Speckle Noise Reduction in Fiber Optic Analog Video Transmission Using Semiconductor Laser Diodes. - Ken-ichi Sato; Koichi Asatani (IEEE Trans. Commun., 1981)

Fiber Optic Video Transmission Employing Square Wave Frequency Modulation. - Ken-ichi Sato; Shinichi Aoyagi; Tokuhiro Kitami (IEEE Trans. Commun., 1985)

Fiber Optic Analog-Digital Hybrid Signal Transmission Employing Frequency Modulation. - Ken-ichi Sato; Shinichi Aoyagi; Tokuhiro Kitami (IEEE Trans. Commun., 1985)

Variable rate speech coding and network delay analysis for universal transport network. - Ken-ichi Sato; Hiroshi Nakada; Youichi Sato (INFOCOM, 1988)

Variable rate speech coding for asynchronous transfer mode. - Hiroshi Nakada; Ken-ichi Sato (IEEE Trans. Commun., 1990)

Broad-band ATM network architecture based on virtual paths. - Ken-ichi Sato; Satoru Ohta; Ikuo Tokizawa (IEEE Trans. Commun., 1990)

Virtual Path and Link Capacity Design for ATM Networks. - Youichi Sato; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 1991)

Usage parameter control and bandwidth allocation methods for ATM-based B-ISDN. - Naoaki Yamanaka; Youichi Sato; Ken-ichi Sato (Comput. Commun. Rev., 1992)

Introduction Strategy and Technologies for ATM VP-Based Broadband Networks. - Tomonori Aoyama; Ikuo Tokizawa; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 1992)

Dynamic bandwidth control of the virtual path in an asynchronous transfer mode network. - Satoru Ohta; Ken-ichi Sato (IEEE Trans. Commun., 1992)

Comparison of traffic management schemes for ATM networks. - Youichi Sato; Ken-ichi Sato (LCN, 1993)

ATM VP-based broadband networks for multimedia services. - Tomonori Aoyama; Ikuo Tokizawa; Ken-ichi Sato (IEEE Commun. Mag., 1993)

The Washington University Broadband Terminal. - William D. Richard; Pierre Costa; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 1993)

Self-healing ATM networks based on virtual path concept. - Ryutaro Kawamura; Ken-ichi Sato; Ikuo Tokizawa (IEEE J. Sel. Areas Commun., 1994)

Network performance and integrity enhancement with optical path layer technologies. - Ken-ichi Sato; Satoru Okamoto; Hisaya Hadama (IEEE J. Sel. Areas Commun., 1994)

Integrity of public telecommunications networks. - Tsong-Ho Wu; John C. McDonald 002; T. P. Flanagan; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 1994)

Hybridizing a Genetic Algorithm with Rule-Based Reasoning for Production Planning. - Kazuro Hamada; Toshimitsu Baba; Ken-ichi Sato; Masanao Yufu (IEEE Expert, 1995)

Performance limitation of the leaky bucket algorithm for ATM networks. - Naoaki Yamanaka; Youichi Sato; Ken-ichi Sato (IEEE Trans. Commun., 1995)

Optical path accommodation design considering failure restoration with minimum cross-connect system scale. - Naohide Nagatsu; Satoru Okamoto; Ken-ichi Sato (NOMS, 1996)

Network architecture and management concepts for optical transport networks. - Satoru Okamoto; Kimio Oguchi; Ken-ichi Sato (NOMS, 1996)

Photonic transport network OAM technologies. - Ken-ichi Sato (IEEE Commun. Mag., 1996)

Optical Path Cross-Connect System Scale Evaluation Using Path Accommodation Design for Restricted Wavelength Multiplexing . - Naohide Nagatsu; Satoru Okamoto; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 1996)

Network architecture for optical path transport networks. - Satoru Okamoto; Kimio Oguchi; Ken-ichi Sato (IEEE Trans. Commun., 1997)

Performance and node architecture of WDM multiple fiber ring networks. - Naohide Nagatsu; Atsushi Watanabe; Satoru Okamoto; Ken-ichi Sato (ICC, 1998)

Network protection and OA&M mechanism for WDM optical path transport networks. - Satoru Okamoto; Atsushi Watanabe; Naohide Nagatsu; Ken-ichi Sato (ICC, 1998)

