2.05 Peta-bit/s super-nyquist-WDM SDM transmission using 9.8-km 6-mode 19-core fiber in full C band. - Daiki Soma; Koji Igarashi; Yuta Wakayama; Koki Takeshima; Yu Kawaguchi; Noboru Yoshikane; Takehiro Tsuritani; Itsuro Morita; Masatoshi Suzuki (ECOC, 2015)

DMD measurement of 114-SDM transmission fibre using low-coherence interferometry with digital holographic processing. - Yuta Wakayama; Hidenori Taga; Koji Igarashi; Takehiro Tsuritani (ECOC, 2015)

114 space-division-multiplexed transmission over 9.8-km weakly-coupled-6-mode uncoupled-19-core fibers. - Koji Igarashi; Daiki Soma; Yuta Wakayama; Koki Takeshima; Yu Kawaguchi; Takehiro Tsuritani; Itsuro Morita; Masatoshi Suzuki (OFC, 2015)

Ultra-dense space division multiplexing technologies towards multi-Peta bit/s optical transmission. - Masatoshi Suzuki; Daiki Soma; Koji Igarashi; Yuta Wakayama; Koki Takeshima; Yu Kawaguchi; Noboru Yoshikane; Takehiro Tsuritani; Itsuro Morita (ICTON, 2016)

6-Mode 19-core fiber for weakly-coupled mode-multiplexed transmission over uncoupled cores. - Tetsuya Hayashi; Takuji Nagashima; Kazuhiro Yonezawa; Yuta Wakayama; Daiki Soma; Koji Igarashi; Takehiro Tsuritani; Takashi Sasaki (OFC, 2016)

All-fiber-based selective mode multiplexer and demultiplexer for six-mode multiplexed signals. - Koji Igarashi; Kyung Jun Park; Daiki Soma; Yuta Wakayama; Takehiro Tsuritani; Byoung Yoon Kim (OFC, 2016)

Intermediate mode interchange for reduction of differential mode-group delay in weakly-coupled 6-mode fiber transmission line. - Yuta Wakayama; Daiki Soma; Koji Igarashi; Hidenori Taga; Takehiro Tsuritani (OFC, 2016)

257-Tbit/s Partial MIMO-based 10-Mode C+L-band WDM Transmission over 48-km FMF. - Daiki Soma; Shohei Beppu; Yuta Wakayama; Yu Kawaguchi; Koji Igarashi; Takehiro Tsuritani (ECOC, 2017)

10.16 Peta-bit/s Dense SDM/WDM transmission over Low-DMD 6-Mode 19-Core Fibre Across C+L Band. - Daiki Soma; Yuta Wakayama; Shohei Beppu; Seiya Sumita; Takehiro Tsuritani; Tetsuya Hayashi; Takuji Nagashima; Masato Suzuki; Hidenori Takahashi; Koji Igarashi; Itsuro Morita; Masatoshi Suzuki (ECOC, 2017)

Dual C+L-Band Six-Mode Optical Amplifier with Widely Erbium-Doped Fibre. - Yuta Wakayama; Daiki Soma; Koji Igarashi; Hidenori Taga; Takehiro Tsuritani (ECOC, 2017)

Ultra-High Spectral Efficiency Few-Mode Multicore Fibre Transmission. - Yuta Wakayama; Daiki Soma; Takehiro Tsuritani; Itsuro Morita (ECOC, 2017)

Partial MIMO-based 10-mode-multiplexed transmission over 81km weakly-coupled few-mode fiber. - Daiki Soma; Yuta Wakayama; Koji Igarashi; Takehiro Tsuritani (OFC, 2017)

MFD Measurement of a Six-Mode Fiber with Low-Coherence Digital Holography. - Yuta Wakayama; Hidenori Taga; Takehiro Tsuritani (IEICE Trans. Commun., 2017)

