

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

2019 Optical Fiber Communication Conference (OFC2019)     page： M1A.7   2019.3

Verification of high performance and wide applicability of seamlessly expandable and limitless OXC Reviewed

R. Hashimoto, Y. Mori, H. Hasegawa, and K. Sato

2019 Optical Fiber Communication Conference (OFC2019)     page： --   2019.3

Assessment of Node-and Link-Level Blocking and Creating Cost-Effective Networks in the Era of Large Bandwidth Services

Yamakami Shuhei, Niwa Masaki, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Inuzuka Fumikazu, Hirano Akira

IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E102B ( 3 ) page： 510 - 521   2019.3

Highly Dense Elastic Optical Networks Enabled by Grouped Routing with Distance-Adaptive Modulation Reviewed

K. Kayano, S. Yamaoka, Y. Mori, H. Hasegawa and K. Sato

IEEE Photonics Technology Letters   Vol. 31 ( 4 ) page： 295 - 298   2019.2

Novel network architecture enabling quasi-Nyquist wavelength-division multiplexing Reviewed

R. Shiraki, S. Yamaoka, Y. Mori, H. Hasegawa, and K. Sato

SPIE Photonics West, Proceedings Volume 10946, Metro and Data Center Optical Networks and Short-Reach Links II     page： 109460C   2019.2

仮想光リンクを導入した高信頼化光パスネットワーク

板倉圭佑・森　洋二郎・長谷川　浩・佐藤健一,

電子情報通信学会技術研究報告   Vol. 118 ( 396 ) page： pp. 263-270   2019.1

Dynamics Characterization of Wavelength-Tunable Laser Using Coherent Detection with Dual Local Oscillator

Eiji Honda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

    page： G3 13pII 02   2019.1

Feasibility Test of Large-Scale (1,424x1,424) Optical Circuit Switches Utilizing Commercially Available Tunable Lasers

Honda Eiji, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2019 24TH OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC) AND 2019 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING (PSC)     2019

Effectiveness of transmission-quality-aware online network design and provisioning enabled through optical performance monitoring

Kayano Keisuke, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Oda Shoichiro, Yoshida Setsuo, Hoshida Takeshi

IEICE COMMUNICATIONS EXPRESS   Vol. 8 ( 4 ) page： 81 - 86   2019

Digital post-processing against inline spectrum narrowing caused by optical node traversals

Yamaoka Shuhei, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

IEICE COMMUNICATIONS EXPRESS   Vol. 8 ( 4 ) page： 93 - 98   2019

Design of and Resiliency Enhancement in Coarse/Fine Hybrid Granular Routing Optical Networks Based on Iterative Path-Pair-Loop Inflation

Itakura Keisuke, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2019 15TH INTERNATIONAL CONFERENCE ON THE DESIGN OF RELIABLE COMMUNICATION NETWORKS (DRCN 2019)     page： 11 - 15   2019

Demonstration of Quasi-Nyquist WDM Networks Using Widely Deployed Wavelength-Selective Switches

Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2019 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)     2019

Evaluation of WSS Characteristics in Highly Dense WDM Networks

Okamura Kazuya, Yamaoka Shuhei, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2019 24TH OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC) AND 2019 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING (PSC)     2019

Verification of High Performance and Wide Applicability of Seamlessly Expandable and Limitless OXC

Hashimoto Ryota, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2019 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)     2019

Switching granularity and intra-node interconnection optimization for large scale optical nodes

Hasegawa Hiroshi, Sato Ken-ichi

2019 24TH OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC) AND 2019 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING (PSC)     2019

P-cycle Design for Translucent Elastic Optical Networks

Zou Rujia, Subramaniam Suresh, Hasegawa Hiroshi, Jinno Masahiko

2019 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)     2019

Novel Network Architecture Enabling Quasi-Nyquist Wavelength-Division Multiplexing

Shiraki Ryuta, Yamaoka Shuhei, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

METRO AND DATA CENTER OPTICAL NETWORKS AND SHORT-REACH LINKS II   Vol. 10946   2019

Node architectures in SDM networks Invited

Hiroshi Hasegawa and Ken-ichi Sato

Technical Report of IEICE-EXAT     page： EXAT2018-9, pp.5-11   2018.11

Novel Demodulation Framework Based on Quadrature Duo-Binary/Quaternary/Octernary Spectrum Shaping and MLSE for Mitigating Spectrum Narrowing Caused by Node Traversals Reviewed

Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

ECOC2018     page： Mo4F   2018.9

経路ダイバーシティ及び周波数利用効率を向上する高信頼化光パスネットワーク設計法

板倉圭佑・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2018年ソサイエティ大会     page： B-12-4   2018.9

距離適応変調及びGrouped Routing による超高密度光ネットワーク

茅野敬介・山岡修平・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2018年ソサイエティ大会     page： B-12-9   2018.9

Quasi-Nyquist WDM Network Architecture and Its Design

Technical Report of IEICE   Vol. 118 ( 203 ) page： PN2018-17, pp. 13-16   2018.8

Novel FM-Noise Spectrum Measurement Based on Three-Wave Interference Reviewed

Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

CLEO Pacific Rim     page： W4I.7   2018.8

Joint Banding-node Placement and Resource Allocation for Multi-granular Elastic Optical Networks Reviewed

Jingxin Wu, Maotong Xu, Suresh Subramaniam, and Hiroshi Hasegawa

IEEE/OSA JOCN   Vol. 10 ( 8 ) page： 27-38   2018.8

Joint Banding-Node Placement and Resource Allocation for Multigranular Elastic Optical Networks

Wu Jingxin, Xu Maotong, Subramaniam Suresh, Hasegawa Hiroshi

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 10 ( 8 ) page： C27 - C38   2018.8

Assessment of Optical Cross-Connect Architectures for the Creation of Next Generation Optical Networks Reviewed

Mungun-Erdene Ganbold, Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

OECC2018     page： 6A1-5   2018.7

Novel Demodulation Algorithm Based on Duo-Binary Spectrum Shaping and MLSE for Mitigating Spectrum Narrowing Caused by Multiple Node Traversals Reviewed

Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

OSA Advanced Photonics Congress 2018     page： SpW1G.5   2018.7

Dynamic Routing and Spectrum Assignment for Multi-fiber Elastic Optical Networks Reviewed

Jingxin Wu, Suresh Subramaniam, and Hiroshi Hasegawa

OSA Advanced Photonics Congress 2018     page： NeTu4F.1   2018.7

Design and Verification of Large-Scale Optical Circuit Switch Using ULCF AWGs for Datacenter Application Invited Reviewed

H. Nagai, Y. Mori, H. Hasegawa, and K. Sato

IEEE/OSA J. Opt. Commun. Netw.   Vol. 10 ( 7 ) page： B82-B89   2018.7

Design and Verification of Large-Scale Optical Circuit Switch Using ULCF AWGs for Datacenter Application

Nagai H., Mori Y., Hasegawa H., Sato K.