Large-capacity optical path cross-connect system for WDM photonic transport network. - Masafumi Koga; Atsushi Watanabe; Takeshi Kawai; Ken-ichi Sato; Yasuji Ohmori (IEEE J. Sel. Areas Commun., 1998)

Photonic transport technologies to create robust backbone networks. - Ken-ichi Sato; Satoru Okamoto (IEEE Commun. Mag., 1999)

Future photonic transport networks based on WDM technologies. - Hiroshi Yoshimura; Ken-ichi Sato; Noboru Takachio (IEEE Commun. Mag., 1999)

GMPLS-based photonic multilayer router (Hikari router) architecture: an overview of traffic engineering and signaling technology. - Ken-ichi Sato; Naoaki Yamanaka; Yoshihiro Takigawa; Masafumi Koga; Satoru Okamoto; Kohei Shiomoto; Eiji Oki; Wataru Imajuku (IEEE Commun. Mag., 2002)

Special Section on Next Generation Photonic Network Technologies. - Ken-ichi Sato (IEICE Trans. Commun., 2005)

Network Design and Cost Optimization for Label Switched Multilayer Photonic IP Networks. - S. Kaneda; Tomohiko Uyematsu; Naohide Nagatsu; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 2005)

Suppression of Boundary Effect and Introduction of Scale Correlation for Wavelet based Traffic Prediction. - Naoya Matsusue; Hiroshi Hasegawa; Ken-ichi Sato (MMSP, 2007)

A Method of Measuring Gain in Liquids Based on the Friis Transmission Formula in the Near-Field Region. - Nozomu Ishii; Takuhei Akagawa; Ken-ichi Sato; Lira Hamada; Soichi Watanabe (IEICE Trans. Commun., 2007)

Formulation of Waveguide Connection for Waveband MUX/DEMUX Using Concatenated Arrayed-Waveguide Gratings. - Shoji Kakehashi; Hiroshi Hasegawa; Ken-ichi Sato; Osamu Moriwaki (IEICE Trans. Commun., 2007)

Recent Developments in and Challenges of Photonic Networking Technologies. - Ken-ichi Sato (IEICE Trans. Commun., 2007)

Prospects and Challenges of Multi-Layer Optical Networks. - Ken-ichi Sato; Hiroshi Hasegawa (IEICE Trans. Commun., 2007)

Simultaneous Measurement of Antenna Gain and Complex Permittivity of Liquid in Near-Field Region Using Weighted Regression. - Nozomu Ishii; Hiroki Shiga; Naoto Ikarashi; Ken-ichi Sato; Lira Hamada; Soichi Watanabe (IEICE Trans. Commun., 2008)

Optical Cross-Connect Switch Architectures for Hierarchical Optical Path Networks. - Shoji Kakehashi; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2008)

Quasi-Dynamic Network Design Considering Different Service Holding Times. - Koichi Kanie; Hiroshi Hasegawa; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 2008)

An efficient hierarchical optical path network design algorithm based on a traffic demand expression in a cartesian product space. - Isao Yagyu; Hiroshi Hasegawa; Ken-ichi Sato (IEEE J. Sel. Areas Commun., 2008)

Optical Networking Technologies That Will Create Future Bandwidth-Abundant Networks [Invited]. - Ken-ichi Sato; Hiroshi Hasegawa (JOCN, 2009)

Wavelength Assignment for Concatenated ROADM Ring Networks and Switch Scale Reduction in a Concatenating Node. - Kiyo Ishii; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2010)

Hierarchical Optical Path Network Design Algorithm Considering Waveband Add/Drop Ratio Constraint. - Hai-Chau Le; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2010)

Efficient iterative design algorithm for enhancing resource utilization of shared protected optical path networks. - Masakazu Sato; Hiroshi Hasegawa; Ken-ichi Sato (DRCN, 2011)

Compact Matrix-Switch-Based Hierarchical Optical Path Cross-Connect with Colorless Waveband Add/Drop Ratio Restriction. - Ryosuke Hirako; Kiyo Ishii; Hiroshi Hasegawa; Ken-ichi Sato; Osamu Moriwaki (IEICE Trans. Commun., 2011)