Low-loss and Low-crosstalk All-fiber-based Six-mode Multiplexer and Demultiplexer for Mode-Multiplexed QAM Signals in C-band. - Koji Igarashi; Yuta Wakayama; Daiki Soma; Takehiro Tsuritani; Itsuro Morita; Kyung Jun Park; Jaekwon Ko; Byoung Yoon Kim (OFC, 2018)

SDN-enabled Sliceable Multi-dimensional (Spectral and Spatial) Transceiver Controlled with YANG/NETCONF. - Raul Muñoz 001; Noboru Yoshikane; Ramon Casellas; Josep M. Fabrega; Ricard Vilalta; Michela Svaluto Moreolo; Laia Nadal; Ricardo Martínez 001; Daiki Soma; Yuta Wakayama; Shohei Beppu; Seiya Sumita; et al. (OFC, 2018)

266.1-Tbit/s Repeatered Transmission over 90.4-km 6-Mode Fiber Using Dual C+L-Band 6-Mode EDFA. - Yuta Wakayama; Daiki Soma; Shohei Beppu; Seiya Sumita; Koji Igarashi; Takehiro Tsuritani (OFC, 2018)

Mode-Dependent Probabilistic Shaping for Highly-Efficient Weakly Coupled 10-Mode Fiber Transmission. - Shohei Beppu; Daiki Soma; Yuta Wakayama; Seiya Sumita; Koji Igarashi; Hidenori Takahashi; Takehiro Tsuritani (OFC, 2019)

Field Test of Installed High-Density Optical Fiber Cable with Multi-Core Fibers toward Practical Deployment. - Takehiro Tsuritani; Daiki Soma; Yuta Wakayama; Yuichi Miyagawa; Mikoto Takahashi; Itsuro Morita; Koichi Maeda; Kohei Kawasaki; Toshikazu Matsuura; Masayoshi Tsukamoto; Ryuichi Sugizaki (OFC, 2019)

Highly Accurate Mode Conversion Using Iterative Spatial Cross Modulation. - Tomohiro Maeda; Atsushi Okamoto; Kazuhisa Ogawa; Akihisa Tomita; Yuta Wakayama; Takehiro Tsuritani (OECC/PSC, 2019)

SDN Control of Sliceable Multidimensional (Spectral and Spatial) Transceivers with YANG/NETCONF. - Raúl Muñoz 001; Noboru Yoshikane; Ricard Vilalta; Josep M. Fàbrega; Laura Rodriguez; Ramon Casellas; Michela Svaluto Moreolo; Ricardo Martínez 001; Laia Nadal; Daiki Soma; Yuta Wakayama; Shohei Beppu; et al. (JOCN, 2019)

400GBASE-LR4 Transmission Over Field-Deployed Fibre Link Supported by Bismuth-Doped Fibre Amplifier. - Yuta Wakayama; Vitaly Mikhailov; Daniel J. Elson; Rachata Maneekut; Jiawei Luo; Cen Wang; Filippos Balasis; Noboru Yoshikane; Daryl Inniss; Takehiro Tsuritani (ECOC, 2021)

Demonstration of Hybrid Probabilistic Geometric Shaping 64QAM Optical Fiber Transmission Using Optimized Constellation for MAP Detection with Hard Decision Decoding. - Rachata Maneekut; Daniel J. Elson; Yuta Wakayama; Shohei Beppu; Hidenori Takahashi; Noboru Yoshikane; Takehiro Tsuritani (ICACT, 2021)

50.47-Tbit/s Standard Cladding Ultra-Low-Loss Coupled 4-Core Fiber Transmission over 9, 150 km. - Daiki Soma; Shohei Beppu; Yuta Wakayama; Seiya Sumita; Hidenori Takahashi; Noboru Yoshikane; Itsuro Morita; Takehiro Tsuritani; Masatoshi Suzuki (OFC, 2021)

FIFO-less Core-pump Combiner for Multicore Fiber Amplifier. - Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani (OFC, 2021)

Investigating the Impact of Hybrid Raman-EDFAs in the Cost and Energy Efficiency of C+L Wideband Optical Networks. - Filippos Balasis; Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani (ONDM, 2021)