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING   Vol. 10 ( 7 ) page： B82 - B89   2018.7

リング網における超高密度波長多重と光パス収容法

白木隆太・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2018年総合大会     page： B-12-14   2018.3

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

Optical Fiber Communication Conference and Exhibition 2018     page： M3J.8   2018.3

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

Optical Fiber Communication Conference and Exhibition 2018     page： M3J.6   2018.3

Spectral Utilization Efficient Coarse Granular Routing Optical Networks with Resiliency against Multiple Failures Reviewed

Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

14th International Conference on Design of Reliable Communication Networks     page： A3   2018.2

Large-scale optical node architecture enabling spectral-efficiency maximization in ultra-dense WDM networks Reviewed

S.Yamaoka, R. Hashimoto, Y. Mori, H.Hasegawa, and K. Sato

SPIE 10560, Short Reach Networks II     page： 10560-15   2018.1

Demonstration of 153.6Tbps Throughput from 1,536x1,536 Optical Switch with Uniform Loss and Cyclic Frequency AWGs Reviewed

H. Nagai, Y. Mori, H.Hasegawa, and K. Sato

SPIE 10560, Metro and Data Center Optical Networks and Short-Reach Links   Vol. 10560   page： 105600P   2018

Architecture and Design of Quasi-Nyquist WDM Networks with Flexible Grid Granular Switching

Shiraki Ryuta, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2018 PHOTONICS IN SWITCHING AND COMPUTING (PSC)     2018

Spectrally Efficient and Highly Resilient Grouped Routing Network Enhanced with Optical Performance Monitoring

Kayano Keisuke, Saito Hiroshi, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Oda Shoichiro, Yoshida Setsuo, Hoshida Takeshi

2018 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)     2018

Assessment of optical cross-connect architectures for the creation of next generation optical networks

Ganbold Mungun-Erdene, Yasuda Takuma, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

23RD OPTO-ELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC2018)     2018

A New Framework for Nation-Wide Networking in Future Datacenter-Traffic Centric Era

Kayano Keisuke, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Inuzuka Fumikazu, Hirano Akira

2018 PHOTONICS IN SWITCHING AND COMPUTING (PSC)     2018

Fragmentation-Minimized Transponder Upgrading Employing Channel Bandwidth Aligned Slot Allocation in Flexible Grid Optical Networks

Hasegawa Hiroshi, Yasuda Takuma, Mori Yojiro, Sato Ken-ichi

2018 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)     2018

Spectral Utilization Efficient Coarse Granular Routing Optical Networks with Resiliency against Multiple Failures

Ishikawa Tomohiro, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2018 21ST CONFERENCE ON INNOVATION IN CLOUDS, INTERNET AND NETWORKS AND WORKSHOPS (ICIN)     2018

Novel Demodulation Framework Based on Quadrature Duo-Binary/Quaternary/Octernary Spectrum Shaping and MLSE for Mitigating Spectrum Narrowing Caused by Node Traversals

Yamaoka Shuhei, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

2018 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC)     2018

Large-scale optical node architecture enabling spectral-efficiency maximization in ultra-dense WDM networks

Yamaoka Shuhei, Hashimoto Ryota, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

METRO AND DATA CENTER OPTICAL NETWORKS AND SHORT-REACH LINKS   Vol. 10560   2018

Joint Banding-node Placement and Resource Allocation for Multi-granular Elastic Optical Networks Reviewed

Jingxin Wu, Maotong Xu, Suresh Subramaniam, and Hiroshi Hasegawa

IEEE Globecom 2017     2017.12

Fast Optical Circuit Switch for Intra-Datacenter Networking Invited Reviewed

Koh UEDA, Yojiro MORI, Hiroshi HASEGAWA, Hiroyuki MATSUURA, Kiyo ISHII, Haruhiko KUWATSUKA, Shu NAMIKI, Toshio WATANABE, Ken-ichi SATO

IEICE Transactions on Communications   Vol. E100.B ( 10 ) page： 1740-1746   2017.10

Spectral Efficiency Maximization of Grouped Routing Optical Networks with Shared Protection Reviewed

Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

IEEE/OSA J. Opt. Commun. Netw.   Vol. 9 ( 10 ) page： 864-875   2017.10

First Demonstration of Subsystem-Modular Optical Cross-Connect Using Single-Module 6x6 WSS Reviewed

R. Hashimoto, S. Yamaoka, Y. Mori, H. Hasegawa, K. Sato, K. Yamaguchi, K. Seno, K. Suzuki

ECOC2017     page： Tu.2.F.2   2017.9

Joint Pre-, Inline-, and Post-Compensation of Spectrum Narrowing Caused by Traversing Multiple Optical Nodes Reviewed

Y. Mori, H. Hasegawa, K. Sato

ECOC2017     page： P1.SC3.45   2017.9

Implication of optical path cross-connect and fiber cross-connect in creating cost-effective large bandwidth optical networks

Mungun-Erdene Ganbold, Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

IEICE Society Conference 2017     page： BS-7-25   2017.9

高信頼化Grouped Routingネットワーク

長谷川浩・森洋二郎・佐藤健一

信学技報   Vol. 117 ( 186 ) page： 13-18   2017.8

超高密度波長分割多重ネットワークにおける大規模光ノードの評価

山岡修平・橋本涼太・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 117 ( 186 ) page： 47-50   2017.8

ネットワークコスト評価に基づく大規模光クロスコネクトノードアーキテクチャの性能比較

Ganbold Mungun-Erdene・安田拓真・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 117 ( 186 ) page： 19-22   2017.8

Highly reliable and large-scale subsystem-modular optical cross-connect Reviewed

Shuhei Yamakami, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

OSA Optics Express   Vol. 25   page： 17982-17994   2017.8

Novel Subcarrier Multiplexing and Subcarrier-synchronous Phase Estimation Tolerant to Laser Phase Noise Reviewed

David Martinez, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Signal Processing in Photonics Communications 2017     page： SpW1F.5   2017.7

Compact OXC architecture, design and prototype development for flexible waveband routing optical networks Reviewed

Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, Suresh Subramaniam, Ken-ichi Sato, and Osamu Moriwaki

OSA Optics Express   Vol. 25 ( 115 ) page： 15838-15853   2017.7

Theory and Progress of Large-scale Optical Switching and Elastically Hybrid Optical Switching Invited Reviewed

H. Hasegawa and K. Sato

Photonics in Switching 2017     page： PM2D.1   2017.7

Large-scale optical circuit switch architecture for intra-datacentre networking Reviewed

Yojiro Mori, Koh Ueda, Hiroshi Hasegawa, and Ken-ichi Sato

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)     2017.6

Routing, Fiber, Band, and Spectrum Assignment (RFBSA) for Multi-granular Elastic Optical Networks Reviewed

Jingxin Wu, Maotong Xu, Suresh Subramaniam, and Hiroshi Hasegawa

IEEE ICC 2017     page： ONS-05: Elastic Optical Networks   2017.5

Large-Scale Optical Node Utilizing MxM WSSs Optimally Configured for Traffic Distribution Reviewed

M. Niwa; Y. Mori; H. Hasegawa; K. Sato

IEEE Photonics Technology Letters   Vol. PP ( 99 ) page： 1-1   2017.5

Dynamic Path Provisioning and Disruption-Free Reoptimization Algorithms for Bandwidth on-Demand Services Considering Fairness Reviewed

Masahiro NAKAGAWA, Hiroshi HASEGAWA, Ken-ichi SATO

IEICE Transactions on Communications   Vol. E100.B (2017) ( 4 ) page： 536-547   2017.4

多重故障を考慮した高信頼化Grouped Routingネットワーク設計法

石川智啓・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2017年総合大会     page： B-12-15   2017.3

Optical tunable filter for gridless ROADM Reviewed

M. Niwa, Y. Mori, H. Hasegawa and K. Sato

2017 Optical Fiber Communications Conference and Exhibition (OFC)     page： 1-3   2017.3

Highly reliable large-scale optical cross-connect architecture utilizing M×M wavelength-selective switches Reviewed

S. Yamakami, M. Niwa, Y. Mori, H. Hasegawa and K. Sato

2017 Optical Fiber Communications Conference and Exhibition (OFC)     page： 1-3   2017.3

Novel intra- and inter-datacenter converged network exploiting space- and wavelength-dimensional switches Reviewed

K. Ueda, Y. Mori, H. Hasegawa and K. Sato

2017 Optical Fiber Communications Conference and Exhibition (OFC)     page： 1-3   2017.3

Dynamic control of coarse/fine hybrid granular routing optical networks Reviewed

Y. Ito, Y. Mori, H. Hasegawa and K. Sato

2017 Optical Fiber Communications Conference and Exhibition (OFC)     page： 1-3   2017.3

Impairment mitigation in noncoherent optical transmission enabled with machine learning for intra-datacenter networks Reviewed

Keisuke Ito, Masaki Niwa, Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

SPIE Photonics West 2017     page： 10131-9   2017.2

Efficient network expansion strategy for elastic optical networks that considers channel capacity upgrades Reviewed

Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

SPIE Photonics West 2017     page： 10129-8   2017.2

Large-Scale Optical Switch Utilizing Multistage Cyclic Arrayed-Waveguide Gratings for Intra-Datacenter Interconnection Reviewed