Development of Hierarchical Optical Path Cross-Connect Systems Employing Wavelength/Waveband Selective Switches. - Kiyo Ishii; Shinichi Mitsui; Hiroshi Hasegawa; Ken-ichi Sato; Shin Kamei; Masayuki Okuno; Hiroshi Takahashi (JOCN, 2011)

Hybrid-hierarchical optical path network design algorithms utilizing ILP optimization. - Hai-Chau Le; Hiroshi Hasegawa; Ken-ichi Sato (Opt. Switch. Netw., 2011)

A dynamic and quasi-centralized RWA method for optical fast circuit switching networks employing route pre-prioritization. - Hiroaki Ohno; Hiroshi Hasegawa; Ken-ichi Sato (Opt. Switch. Netw., 2011)

Novel wavelength tunable filter offering multi-stage selection for colorless, directionless, and contentionless ROADMs. - Tomonobu Niwa; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe; Hiroshi Takahashi; Masayuki Okuno (IEICE Electron. Express, 2012)

SAR-Probe Calibration System Using Reference Dipole Antenna in Tissue-Equivalent Liquid. - Nozomu Ishii; Yukihiro Miyota; Ken-ichi Sato; Lira Hamada; Soichi Watanabe (IEICE Trans. Commun., 2012)

Router Power Reduction through Dynamic Performance Control Based on Traffic Predictions. - Hiroyuki Ito; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2012)

Virtual Fiber Networking and Impact of Optical Path Grooming on Creating Efficient Layer One Services. - Fumisato Naruse; Yoshiyuki Yamada; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2012)

Optical Fast Circuit Switching Networks Employing Dynamic Waveband Tunnel. - Takahiro Ogawa 004; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2012)

Impact of Elastic Optical Paths That Adopt Distance Adaptive Modulation to Create Efficient Networks. - Tatsumi Takagi; Hiroshi Hasegawa; Ken-ichi Sato; Yoshiaki Sone; Akira Hirano; Masahiko Jinno (IEICE Trans. Commun., 2012)

Optical Node Architectures That Utilize Dedicated Add/Drop Switches to Realize Colorless, Directionless and Contentionless Capability. - Yoshiyuki Yamada; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2012)

Effects of Optical Layer Protection Granularity in Survivable Hierarchical Optical Path Network. - Yoshiyuki Yamada; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2012)

Evaluations of OXC Hardware Scale and Network Resource Requirements of Different Optical Path Add/Drop Ratio Restriction Schemes [Invited]. - Fumisato Naruse; Yoshiyuki Yamada; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2012)

Design strategies for survivable Grouped Routing Entity (GRE)-based optical networks. - Hiroshi Hasegawa; Yuki Taniguchi; Ken-ichi Sato; Amornrat Jirattigalachote; Paolo Monti 001; Lena Wosinska (DRCN, 2013)

OXC hardware scale reduction attained by using interconnected subsystem architecture. - Yuto Iwai; Hiroshi Hasegawa; Ken-ichi Sato (OFC/NFOEC, 2013)

A 270 × 270 optical cross-connect switch utilizing wavelength routing with cascaded AWGs. - Tomonobu Niwa; Hiroshi Hasegawa; Ken-ichi Sato (OFC/NFOEC, 2013)

Compact integrated tunable filter utilizing AWG routing function and small switches. - Tomonobu Niwa; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe; Hiroshi Takahashi; S. Soma (OFC/NFOEC, 2013)

Impact of wavelength/waveband convertors and the cost bound in hierarchical optical path networks. - Zhishu Shen; Hiroshi Hasegawa; Ken-ichi Sato (OFC/NFOEC, 2013)

Dynamic grouped routing optical networks for cost effective and agile wavelength services. - Yuki Taniguchi; Hiroshi Hasegawa; Ken-ichi Sato (OFC/NFOEC, 2013)

Mollification Based onWavelets. - Tohru Morita; Ken-ichi Sato (Axioms, 2013)

A large-scale wavelength routing optical switch for data center networks. - Ken-ichi Sato; Hiroshi Hasegawa; Tomonobu Niwa; Toshio Watanabe (IEEE Commun. Mag., 2013)

Efficient Shared Protection Network Design Algorithm that Iterates Path Relocation with New Resource Utilization Metrics. - Masakazu Sato; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2013)