Transmission of 400GBASE-LR8 Over 15 km Deployed Step-Index 4-Core fiber for Data Centre Interconnects. - Daniel J. Elson; Yuta Wakayama; Shohei Beppu; Daiki Soma; Noboru Yoshikane (OFC, 2022)

First Demonstration of Hierarchical SDM/WDM 10-Mode-Fiber Ring Network with Spatial Bypass and Reconfigurable Spatial Add/Drop Multiplexing. - Takahiro Kodama; Shohei Beppu; Daiki Soma; Yuta Wakayama; Noboru Yoshikane; Masahiko Jinno; Takehiro Tsuritani (OECC/PSC, 2022)

High-Capacity and Ultra-Long-Haul Transmission over Transoceanic Distances Using Coupled and Uncoupled 4-Core Fibers with Standard Cladding Diameter. - Masatoshi Suzuki; Daiki Soma; Shohei Beppu; Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani (ICTON, 2023)

9.6-THz Single Fibre Amplifier O-band Coherent DWDM Transmission. - Daniel J. Elson; Yuta Wakayama; Vitaly Mikhailov; Jiawei Luo; Noboru Yoshikane; Daryl Inniss; Takehiro Tsuritani (OFC, 2023)

Performance Requirements for FIFO-less Multicore Fibre Repeaters in Transatlantic-class Transmission. - Daniel J. Elson; Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani (OFC, 2023)

Span Order Dependency for Nonlinear Interference Noise over In-homogeneous Multispan O-band Coherent Transmission. - Daniel J. Elson; Mindaugas Jarmolovicius; Noboru Yoshikane; Takehiro Tsuritani; Eric Sillekens; Polina Bayvel; Robert I. Killey; Yuta Wakayama (OFC, 2024)

Continuous 16.4-THz Bandwidth Coherent DWDM Transmission in O-band using a Single Fibre Amplifier System. - Daniel J. Elson; Vitaly Mikhailov; Jiawei Luo; Shohei Beppu; Glenn W. Baxter; Ralf Stolte; Luke Stewart; Shigehiro Takasaka; Mindaugas Jarmolovicius; Eric Sillekens; Robert I. Killey; Polina Bayvel; et al. (OFC, 2024)

U-band WDM Transmission over 90-km Deployed Fiberoptic Cable Leveraged by S+C+L-band WDM Channels. - Tomoyuki Kato; Shohei Beppu; Daiki Soma; Hidenobu Muranaka; Shun Okada; Hiroyuki Irie; Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani; Yu Tanaka; Takeshi Hoshida (OFC, 2024)

18,090-km 2-core Fiber Transmission Using Circulatory Directional Fan-in/Fan-out Devices. - Daiki Soma; Shohei Beppu; Lídia Galdino; Michael Lorenz; Qiulin Ma; Katsuhiro Iwasaki; Seiya Sumita; Kosuke Komatsu; Daniel J. Elson; Tomoaki Kiriyama; Katsuya Kito; Keito Kitamura; et al. (OFC, 2024)

U-Band Transmission Characteristics over Standard Cladding Step-Index 4-Core Fiber Span. - Daiki Soma; Tomoyuki Kato; Shohei Beppu; Daniel J. Elson; Hidenobu Muranaka; Hiroyuki Irie; Shun Okada; Yu Tanaka; Yuta Wakayama; Noboru Yoshikane; Takeshi Hoshida; Takehiro Tsuritani (OFC, 2024)

A Tale for Many: Integrated Control Mechanism of Optical Circuit Switching for Data Center and Distributed Deep Learning System. - Cen Wang; Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani (OFC, 2024)

122.6 Tb/s S+C+L Band Unrepeated Transmission over 223 km link with Optimised Bidirectional Raman Amplification. - Jiaqian Yang; Romulo Aparecido; Henrique Buglia; Pratim Hazarika; Eric Sillekens; Ronit Sohanpal; Mingming Tan; Dini Pratiwi; Ruben S. Luis; Benjamin J. Puttnam; Yuta Wakayama; Wladek Forysiak; et al. (OFC, 2024)