K. Ueda, Y. Mori, H. Hasegawa and K. Sato

IEEE Photonics Journal   Vol. 9 ( 1 ) page： 1-12   2017.2

Algorithm for raising OXC port count to meet traffic growth at minimum cost Invited Reviewed

K. Sato, Y. Mori, H. Hasegawa and K. Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 9 ( 2 ) page： A263-A270   2017.2

Tipping point for the future scalable OXC: what size MxM WSS is needed? Invited Reviewed

M. Niwa, Y. Mori, H. Hasegawa and K. Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 9 ( 1 ) page： A18-A25   2017.1

First Demonstration of Subsystem-Modular Optical Cross-Connect Using Single-Module 6x6 WSS

Hashimoto Ryota, Yamaoka Shuhei, Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi, Yamaguchi Keita, Seno Kazunori, Suzuki Kenya

43RD EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC 2017)     2017

Routing, Fiber, Band, and Spectrum Assignment (RFBSA) for Multi-granular Elastic Optical Networks

Wu Jingxin, Xu Maotong, Subramaniam Suresh, Hasegawa Hiroshi

2017 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)     2017

Large-Scale Optical Circuit Switch Architecture for Intra-Datacentre Networking

Mori Yojiro, Ueda Koh, Hasegawa Hiroshi, Sato Ken-ichi

2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)     2017

Joint Pre-, Inline-, and Post-Compensation of Spectrum Narrowing Caused by Traversing Multiple Optical Nodes

Mori Yojiro, Hasegawa Hiroshi, Sato Ken-ichi

43RD EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC 2017)     2017

Joint Banding-node Placement and Resource Allocation for Multi-granular Elastic Optical Networks

Wu Jingxin, Xu Maotong, Subramaniam Suresh, Hasegawa Hiroshi

GLOBECOM 2017 - 2017 IEEE GLOBAL COMMUNICATIONS CONFERENCE     2017

粗粒度ルーティング光ネットワークの設備増設設計とその性能評価

齋藤裕・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 116 ( 307 ) page： 13-18   2016.11

Dynamic Router Performance Control Utilizing Support Vector Machines for Energy Consumption Reduction Reviewed

H. Kawase, Y. Mori, H. Hasegawa, and K. Sato

IEEE Transactions on Network and Service Management     page： TNSM-2015-00912   2016.11

Large-Scale and Simple-Configuration Optical Switch Enabled by Asymmetric-Port-Count Subswitches Reviewed

Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society     page： ThG1.2   2016.10

Demonstration of Virtual Direct Link Optical Networks Reviewed

Y. Ito, M. Niwa, K. Ueda, Y. Mori, H. Hasegawa, and K. Sato

2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society     page： WD1.5   2016.10

Demonstration of VirNovel Optical-Node Architecture Utilizing Asymmetric-Multiport Wavelength-Selective Switchestual Direct Link Optical Networks Reviewed

M. Niwa, Y. Mori, H. Hasegawa, and K. Sato

2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society     page： WD2.3   2016.10

Highly Reliable and Cost-Effective Large-Scale Optical Cross-Connect Architecture Reviewed

S. Yamakami, M. Niwa, Y. Mori, H. Hasegawa, and K. Sato

2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society     page： WD2.4   2016.10

Experimental Demonstration of 2,160x2,160 Optical Circuit Switch for Intra-datacenter Networking Reviewed

Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, and Shu Namiki

2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society     page： MB4.2   2016.10

Node Architecture and Design of Flexible Waveband Routing Optical Networks Reviewed

H. Hasegawa, S. Subramaniam, and K. Sato

IEEE/OSA JOCN   Vol. 8 ( 10 ) page： 734-744   2016.10

データセンタ用大規模光スイッチの設計

永井宏樹・上田恒・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2016年ソサイエティ大会     page： B-12-10   2016.9

定期的な設備増設状況下におけるグループ化光パスルーティングネットワークの性能評価

齋藤裕・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2016年ソサイエティ大会     page： B-12-13   2016.9

周期的な設備増設を考慮したセミフレキシブルグリッド光ネットワークの性能評価

安田拓真・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2016年ソサイエティ大会     page： B-12-12   2016.9

Performance comparison of grouped optical path routing networks that adopt different granular shared protection schemes

Tomohiro Ishikawa, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato

IEICE Society Conference 2016     page： BS-5-2   2016.9

Evaluation and Performance Modeling of Two OXC Architectures Invited Reviewed

J. Wu, M. Xu, S. Subramaniam and H. Hasegawa

2016 IEEE 37th Sarnoff Symposium     page： T3-2   2016.9

MxM WSS Based ROADM Architecture with Topology-Insensitive Routing Performance Reviewed

M. Niwa, Y. Mori, H. Hasegawa, and K. Sato

ECOC2016     page： W.4.P1.SC4.7   2016.9

距離及びホップ数に適応的なサブキャリア変調を用いた周波数利用効率最大化

磯野祐馬・丹羽真規・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 116 ( 205 ) page： 53-57   2016.9

Spectral-Efficiency Maximization with Subcarrier-Multiplexed Hybrid-QAM Signals Adaptive to Distance and Hop Count Reviewed

Yuma Isono, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

ECOC2016     page： Th.1.E.3   2016.9

Optical Networking Utilizing Virtual Direct Links Reviewed

Y. Ito, Y. Mori, H. Hasegawa, and K. Sato

ECOC2016     page： W.4.P1.SC6.3   2016.9

Recent Progress in Large-scale Optical Switches for Intra-datacenter Interconnection Invited Reviewed

K. Ueda, Y. Mori, H. Hasegawa, and K. Sato

PIERS2016     page： 2P4   2016.8

Demonstration of 1,440x1,440 Fast Optical Circuit Switch for Datacenter Networking Reviewed

Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, Shu Namiki, Toshio Watanabe, Ken-ichi Sato

21st OptoElectronics and Communications Conference (OECC2016)/Photonics in Switching 2016 (PS2016)     page： WF1-3   2016.7

Spectral Efficient Grouped Routing Network that Applies Dynamic Optical Path Grooming Reviewed

Yuki Terada, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

21st OptoElectronics and Communications Conference (OECC2016)/Photonics in Switching 2016 (PS2016)     page： TuA1-1   2016.7

Hardware Scale Analysis and Prototype Development of Flexible Waveband Routing OXCs Reviewed

Tomohiro Ishikawa, Masaki Niwa, Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Suresh Subramaniam, Ken-ichi Sato, Osamu Moriwaki

21st OptoElectronics and Communications Conference (OECC2016)/Photonics in Switching 2016 (PS2016)     page： TuA1-4   2016.7

Survivable Grouped Routing Optical Networks With Dedicated Path Protection Reviewed

H. Hasegawa, Y. Mori, and K. Sato

IEICE Transactions on Communications   Vol. E99-B ( 7 ) page： -   2016.7

Disruption-Free Expansion of Protected Optical Path Networks that Utilize Subsystem Modular OXC Nodes Reviewed

Kosuke Sato, Hiroshi Hasegawa, and Ken-ichi Sato

IEEE/OSA J. Opt. Commun. Netw.   Vol. 8 ( 7 ) page： 476-485   2016.7

A Compact OXC Node Architecture That Exploits Dynamic Path Bundling and Routing Reviewed

T. Ishikawa, H. Hasegawa, S. Subramaniam, and K. Sato

ONDM2016     page： S8-3   2016.5

Large-Scale and Simple-Configuration Optical Switch Enabled by Asymmetric-Port-Count Subswitches Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. i. Sato and T. Watanabe

IEEE Photonics Journal,   Vol. 8 ( 2 ) page： 1-10   2016.4

Novel Optical-Node Architecture Utilizing Asymmetric-Multiport Wavelength-Selective Switches Reviewed

M. Niwa, Y. Mori, H. Hasegawa and K. Sato

IEEE Photonics Journal,   Vol. 8 ( 2 ) page： 1-10   2016.4

Highly spectral efficient networks based on grouped optical path routing Reviewed