Effectiveness of Wavelength/Waveband Conversion and Its Allowable Cost Bound for Hierarchical Optical Path Networks. - Zhishu Shen; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2013)

Coarse Granular Optical Routing Networks Utilizing Fine Granular Add/Drop. - Yuki Taniguchi; Yoshiyuki Yamada; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2013)

Guest Editorial Next-Generation Spectrum-Efficient and Elastic Optical Transport Networks. - Gangxiang Shen; Ken-ichi Sato; William Shieh; Ioannis Tomkos; Jennifer Yates; Eric W. M. Wong (IEEE J. Sel. Areas Commun., 2013)

PCE-based fast path control in multi-domain photonic networks. - Yohei Iizawa; Soichiro Araki; Shinya Ishida; Itaru Nishioka; Kohei Shimada; Hiroshi Hasegawa; Ken-ichi Sato (Opt. Switch. Netw., 2013)

An efficient heuristic waveband assignment algorithm for hierarchical optical path networks utilizing wavelength convertors. - Zhishu Shen; Hiroshi Hasegawa; Ken-ichi Sato (Opt. Switch. Netw., 2013)

First demonstration of ultra-low-energy hierarchical multi-granular optical path network dynamically controlled through NSI-CS for video related applications. - Junya Kurumida; Kiyo Ishii; Atsuko Takefusa; Yusuke Tanimura; Shigeyuki Yanagimachi; Hitoshi Takeshita; Akio Tajima; Kiyoshi Fukuchi; H. Honma; W. Odashima; Hiroshi Onaka; Ken Tanizawa; et al. (ECOC, 2014)

Low-loss and Low-power-consumption wavelength tunable filter enabling colorless/directionless/contentionless optical drop in ROADMs. - Shoichi Takashina; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe (ECOC, 2014)

Verification of high frequency spectrum utilization in grouped optical path routing networks under traffic growth scenario. - Yuki Terada; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ECOC, 2014)

Novel large-port-count optical-switch architecture for optical interconnection in datacenter. - Koh Ueda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe (ECOC, 2014)

How to create large scale OXCs/ROADMs for future networks. - Ken-ichi Sato (ICTON, 2014)

Hardware scale and performance evaluation of compact OXC add/drop architecture. - Hiroto Ishida; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2014)

Fiber-nonlinearity limitation of transmission distances in ultra-dense gridless photonic networks. - Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2014)

A 204.8 Tbps throughput 64×64 optical cross-connect prototype that allows C/D/C add/drop. - Kensuke Takaha; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe (OFC, 2014)

Low crosstalk wavelength tunable filter that utilizes symmetric and asymmetric Mach-Zehnder interferometers. - Shoichi Takashina; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe (OFC, 2014)

Performance evaluations of large-scale oxc that achieves modular and hitless expansion. - Yasuhiro Tanaka; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2014)

Enhancement of fiber frequency utilization by employing grouped optical path routing. - Yuki Terada; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2014)

Design of Grouped Routing Entity (GRE)-based optical networks with 100% signal quality guarantee. - Amornrat Jirattigalachote; Paolo Monti 001; Lena Wosinska; Yuki Taniguchi; Toshinori Ban; Hiroshi Hasegawa; Ken-ichi Sato (ONDM, 2014)

Implication of inter-node and intra-node contention in creating large throughput photonic networks. - Ken-ichi Sato (ONDM, 2014)

A novel flexible grid/semi-flexible grid optical path network design algorithm that reserves exclusive frequency slots for high bitrate signals. - Zhishu Shen; Hiroshi Hasegawa; Ken-ichi Sato (ONDM, 2014)

Large capacity optical networks applying multi-stage hetero-granular optical path routing. - Hai-Chau Le; Hiroshi Hasegawa; Ken-ichi Sato (Opt. Switch. Netw., 2014)

Novel network control scheme that can substantially reduce link and node costs simultaneously. - Yuki Terada; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ECOC, 2015)

Flexible waveband routing optical networks. - Hiroshi Hasegawa; Suresh Subramaniam 001; Ken-ichi Sato (ICC, 2015)

Router power reduction by active performance control realized with support vector machines. - Hiroshi Kawase; Hiroshi Hasegawa; Ken-ichi Sato (ICNC, 2015)