New GAWBS Noise Interacting with Longitudinally Propagating Acoustic Waves in Few-mode Fibers. - Masato Yoshida; Takaaki Hirai; Shohei Beppu; Keisuke Kasai; Toshihiko Hirooka; Masataka Nakazawa; Yuta Wakayama; Noboru Yoshikane (OFC, 2024)

Reach Extension of a 53.12 Gbps PAM-4 IM/DD Signals With Optimized Extinction Ratio in Amplified Multi-Span O-Band Transmission. - Rachata Maneekut; Daniel J. Elson; Yuta Wakayama; Noboru Yoshikane; Pasu Kaewplung (IEEE Access, 2024)

All-Optical Time-Extended OCDM-PAM4 for 200 Gbps/λ O-Band Multi-Span Transmission. - Rachata Maneekut; Daniel J. Elson; Yuta Wakayama; Noboru Yoshikane; Pasu Kaewplung (IEEE Access, 2024)

Modoru: Clos nanosecond optical switching for distributed deep training [Invited]. - Cen Wang; Noboru Yoshikane; Daniel J. Elson; Yuta Wakayama; Daiki Soma; Shohei Beppu; Takehiro Tsuritani (J. Opt. Commun. Netw., 2024)

Coexistence Transmission of 33.4-Tb/s O-band Coherent Classical Channels and a C-band QKD Channel over 80 km. - Shohei Beppu; Daniel J. Elson; Shinya Murai; Akira Murakami; Hiroki Yamamuro; Yuta Wakayama; Noboru Yoshikane; Takehiro Tsuritani (OFC, 2025)

Core-level Routing in Long-haul MCF Transmission System with FIFO-less Multicore EDFA and Spatial Cross-connect. - Kosuke Komatsu; Shohei Beppu; Daiki Soma; Yuta Wakayama; Noboru Yoshikane; Masahiko Jinno; Takehiro Tsuritani (OFC, 2025)

Demonstration of 4-Core/16-Core Fiber Heterogeneous Spatial Channel Network Comprising 19-Core Fiber Core Selective Switch-Based Spatial Gateway, 4-Core EDFAs, and 19-Core EDFAs. - Takumi Tani; Daiki Soma; Ryohei Otowa; Yusuke Matsuno; Kyosuke Nakada; Kosuke Komatsu; Yuji Hotta; Tsubasa Sasaki; Rika Tahara; Shohei Beppu; Koichi Maeda; Takuma Izumi; et al. (OFC, 2025)

Localising State-of-Polarisation Perturbation on a Repeatered Link Using Wavelength Dispersion Delay Walk-Off. - Kristina Skarvang Vaskinn; Daniel J. Elson; Shohei Beppu; Daiki Soma; Steinar Bjørnstad; Dag Roar Hjelme; Yuta Wakayama (OFC, 2025)

High-isolation and Low-crosstalk Optical-circulator-based 2-core Fan-out Device. - Yuta Wakayama; Asumi Kaya; Ikuya Saji; Shohei Beppu; Kosuke Komatsu; Daiki Soma; Taketoshi Takahata; Tetsuya Kobayashi; Lídia Galdino; Kevin Bennett; Sergejs Makovejs; Noboru Yoshikane; et al. (OFC, 2025)

LLM-centric Transport Network Configuration Management Framework and Demonstration. - Cen Wang; Noboru Yoshikane; Chenxiao Zhang; Yuta Wakayama; Daiki Soma; Takehiro Tsuritani (OFC, 2025)

Optical AllReduce: Ready to Eliminate Intra-DC In-cast Vulnerability for Deep Learning Training. - Yuepeng Wu; Cen Wang; Hongxiang Guo; Yuta Wakayama; Qiuyan Li; Noboru Yoshikane; Takehiro Tsuritani; Jian Wu (OFC, 2025)