Y. Terada, Y. Mori, H. Hasegawa, and K. Sato

OSA Optics Express   Vol. 24 ( 6 ) page： 6213-6228   2016.3

MxM WSSを用いた大規模光ノード構成法

丹羽真規・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2016年総合大会     page： B-10-77   2016.3

サブシステムモジュラ光クロスコネクトにおけるルーティング性能のノード次数依存

伊藤圭佑・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2016年総合大会     page： B-10-23   2016.3

高信頼サブシステムモジュラ光クロスコネクト

山上修平・丹羽真規・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2016年総合大会     page： B-10-22   2016.3

機械学習制御に基づくルータの低消費電力化 (受賞に伴う奨励講演)

川瀬弘嗣・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 115 ( 497 ) page： 47-51   2016.3

高信頼光クロスコネクト構成

山上修平・丹羽真規・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 115 ( 497 ) page： 17-20   2016.3

Algorithm for raising OXC port count to meet traffic growth at minimum-cost Reviewed

K. Sato, Y. Mori, H. Hasegawa, and K. Sato

OSA Optical Fiber Communication Conference (OFC2016)     page： W4B.2   2016.3

Low-Loss and Large-Scale Optical Switch Utilizing Asymmetric-Port-Count Cyclic AWGs Reviewed

K. Ueda, Y. Mori, H. Hasegawa, and K. Sato

ICP2016     page： Dev-8   2016.3

Cycle-Slip-Tolerant Decision-Boundary Creation with Machine Learning Reviewed

H. Kawase, Y. Mori, H. Hasegawa, and K. Sato

ICP2016     page： Com-4   2016.3

Spectrum Utilization Maximization in Coarse Granular Optical Routing Networks that Employ Fine Granular Shared Protection Reviewed

T. Ishikawa, Y. Mori, H. Hasegawa, K. Sato

Design of Reliable Communication Networks 2016 (DRCN2016)     page： D-1   2016.3

Tipping point for the future scalable OXC -What size MxM WSS is needed?-, Reviewed

M. Niwa, Y. Mori, H. Hasegawa, K. Sato

OSA Optical Fiber Communication Conference (OFC2016)     page： W4B.5   2016.3

Highly Spectral Efficient Elastic Optical Network Employing Grouped Optical Path Routing Reviewed

Y. Terada, Y. Mori, H. Hasegawa, and K. Sato

OSA Optical Fiber Communication Conference (OFC2016)     page： W2A.48   2016.3

Large-scale and simple-configuration optical switch enabled by asymmetric-port-count sub-switches Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe

IEEE Photonics Journal   ( 99 ) page： 1   2016.2

Demonstration of 720x720 optical fast circuit switch for intra-datacenter networks Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Ishii, H. Kuwatsuka, S. Namiki, H. Matsuura, and K. Sato

SPIE Photonics West 2016   Vol. Proc. SPIE 9775, Next-Generation Optical Networks for Data Centers and Short-Reach Links III   page： 977518   2016.2

Architecture and design of optical path networks utilizing waveband virtual links Reviewed

Y. Ito, Y. Mori, H. Hasegawa, and K. Sato

SPIE Photonics West 2016   Vol. Proc. SPIE 9773, Optical Metro Networks and Short-Haul Systems VII   page： 977319   2016.2

Real-time optical path control method that utilizes multiple support vector machines for traffic prediction Reviewed

H. Kawase, Y. Mori, H. Hasegawa, and K. Sato

SPIE Photonics West 2016   Vol. Proc. SPIE 9773, Optical Metro Networks and Short-Haul Systems VII   page： 977318   2016.2

高信頼化粗粒度ルーティング光ネットワーク

長谷川浩・森洋二郎・佐藤健一

信学技報   Vol. 115 ( 430 ) page： 181-187   2016.1

リンク容量増大とノード拡張性を同時達成する光ネットワークアーキテクチャ

寺田佑貴・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 115 ( 407 ) page： 7-12   2016.1

Large-Scale Optical-Switch Prototypes Utilizing Cyclic Arrayed-Waveguide Gratings for Datacenters Invited Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Sato and T. Watanabe

IEEE Journal of Lightwave Technology   Vol. 34 ( 2 ) page： 608-617   2016.1

Optimal nonuniform wavebanding in WDM mesh networks Reviewed

Jingxin Wu, Suresh Subramaniam , Hiroshi Hasegawa

Springer Photonic Network Communications     page： 1-10   2015.11

Differential Reliability Path Accommodation Design and Reconfiguration in Virtualized Multi-Layer Transport Network Reviewed

Akihiro Kadohata, Takafumi Tanaka, Atsushi Watanabe, Akira Hirano, Hiroshi Hasegawa, and Ken-ichi Sato

IEICE Transactions on Communications   Vol. E98-B ( 11 ) page： 2151-2159   2015.11

Criteria for Selecting Subsystem Configuration in Creating Large-Scale OXCs Reviewed

Yasuhiro Tanaka, Hiroshi Hasegawa, and Ken-ichi Sato

IEEE/OSA J. Opt. Commun. Netw.   Vol. 7 ( 10 ) page： 1009-1017   2015.10

Shared protected grouped optical path routing network design employing iterative path group relocation Reviewed

T. Isikawa, Y. Mori, H. Hasegawa, and K. Sato

2015 7th International Workshop on Reliable Networks Design and Modeling (RNDM2015)     page： 78 - 84   2015.10

Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks

Akihiro Kadohata, Atsushi Watanabe, Akira Hirano, Hiroshi Hasegawa, and Ken-ichi Sato

IEICE Transactions on Communications   Vol. E98-B ( 10 ) page： 2014-2021   2015.10

Large-Scale Optical-Switch Prototypes Utilizing Cyclic Arrayed-Waveguide Gratings for Datacenters Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe

IEEE Journal of Lightwave Technology   ( 99 ) page： 1   2015.10

Novel network control scheme that can substantially reduce link and node costs simultaneously Reviewed

Y. Terada, Y. Mori, H. Hasegawa, and K. Sato

2015 European Conference on Optical Communication (ECOC2015)     page： 1-3   2015.9

Large-scale optical switch with simplified sub-switch connections for datacenter application Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe

2015 International Conference on Photonics in Switching (PS2015)     page： 351-353   2015.9

Cost Effective and Resilient Optical Network that Offers Seamless Network Expansion via Subsystem Modular OXCs and Inter-node Interconnection Optimization Reviewed

K. Sato, Y. Mori, H. Hasegawa, K. Sato

2015 International Conference on Photonics in Switching (PS2015)     page： WeIII3-3   2015.9

Highly scalable and compact ROADM architecture that exploits MxN wavelength-selective switches Reviewed

M. Niwa, Y. Mori, H. Hasegawa, and K. Sato

2015 International Conference on Photonics in Switching (PS2015)     page： 127 - 129   2015.9

Evaluation of frequency utilization enhancement with transmission-characteristics-aware grouped optical path routing Reviewed

Y. Terada, Y. Mori, H. Hasegawa, K. Sato, and T. Tanaka

2015 International Conference on Photonics in Switching (PS2015)     page： 256 - 258   2015.9

Impairment-aware optical multicast tree design with modulation format optimization Reviewed

S. Deb, H. Hasegawa, Y. Mori, and K. Sato

2015 International Conference on Photonics in Switching (PS2015)     page： 250 - 252   2015.9

Comparison of OXC Node Architectures for WDM and Flex-Grid Optical Networks Invited Reviewed

J. Wu, S. Suburamaniam, and H. Hasegawa

24th International Conference on Computer Communication and Networks (ICCCN2015)     page： 1-8   2015.8

Grouped Routing仮想光リンクを導入した大規模光パスネットワークの動的コントロール

伊東優作・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 115 ( 204 ) page： 49-53   2015.8

機械学習制御に基づくルータの低消費電力化

川瀬弘嗣・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 115 ( 204 ) page： 31-35   2015.8

Wavelength Path Signalling for WSS/WBSS Combined Optical Switches in Hierarchical Optical Networks Reviewed

T. Miyazawa, T. Hirayama, H. Harai, K. Ueda, Y. Mori, H. Hasegawa, K. Sato

ICTON2015     page： -   2015.7

Path Accommodation Design and Reconfiguration for Different Reliability Classes in Virtualized Multi-layer Transport Network Reviewed