Wavelength path signalling for WSS/WBSS combined optical switches in hierarchical optical networks. - Takaya Miyazawa; Takahiro Hirayama; Hiroaki Harai; Koh Ueda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ICTON, 2015)

Key technologies to expand optical networking capabilities. - Ken-ichi Sato (ICTON, 2015)

Shared protected grouped optical path routing network design employing iterative path group relocation. - Tomohiro Ishikawa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (RNDM@WMNC, 2015)

Large scale optical cross-connect: Architecture, performance analysis, and feasibility demonstration. - Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2015)

Highly scalable subsystem modular OXC nodes that host tailored add/drop mechanism. - Hiroto Ishida; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2015)

A novel routing and frequency slot assignment scheme that can adapt to transmission speed migration. - Zhishu Shen; Taiki Kusano; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2015)

Demonstration of large-port-count and compact ROADM that exhibits virtual-C/D/C performance. - Shoichi Takashina; Hiroto Ishida; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe (OFC, 2015)

Residual capacity aware dynamic control of GRE-based routing optical path networks under traffic growth model. - Yuki Terada; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2015)

Large-scale optical-switch prototype compactly implemented with novel functional configuration. - Koh Ueda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Toshio Watanabe (OFC, 2015)

Resilient grouped routing optical networks with finely granular protection. - Hiroshi Hasegawa; Yojiro Mori; Ken-ichi Sato (ONDM, 2015)

Boas' Formula and Sampling Theorem. - Tohru Morita; Ken-ichi Sato (Axioms, 2015)

Differential Reliability Path Accommodation Design and Reconfiguration in Virtualized Multi-Layer Transport Network. - Akihiro Kadohata; Takafumi Tanaka; Atsushi Watanabe; Akira Hirano; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2015)

Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks. - Akihiro Kadohata; Atsushi Watanabe; Akira Hirano; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2015)

Hardware Scale and Performance Evaluation of a Compact Subsystem Modular Optical Cross Connect That Adopts Tailored Add/Drop Architecture. - Hiroto Ishida; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2015)

Integrity Enhancement of Flexible/Semi-Flexible Grid Networks That Minimizes Disruption in Spectrum Defragmentation and Bitrate-Dependent Blocking. - Zhishu Shen; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2015)

Criteria for Selecting Subsystem Configuration in Creating Large-Scale OXCs. - Yasuhiro Tanaka; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2015)

Spectrum utilization maximization in coarse granular optical routing networks that employ fine granular shared protection. - Tomohiro Ishikawa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (DRCN, 2016)

Impact of node/fiber/WSS degrees in creating cost effective OXCs. - Ken-ichi Sato (ICTON, 2016)

Tipping point for the future scalable OXC - What size MxM WSS is needed? - Masaki Niwa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2016)

Highly spectral efficient elastic optical network employing grouped optical path routing. - Yuki Terada; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2016)

A compact OXC node architecture that exploits dynamic path bundling and routing. - Tomohiro Ishikawa; Hiroshi Hasegawa; Suresh Subramaniam 001; Ken-ichi Sato (ONDM, 2016)

Survivable Grouped Routing Optical Networks with Dedicated Path Protection. - Hiroshi Hasegawa; Yojiro Mori; Ken-ichi Sato (IEICE Trans. Commun., 2016)

Node Architecture and Design of Flexible Waveband Routing Optical Networks. - Hiroshi Hasegawa; Suresh Subramaniam 001; Ken-ichi Sato (JOCN, 2016)

Disruption-Free Expansion of Protected Optical Path Networks that Utilize Subsystem Modular OXC Nodes. - Kosuke Sato; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2016)

Dynamic Router Performance Control Utilizing Support Vector Machines for Energy Consumption Reduction. - Hiroshi Kawase; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (IEEE Trans. Netw. Serv. Manag., 2016)

First Demonstration of Subsystem-Modular Optical Crossconnect Using Single-Module 6×6 WSS. - Ryota Hashimoto; Shuhei Yamaoka; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Keita Yamaguchi; Kazunori Seno; Kenya Suzuki (ECOC, 2017)

Joint Pre-, Inline-, and Post-Compensation of Spectrum Narrowing Caused by Traversing Multiple Optical Nodes. - Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ECOC, 2017)

Realization and Application of Large-scale Fast Optical Circuit Switch for Data Center Networking. - Ken-ichi Sato (ECOC, 2017)

Role of grouped routing in creating cost effective and bandwidth abundant networks. - Ken-ichi Sato (ICTON, 2017)

Dynamic control of coarse/fine hybrid granular routing optical networks. - Yusaku Ito; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2017)

Optical tunable filter for gridless ROADM. - Masaki Niwa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2017)

Novel intra- and inter-datacenter converged network exploiting space- and wavelength-dimensional switches. - Koh Ueda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2017)

Highly reliable large-scale optical cross-connect architecture utilizing M×M wavelength-selective switches. - Shuhei Yamakami; Masaki Niwa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2017)

Dynamic Path Provisioning and Disruption-Free Reoptimization Algorithms for Bandwidth on-Demand Services Considering Fairness. - Masahiro Nakagawa; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2017)

Optical Networking Paradigm: Past, Recent Trends and Future Directions. - Eiji Oki; Naoya Wada; Satoru Okamoto; Naoaki Yamanaka; Ken-ichi Sato (IEICE Trans. Commun., 2017)

Fast Optical Circuit Switch for Intra-Datacenter Networking. - Koh Ueda; Yojiro Mori; Hiroshi Hasegawa; Hiroyuki Matsuura; Kiyo Ishii; Haruhiko Kuwatsuka; Shu Namiki; Toshio Watanabe; Ken-ichi Sato (IEICE Trans. Commun., 2017)

Spectral Efficiency Maximization of Grouped Routing Optical Networks With Shared Protection. - Tomohiro Ishikawa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2017)

Tipping Point for the Future Scalable OXC: What Size M × M WSS Is Needed? - Masaki Niwa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2017)

Algorithm for Raising OXC Port Count to Meet Traffic Growth at Minimum Cost. - Kosuke Sato; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2017)

Fast Optical Circuit Switch Using Monolithically Integrated Silicon-Photonic Space Switch and Wavelength-Tuneable Filter. - Yojiro Mori; Mungun-Erdene Ganbold; Ryuta Shiraki; Keijiro Suzuki; Hiroyuki Matsuura; Hitoshi Kawashima; Shu Namiki; Kazuhiro Ikeda; Ken-ichi Sato (ECOC, 2018)

Novel Demodulation Framework Based on Quadrature Duo-Binary/Quaternary/Octernary Spectrum Shaping and MLSE for Mitigating Spectrum Narrowing Caused by Node Traversals. - Shuhei Yamaoka; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ECOC, 2018)

Spectral utilization efficient coarse granular routing optical networks with resiliency against multiple failures. - Tomohiro Ishikawa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ICIN, 2018)

For the Construction of Learning Opportunity for Program Manager -Trial Development of Open Club of Program Manager. - Masaaki Ichiki; Ken-ichi Sato; Yuichi Nakagami (IIAI-AAI, 2018)

Fragmentation-Minimized Transponder Upgrading Employing Channel Bandwidth Aligned Slot Allocation in Flexible Grid Optical Networks. - Hiroshi Hasegawa; Takuma Yasuda; Yojiro Mori; Ken-ichi Sato (OFC, 2018)

Spectrally Efficient and Highly Resilient Grouped Routing Network Enhanced with Optical Performance Monitoring. - Keisuke Kayano; Hiroshi Saito; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Shoichiro Oda; Setsuo Yoshida; Takeshi Hoshida (OFC, 2018)

Large-Scale Optical Circuit Switch Architecture for Intra-Datacenter Networking. - Yojiro Mori; Ken-ichi Sato (OFC, 2018)

Next-Generation ROADM Employing Bandwidth-Adaptive Silicon-Photonic Filters for Flexible Drop Operation. - Yojiro Mori; Koh Ueda; Keijiro Suzuki; Hiroyuki Matsuura; Ken Tanizawa; Kazuhiro Ikeda; Shu Namiki; Hitoshi Kawashiwa; Ken-ichi Sato (OFC, 2018)

A New Framework for Nation-Wide Networking in Future Datacenter-Traffic Centric Era. - Keisuke Kayano; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Fumikazu Inuzuka; Akira Hirano (PSC, 2018)