A. Kadohata, T. Tanaka, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato

OECC2015     page： JTuB.24   2015.6

Experimental Demonstration of Multi-Granular Optical-Path Network Utilizing Wavelength/Waveband-Selective Switches Reviewed

K. Ueda, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, T. Miyazawa and H. Harai

OECC2015     page： JThB.15   2015.6

OFC2015報告：光ネットワーク関連 Invited

長谷川 浩・森 洋二郎・佐藤 健一

信学技報   ( OCS2015-3/OPE2015-3 ) page： 9-12   2015.6

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 Reviewed

Shoichi Takashina, Hiroto Ishida, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, and Toshio Watanabe

OSA Optics Express   Vol. 23 ( 11 ) page： 14796-14805   2015.6

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 Reviewed

Shoichi Takashina, Hiroto Ishida, Masaki Niwa, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, and Toshio Watanabe

OSA Optics Express   Vol. 23 ( 11 ) page： 14796-14805   2015.6

Hardware Scale and Performance Evaluation of Compact Sub-system Modular OXC that Adopts Tailored Add/Drop Architecture Reviewed

Hiroto Ishida, Hiroshi Hasegawa, and Ken-ichi Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 7 ( 6 ) page： 586-595   2015.6

Flexible Waveband Routing Optical Networks Reviewed

H. Hasegawa, S. Subramaniam, and K. Sato

ICC2015     page： ONS   2015.6

Experimental Demonstration of Multi-Granular Optical-Path Network Utilizing Wavelength/Waveband-Selective Switches Reviewed

K. Ueda, M. Niwa, Y. Mori, H. Hasegawa, K. Sato, T. Miyazawa and H. Harai

OECC2015     page： JThB.15   2015.6

Path Accommodation Design and Reconfiguration for Different Reliability Classes in Virtualized Multi-layer Transport Network Reviewed

A. Kadohata, T. Tanaka, A. Watanabe, A. Hirano, H. Hasegawa, and K. Sato

OECC2015     page： JTuB.24   2015.6

Resilient Grouped Routing Optical Networks With Finely Granular Protection Reviewed

H. Hasegawa, Y. Mori, and K. Sato

ONDM2015     page： S7.3   2015.5

Optimal Nonuniform Wavebanding in WDM Mesh Networks Reviewed

J. Wu, S. Suburamaniam, and H. Hasegawa

ONDM2015     page： S5.3   2015.5

Integrity Enhancement of Flexible/Semi-flexible Grid Networks that Minimizes Disruption in Spectrum Defragmentation and Bitrate-Dependent Blocking Reviewed

Z. Shen, H. Hasegawa, and K. Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 7 ( 4 ) page： 235-247   2015.4

データセンタ内ネットワークに適した大規模光スイッチ構成

上田恒・森洋二郎・長谷川浩・佐藤健一・渡辺俊夫

第11回PN研究会学生ワークショップ     page： 7-10   2015.3

2段階ルーティング光クロスコネクトノードの性能評価

岡孝一郎・長谷川浩・佐藤健一

電子情報通信学会2015年総合大会     page： B-12-5   2015.3

将来のシステム更新に適応するエラスティック光パスネットワーク動的制御法

草野太希・沈志舒・長谷川浩・佐藤健一

電子情報通信学会2015年総合大会     page： B-12-22   2015.3

繰り返し再配置に基づく高信頼粗粒度ルーティング光パスネットワーク設計法

石川智啓・森洋二郎・長谷川浩・佐藤健一

電子情報通信学会2015年総合大会     page： B-12-14   2015.3

Performance analysis of large-scale OXC that enables dynamic modular growth Reviewed

Yasuhiro Tanaka, Hiroshi Hasegawa, and Ken-ichi Sato

OSA Optics Express   Vol. 23 ( 5 ) page： 5994-6006   2015.3

A Novel Routing and Frequency Slot Assignment Scheme that Can Adapt to Transmission Speed Migration Reviewed

Z. Shen, T. Kusano, H. Hasegawa, and K. Sato

OFC2015     page： W1I.2   2015.3

Grouped Routingに基づく高周波数利用効率ネットワーク

寺田佑貴・森洋二郎・長谷川浩・佐藤健一

信学技報   ( PN2014-90 ) page： 75-80   2015.3

階層化光ネットワークにおけるWSS/WBSS混合光スイッチのための波長パスシグナリング実験

宮澤高也・平山孝弘・原井洋明・上田恒・森洋二郎・長谷川浩・佐藤健一

信学技報   ( PN2014-98 ) page： 121-126   2015.3

Large Scale Optical Cross-connect: architecture, performance analysis, and feasibility demonstration Invited Reviewed

H. Hasegawa and K. Sato

OFC2015     page： W3J.1   2015.3

Residual Capacity Aware Dynamic Control of GRE-based Routing Optical Path Networks under Traffic Growth Model Reviewed

Y. Terada, Y. Mori, H. Hasegawa, and K. Sato

OFC2015     page： Th1I.6   2015.3

Large-Scale Optical-switch Prototype Compactly Implemented with Novel Functional Configuration Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe

OFC2015     page： W3D.1   2015.3

Highly Scalable Subsystem Modular OXC Nodes that Host Tailored Add/drop Mechanism Reviewed

H. Ishida, H. Hasegawa and K. Sato

OFC2015     page： Th2A.47   2015.3

Demonstration of Large-Port-Count and Compact ROADM that Exhibits Virtual-C/D/C Performance Reviewed

S. Takashina, H. Ishida, Y. Mori, H. Hasegawa, and K. Sato

OFC2015     page： W3J.6   2015.3

Wavelength-Tunable Filters Utilizing Arrayed Waveguide Gratings for Colorless/Directionless/Contentionless Optical Signal Drop in ROADMs Reviewed

S. Takashina, Y. Mori, H. Hasegawa, K. Sato, T. Watanabe

IEEE Photonics Journal   Vol. 7 ( 1 ) page： article no. 7100511   2015.2

A novel optical path routing network that combines coarse granularity optical multicast with fine granularity add/drop and block Reviewed

M. M. Soares, Y. Mori, H. Hasegawa and K. Sato

Proc. SPIE 9388, Optical Metro Networks and Short-Haul Systems VII, 93880O (February 7, 2015);     2015.2

Wavelength-tunable filter utilizing non-cyclic arrayed waveguide grating to create colorless, directionless, contentionless ROADMs Reviewed

M. Niwa, S. Takashina, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe

Proc. SPIE 9388, Optical Metro Networks and Short-Haul Systems VII, 938807 (February 7, 2015)     2015.2

Router power reduction by active performance control realized with support vector machines Reviewed

H. Kawase, H. Hasegawa, and K. Sato

ICNC2015     page： 530-535   2015.2

スケーラブルな大規模光クロスコネクト構成技術 Invited

長谷川浩・佐藤健一

第35回レーザー学会年次大会     page： G.11aVI.3   2015.1

スケーラブルな大規模低損失かつ低消費電力なアレイ導波路回折格子型波長可変フィルタ光クロスコネクト構成技術

丹羽真規・高科翔一・森洋二郎・長谷川浩・佐藤健一

第35回レーザー学会年次大会     page： G.11pVI.3   2015.1

共有型プロテクションを導入した粗粒度ルーティング光パスネットワーク

石川智啓・森洋二郎・長谷川浩・佐藤健一

第一回Japan Photonic Network デザインコンテスト     page： 25-28   2014.11

信号帯域幅毎の設定目標周波数を導入した光パス経路・周波数スロット割当法

草野太希・沈志舒・長谷川浩・佐藤健一

電子情報通信学会2014年ソサイエティ大会     page： B-12-11   2014.9

Impact of Branching in Grouped Routing Optical Networks in a Dynamic Scenario

Mauro Soares, Hiroshi Hasegawa, Ken-ichi Sato

IEICE 2014 Society Conference     page： B-12-13   2014.9

準フレキシブルグリッドネットワークにおけるパス再配置の効果

沈志舒・長谷川浩・佐藤健一

電子情報通信学会2014年ソサイエティ大会     page： B-12-12   2014.9

Verification of High Frequency Spectrum Utilization in Grouped Optical Path Routing Networks under Traffic Growth Scenario Reviewed