Architecture and Design of Quasi-Nyquist WDM Networks with Flexible Grid Granular Switching. - Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (PSC, 2018)

Design and Verification of Large-Scale Optical Circuit Switch Using ULCF AWGs for Datacenter Application. - H. Nagai; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2018)

Enhancing Protection Performance by Effectively Using Spectral Slots of Impairment-Aware Elastic Optical Networks [Invited]. - Hitoshi Takeshita; Takefumi Oguma; Shinsuke Fujisawa; Yuta Suzuki; Baku Yatabe; Akio Tajima; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2018)

Design of and Resiliency Enhancement in Coarse/Fine Hybrid Granular Routing Optical Networks Based on Iterative Path-Pair-Loop Inflation. - Keisuke Itakura; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (DRCN, 2019)

How Optical-Circuit/Electrical-Packet Hybrid Switching will Create High Performance and Cost-Effective Data Center Networks. - Ken-ichi Sato (ICTON, 2019)

Dynamic Control of Transparent Optical Networks with Adaptive State-Value Assessment Enabled by Reinforcement Learning. - Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ICTON, 2019)

Verification of High Performance and Wide Applicability of Seamlessly Expandable and Limitless OXC. - Ryota Hashimoto; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2019)

Demonstration of Quasi-Nyquist WDM Networks using Widely Deployed Wavelength-Selective Switches. - Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2019)

Switching granularity and intra-node interconnection optimization for large scale optical nodes. - Hiroshi Hasegawa; Ken-ichi Sato (OECC/PSC, 2019)

Feasibility Test of Large-Scale (1, 424×1, 424) Optical Circuit Switches Utilizing Commercially Available Tunable Lasers. - Eiji Honda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OECC/PSC, 2019)

Evaluation of WSS Characteristics in Highly Dense WDM Networks. - Kazuya Okamura; Shuhei Yamaoka; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OECC/PSC, 2019)

Improved Optical Amplification Efficiency by Using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks. - Hitoshi Takeshita; Keiichi Matsumoto; Hiroshi Hasegawa; Ken-ichi Sato; Emmanuel Le Taillandier de Gabory (IEICE Trans. Commun., 2019)

Assessment of Node- and Link- Level Blocking and Creating Cost-Effective Networks in the Era of Large Bandwidth Services. - Shuhei Yamakami; Masaki Niwa; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Fumikazu Inuzuka; Akira Hirano (IEICE Trans. Commun., 2019)

Demonstration of 4.3 Pbps Optical Circuit Switching for Intra-Datacentre Networks Based on Spatial Super-Channels. - Eiji Honda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (ECOC, 2020)

Large-Scale and Fast Optical Circuit Switch for Coherent Detection Using Tunable Local Oscillators Formed with Wavelength Bank and Widely-Tunable Silicon Ring Filters. - Ryosuke Matsumoto; Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Takashi Inoue; Yojiro Mori; Kazuhiro Ikeda; Shu Namiki; Ken-ichi Sato (ECOC, 2020)

Large-Scale Optical Switch Architectures for Intra-Datacentre Networks. - Yojiro Mori; Ken-ichi Sato (ECOC, 2020)

Design and Performance of Large Port Count Optical Switches for Intra Data Centre Application. - Ken-ichi Sato (ICTON, 2020)

High-Throughput Optical Circuit Switch for Intra-Datacenter Networks Based on Spatial Super-Channels. - Eiji Honda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2020)

Scalable and Fast Optical Circuit Switch Created with Silicon-Photonic Tunable-Filter-Based Local Oscillator Bank and Colorless Coherent Detection. - Ryosuke Matsumoto; Takashi Inoue; Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Yojiro Mori; Kazuhiro Ikeda; Shu Namiki; Ken-ichi Sato (OFC, 2020)

Dynamically Controlled Flexible-Grid Networks Based on Semi-Flexible Spectrum Assignment and Network-State-Value Evaluation. - Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2020)

Architecture and Design of Coarse/Fine Hybrid Granular Routing Optical Networks. - Yusaku Ito; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2020)