Y. Terada, Y. Mori, H. Hasegawa, and K. Sato

European Conference on Optical Communications (ECOC2014)     page： We.3.5.1   2014.9

Novel Large-port-count Optical-switch Architecture for Optical Interconnection in Datacenter Reviewed

K. Ueda, Y. Mori, H. Hasegawa, K. Sato and T. Watanabe

European Conference on Optical Communications (ECOC2014)     page： We.3.5.1   2014.9

Low-loss and Low-power-consumption Wavelength TunableFilter Enabling Colorless/Directionless/Contentionless Optical Drop in ROADMs Reviewed

S. Takashina, Y. Mori, H. Hasegawa, K. Sato and T. Watanabe

European Conference on Optical Communications (ECOC2014)     page： We.3.5.2   2014.9

周回性アレイ導波路回折格子を用いた光スイッチの最適設計

上田恒・森洋二郎・長谷川浩・佐藤健一

信学技報   ( PN2014-19 ) page： 49-54   2014.9

Blocking Performance of Multi-Stage Routing Optical Path Networks Reviewed

Hai-Chau Le, Hiroshi Hasegawa, Ken-ichi Sato

OECC/ACOFT2014     page： TU6A-6   2014.7

Design of Reliable Optical Path Networks that Consist of Large Scale Subsystem-Modular OXC Nodes Reviewed

K. Sato, H. Hasegawa and K. Sato

OECC/ACOFT2014     page： MO1A-3   2014.7

Dynamic Control of Optical Path Networks by Utilizing Adaptive Wavelength Grouping and Link Fiber Selection Reviewed

K. Oka, H. Hasegawa, and K. Sato

Photonics in Switching 2014     page： PM4C.2   2014.7

Optimum Power-budget Allocation for Large-scale Optical Switches Utilizing Cyclic Arrayed Waveguide Gratings Reviewed

K. Ueda, Y. Mori, H. Hasegawa, and K. Sato

Photonics in Switching 2014     page： JT5C.3   2014.7

Disruption Minimized Spectrum Defragmentation and Equalization of Bitrate Dependent Blocking in Semi-flexible Grid Networks Reviewed

Z. Shen, H. Hasegawa, and K. Sato

Photonics in Switching 2014     page： PW1B.2   2014.7

Cost Effective and Reliable Networking that Utilizes Subsystem Modular OXC Nodes

K. Sato, H. Hasegawa and K. Sato

WINS Workshop 2014     page： -   2014.7

A Novel Semi-flexible Grid Network Utilizing Aligned Frequency Slot Assignment

Z. Shen, H. Hasegawa, and K. Sato

WINS Workshop 2014     page： -   2014.7

Grouped Routingによるファイバ周波数利用効率の向上

寺田佑貴・森洋二郎・長谷川浩・佐藤健一

信学技報   Vol. 114 ( 109 ) page： 1-5(PN2014-1)   2014.6

A Novel Flexible Grid/Semi-flexible Grid Optical Path Network Design Algorithm that Reserves Exclusive Frequency Slots for High Bitrate Signals Reviewed

Z. Shen, H. Hasegawa, and K. Sato

ONDM2014     page： S10.3   2014.5

Design of Grouped Routing Entity (GRE)-based Optical Networks with 100% Signal Quality Guarantee Reviewed

A. Jirattigalachote, Y. Taniguchi, T. Ban, P. Monti, L. Wosinska, H. Hasegawa, and K. Sato

ONDM2014     page： S8.2   2014.5

機械学習に基づく動的性能制御によるルータの低消費電力化

川瀬弘嗣・長谷川浩・佐藤健一

電子情報通信学会2014年総合大会     page： B-7-29   2014.3

2段階ルーティング型光パスネットワークの動的制御

岡孝一郎・長谷川浩・佐藤健一

電子情報通信学会2014年総合大会     page： B-12-12   2014.3

電気クロスコネクト容量を考慮した階層化パスネットワークの動的制御

平沢佑矩・長谷川浩・佐藤健一

電子情報通信学会2014年総合大会     page： B-12-11   2014.3

初期割当と逐次再配置による無瞬断階層化パス再配置法

大澤尚晃・長谷川浩・佐藤健一

電子情報通信学会2014年総合大会     page： B-12-10   2014.3

エラスティック光パスネットワークにおける高ビットレート信号専用周波数領域を用いた信号割当法

沈志舒・長谷川浩・佐藤健一

電子情報通信学会2014年総合大会     page： B-12-5   2014.3

Port Count Analysis of Wavelength Routing Switch that Utilizes Cyclic AWGs

Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

IEICE General Conference 2014     page： BS-1-26   2014.3

Fiber Capacity Enhancement Employing Grouped Optical Path Routing

Yuki Terada, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

IEICE General Conference 2014     page： BS-1-30   2014.3

機械学習に基づくルータの動的性能制御による消費電力削減効果

川瀬弘嗣・長谷川浩・佐藤健一

第10回PN研究会学生ワークショップ     page： 5-8   2014.3

サブシステムモジュラー型ノードから構成される光パスネットワークの高信頼化

佐藤晃輔・長谷川浩・佐藤健一

第10回PN研究会学生ワークショップ     page： 17-20   2014.3

A 204.8 Tbps Throughput 64x64 Optical Cross-Connect Prototype that Allows C/D/C Add/Drop Reviewed

K. Takaha, Y. Mori, H. Hasegawa, K. Sato, and T. Watanabe

OFC/NFOEC2014     page： M2K.1   2014.3

階層化光パスネットワークにおける波長変換・波長群変換器の導入効果 Invited

沈志舒・長谷川浩・佐藤健一

信学技報   Vol. 113 ( 455 ) page： 43-48(PN2013-98)   2014.3

Performance Evaluations of Large-Scale OXC that Achieves Modular and Hitless Expansion Reviewed

Y. Tanaka, H. Hasegawa and K. Sato

OFC/NFOEC2014     page： W2A.50   2014.3

Fiber-nonlinearity Limitation of Transmission Distances in Ultra-dense Gridless Photonic Networks Reviewed

Y. Mori, H. Hasegawa and K. Sato

OFC/NFOEC2014     page： W2A.33   2014.3

Hardware Scale and Performance Evaluation of Compact OXC Add/Drop Architecture Reviewed

H. Ishida, H. Hasegawa and K. Sato

OFC/NFOEC2014     page： W1C.7   2014.3

Enhancement of Fiber Frequency Utilization by Employing Grouped Optical Path Routing Reviewed

Y. Terada, Y. Mori, H. Hasegawa, and K. Sato

OFC/NFOEC2014     page： W1C.6   2014.3

Low Crosstalk Wavelength Tunable Filter that Utilizes Symmetric and Asymmetric Mach-Zehnder Interferometers Reviewed

S. Takashina, Y. Mori, H. Hasegawa, K. Sato and T.Watanabe

OFC/NFOEC2014     page： Th3F.6   2014.3

低クロストークを実現したアレイ導波路回折格子型光可変フィルタの構成

高科翔一，森洋二郎，長谷川浩，佐藤健一，渡辺俊夫

レーザー学会学術講演会第34回年次大会     page： G121aVII04   2014.1

大規模光クロスコネクトを用いた超大容量光ノード

高羽健介，森 洋二郎，長谷川 浩，佐藤健一，渡辺俊夫

レーザー学会学術講演会第34回年次大会     page： G121aVII06   2014.1

Cyclic AWGを用いた大規模波長ルーティングスイッチ

上田 恒，森 洋二郎，長谷川 浩，佐藤健一

レーザー学会学術講演会第34回年次大会     page： G121aVII05   2014.1

A novel elastic optical path network that utilizes bitrate-specific anchored frequency slot arrangement Reviewed

Zhi-shu Shen, Hiroshi Hasegawa, Ken-ichi Sato, Takafumi Tanaka, and Akira Hirano

OSA Optics Express   Vol. 22 ( 3 ) page： 3169-3179   2014.1

Large capacity optical networks applying multi-stage hetero-granular optical path routing Reviewed

Hai-Chau Le, Hiroshi Hasegawa, Ken-ichi Sato

Elsevier Optical Switching and Networking   Vol. 11 ( A ) page： 105-112   2014.1

Effectiveness of Wavelength/Waveband Conversion and Its Allowable Cost Bound for Hierarchical Optical Path Networks Reviewed

Z. Shen, H. Hasegawa, and K. Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 5 ( 11 ) page： 1262-1274   2013.11

A comparison of large-scale selective switch-based optical cross-connects Reviewed

Hai-Chau Le, Hiroshi Hasegawa, Ken-ichi Sato

2013 International Conference on Advanced Technologies for Communications (ATC)     page： 55-59   2013.11

人口分布に基づくトラヒックが日本版フォトニックネットワークモデルに与える影響

廣田悠介・坂野寿和・築島幸男・長谷川浩・釣谷剛宏・荒川伸一・戸出英樹

電子情報通信学会2013年ソサイエティ大会     page： B-12-8   2013.9

多段型波長ルーティングスイッチにおける接続最適化

長谷川 浩, 佐藤 健一

電子情報通信学会2013年ソサイエティ大会     page： B-12-3   2013.9

サブシステムモジュラー型光クロスコネクトノードにおけるAdd/Drop アーキテクチャのハードウェア規模削減効果

石田 寛人, 長谷川 浩, 佐藤 健一

電子情報通信学会2013年ソサイエティ大会     page： B-12-4   2013.9

無瞬断増設が可能なサブシステムモジュラー構成ノードアーキテクチャ

田中康寛, 長谷川 浩, 佐藤 健一

電子情報通信学会2013年ソサイエティ大会     page： B-12-5   2013.9

複数の周波数グリッドを導入したエラスティック光パスネットワークアーキテクチャ

沈 志舒, 長谷川 浩, 佐藤 健一

電子情報通信学会2013年ソサイエティ大会     page： B-12-6   2013.9

エラスティック光パスネットワークの最適化 Invited

長谷川 浩, 佐藤 健一

電子情報通信学会2013年ソサイエティ大会     page： BI-2-2   2013.9

A large-scale wavelength routing optical switch for data center networks Invited Reviewed

K. Sato, H. Hasegawa, T. Niwa, T. Watanabe

IEEE Communications Magazine   Vol. 51 ( 9 ) page： 46-52   2013.9

Performance Evaluations of Large-scale OXCs that Utilize Multi-stage Hetero-granular Optical Path Switching Reviewed

Hai-Chau Le, Hiroshi Hasegawa, Ken-ichi Sato

ECOC2013     page： Th.2.E.3   2013.9

Subsystem Modular OXC Architecture that Achieves Disruption Free Port Count Expansion Reviewed

Y. Tanaka, Y. Iwai, H. Hasegawa, and K. Sato

ECOC2013     page： Th.2.E.4   2013.9

A Novel Semi-flexible Grid Optical Path Network that Utilizes Aligned Frequency Slot Arrangement Reviewed

Z. Shen, H. Hasegawa, K. Sato, T. Tanaka, and A. Hirano

ECOC2013     page： We.2.E.2   2013.9

Evaluation of Hardware Requirements for Largescale OXC Architecture Employing Wavelength Switching and Fiber Selection Reviewed

Toshinori Ban, Hai-Chau Le, Hiroshi Hasegawa, and Ken-ichi Sato

The 18th OptoElectronics and Communications Conference (OECC2013)     page： WT2-2   2013.7

Development of Ultra-Compact 8x8 Waveband Cross-connect Reviewed

Kensuke Takaha, Toshinori Ban, Hiroshi Hasegawa, Kenichi Sato, Hiroshi Takahashi, and Masayuki Okuno

The 18th OptoElectronics and Communications Conference (OECC2013)     page： WT2-3   2013.7

Performance Evaluation of Large-scale OXC Architectures that Utilize Intra-node Routing Restriction Invited Reviewed

Hai-Chau Le, Toshinori Ban, Hiroshi Hasegawa, and Ken-ichi Sato

The 18th OptoElectronics and Communications Conference (OECC2013)     page： MQ2-2   2013.7

An efficient add/drop architecture for large-scale subsystem-modular OXC Reviewed

Hiroto Ishida, Hiroshi Hasegawa, Ken-ichi Sato

2013 15th International Conference on Transparent Optical Networks (ICTON 2013)     page： We.A1.5   2013.6

日本の地域特性を考慮したフォトニックネットワークモデルの検討

坂野 寿和, 築島 幸男, 長谷川 浩, 釣谷 剛宏, 廣田 悠介, 荒川 伸一, 戸出 英樹

信学技報   Vol. 113 ( 91 ) page： PN2013-1(pp. 1-6)   2013.6

波長変換・波長群変換器の導入による階層化光パスネットワークのコスト削減効果

沈 志舒, 長谷川 浩, 佐藤 健一

信学技報   Vol. 113 ( 91 ) page： PN2013-5(pp. 25-30)   2013.6

Topological Characteristic of Japan Photonic Network Model

Shin'ichi Arakawa, Toshikazu Sakano, Yukio Tukishima, Hiroshi Hasegawa, Takehiro Tsuritani, Yusuke Hirota, Hideki Tode

IEICE Technical Report   Vol. 113 ( 91 ) page： PN2013-2(pp.7-12)   2013.6

Coarse Granular Optical Routing Networks Utilizing Fine Granular Add/Drop Reviewed

Yuki Taniguchi, Hiroshi Hasegawa, Ken-ichi Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 5 ( 7 ) page： 774 - 783   2013.6

Efficient Shared Protection Network Design Algorithm that Iterates Path Relocation with New Resource Utilization Metrics Reviewed

Masakazu SATO, Hiroshi HASEGAWA, and Ken-ichi SATO

IEICE Transactions on Communications   Vol. E96-B ( 04 ) page： 2012EBP3354   2013.4

Cost Effective Optical Networks that Utilize Hetero-granular Multi-stage Routing

Hai-Chau Le, Hiroshi Hasegawa, Ken-ichi Sato

    page： B-12-23   2013.3

A 270 X 270 Optical Cross-Connect Switch Utilizing Wavelength Routing with Cascaded AWGs Reviewed

Tomonobu Niwa, Hiroshi Hasegawa, Ken-ichi Sato

OFC/NFOEC2013     page： OTh1A.3   2013.3

OXC Hardware Scale Reduction Attained by Using Interconnected Subsystem Architecture Reviewed

Yuto Iwai, Hiroshi Hasegawa, and Ken-ichi Sato

OFC/NFOEC2013     page： NW1J.2   2013.3

Compact Integrated Tunable Filter Utilizing AWG Routing Function and Small Switches Reviewed

Tomonobu Niwa, Hiroshi Hasegawa, Ken-ichi Sato, Toshio Watanabe, and Hiroshi Takahashi

OFC/NFOEC2013     page： OW1C.2   2013.3

Impact of Wavelength/Waveband Convertors and the Cost Bound in Hierarchical Optical Path Networks Reviewed

Zhi-shu Shen, Hiroshi Hasegawa, Ken-ichi Sato

OFC/NFOEC2013     page： OM3A.2   2013.3

Dynamic Grouped Routing Optical Networks for Cost Effective and Agile Wavelength Services Reviewed

Yuki Taniguchi, Hiroshi Hasegawa, Ken-ichi Sato

OFC/NFOEC2013     page： OM3A.5   2013.3

Design strategies for Survivable Grouped Routing Entity (GRE)-based Optical Networks Reviewed

Hiroshi Hasegawa, Yuki Taniguchi, Ken-ichi Sato, Amornrat Jirattigalachote, Paolo Monti, Lena Wosinska

DRCN2013     page： 148-154   2013.3

Performance Evaluation of Large Capacity Ultra-Compact Waveband Cross-Connect Reviewed

T. Ban, K. Ishii, H. Hasegawa, K. Sato, H. Takahashi, M. Okuno

IEEE Photonics Technology Letters   Vol. 25 ( 5 ) page： 446-449   2013.3

Performance Evaluation of Large Capacity Ultra-compact Waveband Cross-connect Reviewed