Assessment of Optical Node Architectures for Building Next Generation Large Bandwidth Networks. - Mungun-Erdene Ganbold; Takuma Yasuda; Yojiro Mori; Hiroshi Hasegawa; Fumikazu Inuzuka; Akira Hirano; Ken-ichi Sato (IEICE Trans. Commun., 2020)

Transmission-Quality-Aware Online Network Design and Provisioning Enabled by Optical Performance Monitoring. - Keisuke Kayano; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Shoichiro Oda; Setsuo Yoshida; Takeshi Hoshida (IEICE Trans. Commun., 2020)

Design of seamlessly and limitlessly expandable OXC and verification tests on its versatile applicability. - Ryota Hashimoto; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2020)

How Optical Technologies Can Innovate Intra Data Center Networks. - Ken-ichi Sato (ICCCN, 2021)

Fast Optical Switch Utilizing Coherent Detection Enabled by Cooperative Filtering of Transmission Signal and Local Oscillator (LO) Wavelength Sourced from an LO Bank. - Ryosuke Matsumoto; Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Takashi Inoue; Kazuhiro Ikeda; Shu Namiki; Ken-ichi Sato (OFC, 2021)

Fragmentation-Minimized Periodic Network-Bandwidth Expansion Employing Aligned Channel Slot Allocation in Flexible Grid Optical Networks. - Hiroshi Hasegawa; Takuma Yasuda; Yojiro Mori; Ken-ichi Sato (IEICE Trans. Commun., 2021)

High-port-count optical circuit switches for intra-datacenter networks [Invited Tutorial]. - Yojiro Mori; Ken-ichi Sato (JOCN, 2021)

Design and control of highly spectrally efficient photonic networks enabled by fiber-granular routing on overlaid ring-shaped topologies. - Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Paolo Monti 001 (JOCN, 2021)

Demonstration of High-Throughput Intra-Datacenter Switches Using Interleaved AWGs for Nyquist WDM. - Takuma Kuno; Takumi Mitsuya; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato (OFC, 2022)

Scalable and Fast Optical Circuit Switch Exploiting Colorless Coherent Detection. - Ryosuke Matsumoto; Ryotaro Konoike; Keijiro Suzuki; Takashi Inoue; Shu Namiki; Ken-ichi Sato (OFC, 2022)

Power-saving Aware SDM Photonic Node with the Throughput Scalable to over Peta bit. - Fumikazu Inuzuka; Hiroshi Hasegawa; Kohki Shibahara; Hidenori Takahashi; Takehiro Tsuritani; Kazunori Seno; Naru Nemoto; Emmanuel Le Taillandier de Gabory; Shigeyuki Yanagimachi; Taiji Sakamoto; Kazuhide Nakajima; Masanori Takahashi; et al. (OECC/PSC, 2022)

Prospects and challenges of optical switching technologies for intra data center networks. - Ken-ichi Sato; Hiroyuki Matsuura; Ryotaro Konoike; Keijiro Suzuki; Kazuhiro Ikeda; Shu Namiki (JOCN, 2022)

Fast (<9.4 μs) Full-C-Band Tuning of Silicon Photonics Double-Ring Filters using Feed-Forward Control. - Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Ryosuke Matsumoto; Kazuhiro Ikeda; Ken-ichi Sato (OFC, 2023)

Performance Verification of 7, 424 × 7, 424 Optical Switch Offering 1.4 μs Switching Time. - Ryosuke Matsumoto; Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Takashi Inoue; Kazuhiro Ikeda; Shu Namiki; Ken-ichi Sato (OFC, 2023)

Optical Switching will Innovate Intra Data Center Networks. - Ken-ichi Sato (OFC, 2023)

Cost-effective ROADM Using Wide-bandwidth Silicon Tunable Ring Filter for Drop Operation. - Ryosuke Matsumoto; Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Takashi Inoue; Kazuhiro Ikeda; Shu Namiki; Ken-ichi Sato (OFC, 2024)

A Fast Control Plane for a Large-Scale and High-Speed Optical Circuit Switch System. - Ryousei Takano; Kiyo Ishii; Toshiyuki Shimizu; Fumihiro Okazaki; Shu Namiki; Ken-ichi Sato (CoRR, 2024)

Optical switching will innovate intra data center networks [Invited Tutorial]. - Ken-ichi Sato (J. Opt. Commun. Netw., 2024)