Toshinori Ban, Kiyo Ishii, Hiroshi Hasegawa, Ken-ichi Sato, Hiroshi Takahashi, and Masayuki Okuno

IEEE Photonic Technology Letters   Vol. 25 ( 5 ) page： 446-449   2013.3

A large-scale photonic node architecture that utilizes interconnected OXC subsystems Reviewed

Yuto Iwai, Hiroshi Hasegawa, and Ken-ichi Sato

OSA Optics Express   Vol. 21 ( 1 ) page： 478-487   2013.1

A novel large-scale OXC architecture and an experimental system that utilizes wavelength path switching and fiber selection Reviewed

Toshinori Ban, Hiroshi Hasegawa, Ken-ichi Sato, Toshio Watanabe, and Hiroshi Takahashi

OSA Optics Express   Vol. 21 ( 1 ) page： 469-477   2013.1

An efficient heuristic waveband assignment algorithm for hierarchical optical path networks utilizing wavelength convertors Reviewed

Z. Shen, H. Hasegawa, and K. Sato

ELSEVIER Optical Switching and Networking   Vol. 10 ( 1 ) page： 54-61   2013.1

PCE-based fast path control in multi-domain photonic networks Reviewed

Y. Iizawa, S. Araki, S. Ishida, I. Nishioka, K. Shimada, H. Hasegawa, K. Sato

ELSEVIER Optical Switching and Networking   Vol. 10 ( 1 ) page： 32-43   2013.1

Impact of Elastic Optical Paths that Adopt Distance Adaptive Modulation to Create Efficient Network Reviewed

Tatsumi TAKAGI, Hiroshi HASEGAWA, Ken-ichi SATO, Yoshiaki SONE, Akira HIRANO, and Masahiko JINNO

IEICE TRANSACTIONS on Communications   Vol. E95-B ( 12 ) page： (未決定)   2012.12

Formulation of MUX/DEMUX Functions for Multiple Input-Output Port Cyclic AWG Reviewed

Kiyo Ishii, Hiroshi Hasegawa, and Ken-ichi Sato

ACP2012     page： AS4A.4   2012.11

Quasi-Scheduled Optical Path Routing and Wavelength Assignment That Uses Expected Traffic Variation Reviewed

Naoaki Osawa, Hiroshi Hasegawa, and Ken-ichi Sato

ACP2012     page： AS2D.4   2012.11

Design of Optical Path Networks Employing Large-capacity WSS/WBSS-Combined Optical Cross-connects Reviewed

Hai Chau Le, Hiroshi Hasegawa, and Ken-ichi Sato

ACP2012     page： AF4A.49   2012.11

Efficient Routing Strategies for Interconnected Small Scale OXC Sub-System Networks Reviewed

Yuto Iwai, Hiroshi Hasegawa, and Ken-ichi Sato

ACP2012     page： ATh2D.2   2012.11

Performance Evaluation of Large-Scale OXC Architecture Employing Wavelength Path Switching and Fiber Selection Reviewed

Toshinori Ban, Hiroshi Hasegawa, and Ken-ichi Sato

ACP2012     page： ATh2D.4   2012.11

A Novel Large-Scale Wavelength Routing Switch Configuration Exploiting Small Arrayed Waveguide Gratings Reviewed

Tomonobu Niwa, Hiroshi Hasegawa, Ken-ichi Sato, Toshio Watanabe, and Hiroshi Takahashi

ACP2012     page： ATh2C.4   2012.11

Evaluations of OXC Hardware Scale and Network Resource Requirements of Different Optical Path Add/Drop Ratio Restriction Schemes Reviewed

Fumisato Naruse, Yoshiyuki Yamada, Hiroshi Hasegawa, and Ken-ichi Sato

IEEE/OSA Journal of Optical Communications and Networking   Vol. 4 ( 11 ) page： B26-B34   2012.11

Optical Fast Circuit Switching Networks Employing Dynamic Waveband Tunnel Reviewed

Takahiro Ogawa, Hiroshi HASEGAWA, and Ken-ichi SATO

IEICE TRANSACTIONS on Communications   Vol. E95-B ( 10 ) page： (未決定)   2012.10

Router Power Reduction Through Dynamic Performance Control Based on Traffic Predictions Reviewed

Hiroyuki Ito, Hiroshi HASEGAWA, and Ken-ichi SATO

IEICE TRANSACTIONS on Communications   Vol. E95-B ( 10 ) page： (未決定)   2012.10

Performance evaluation of optical path networks utilizing waveband selective switch-based cross-connects Reviewed

H. -C. Le, T.-B. Nguyen, H. Hasegawa, and K. Sato

2012 International Conference on Advanced Technologies for Communications (ATC)     page： 323-326   2012.10

Shared Protected Elastic Optical Path Network Design That Applies Iterative Re-Optimization Based on Resource Utilization Efficiency Measures Reviewed

Shun Kosaka, Hiroshi Hasegawa, Ken-ichi Sato, Takafumi Tanaka, Akira Hirano, Masahiko Jinno

38th European Conference and Exhibition on Optical Communication (ECOC2012)     page： Tu.4.D.5   2012.9

Large-Scale Photonic Node Architecture That Utilizes Interconnected Small Scale Optical Cross-Connect Sub-Systems Reviewed

Yuto Iwai, Hiroshi Hasegawa, Ken-ichi Sato

38th European Conference and Exhibition on Optical Communication (ECOC2012)     page： We.3.D.3   2012.9

A Novel Large-Scale OXC Architecture That Employs Wavelength Path Switching and Fiber Selection Reviewed

Toshinori Ban, Hiroshi Hasegawa, Ken-ichi Sato, Toshio Watanabe, Hiroshi Takahashi

38th European Conference and Exhibition on Optical Communication (ECOC2012)     page： We.3.D.1   2012.9

Hardware Scale Reduction in Large-Port Count OXCs Exploiting Selective Switch based Coarse Granular Routing Reviewed

Yuki Taniguchi, Yoshiyuki Yamada, Hiroshi Hasegawa, Ken-ichi Sato

Photonic in Switching 2012 (PS2012)     page： We-S31-O03   2012.9

Impairment-Aware Multicast Tree Design for Hierarchical Optical Path Networks Reviewed

Yusuke Hachisuka, Hiroshi Hasegawa, Ken-ichi Sato

Photonic in Switching 2012 (PS2012)     page： Th-S33-O08   2012.9

Effectiveness of Waveband Conversion for Hierarchical Optical Path Networks and the Allowable Cost Bound Reviewed

Zhi-shu Shen, Hiroshi Hasegawa, Ken-ichi Sato

Photonic in Switching 2012 (PS2012)     page： Th-S34-O10   2012.9

Compact Tunable Filter Realized with Combination of Wavelength Routing and Switch Function Reviewed

Tomonobu Niwa, Hiroshi Hasegawa and Ken-ichi Sato

Photonic in Switching 2012 (PS2012)     page： Th-S23-O06   2012.9

A Large Capacity Optical Cross-connect Architecture Exploiting Multi-Granular Optical Path Routing Reviewed

Hai-Chau Le, Hiroshi Hasegawa, Ken-chi Sato

Photonic in Switching 2012 (PS2012)     page： Fr-S26-O14   2012.9

波長グループ化とファイバ選択に基づく大規模光クロスコネクトアーキテクチャ,

坂俊憲, 長谷川 浩, 佐藤健一,

電子情報通信学会2012年ソサイエティ大会予稿集     page： B-12-9   2012.9

トラフィック変動予測を利用した初期割当及び予測誤差に対応した追加割当による2段階光パス波長経路設定法

大澤尚晃, 長谷川 浩, 佐藤健一,

電子情報通信学会2012年ソサイエティ大会予稿集     page： B-12-8   2012.9

トラフィック変動予測に基づくリンク容量の動的制御によるネットワーク低消費電力化

早川和希, 長谷川 浩, 佐藤健一

電子情報通信学会2012年ソサイエティ大会予稿集     page： B-7-48   2012.9