Kunimasa Saitoh

74 papers Journal 14Unranked 60

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	Fabrication-Tolerant Silicon Four-Mode (De)Multiplexer with Mode-Evolution-Based Devices at 2.1 μm Wavelength. ECOC Taichi Muratsubaki, Takanori Sato, Kunimasa Saitoh
2024	J	`jnl`	A silicon mode multiplexer based on the three-stage cascaded wavelength insensitive coupler for MDM-WDM transmission system. IEICE Electron. Express Kodai Nakamura, Takanori Sato, Kunimasa Saitoh
2024	—	`conf`	Stress Distribution Effects on Polarization-Mode Dispersion in Multi-Core Fibers. OFC Gustavo Ocampo, Yoshimichi Amma, Kunimasa Saitoh
2023	J	`jnl`	Design of PLC E IEICE Electron. Express Han Wang, Takeshi Fujisawa, Takanori Sato, Masaki Wada, Takayoshi Mori, Taiji Sakamoto, Ryota Imada, Takashi Matsui, Kazuhide Nakajima, Kunimasa Saitoh
2023	—	`conf`	Fabrication-tolerant, 2-mode, 4λ multiplexer based on Si waveguides for beyond Tbit/s optical Ethernet. OFC Takeshi Fujisawa, Kunimasa Saitoh
2023	—	`conf`	Relationship between Polarization Mode Dispersion and Crosstalk in Heterogeneous Multi-core Fibers with Different Cladding Diameters. OFC Gustavo Ocampo, Takanori Sato, Takeshi Fujisawa, Mayu Nakagawa, Kunimasa Saitoh
2022	—	`conf`	Analysis of Crosstalk Dependence on Cladding Diameter in Heterogeneous Multi-core Fibers by Considering Polarization-mode Coupling Effects. OECC/PSC Gustavo Ocampo, Takanori Sato, Takeshi Fujisawa, Yoshimichi Amma, Kunimasa Saitoh
2022	—	`conf`	Compact Power Splitters with Mosaic-based Structure Designed by Bayesian Direct-binary-search Method. OECC/PSC Takuya Mitarai, Takeshi Fujisawa, Takuya Okimoto, Naoya Kono, Naoki Fujiwara, Yusuke Sawada, Taichi Muratsubaki, Takanori Sato, Kunimasa Saitoh, Hideki Yagi
2022	—	`conf`	Silica-PLC based mode-dependent-loss equalizer for two LP mode transmission. OFC Takeshi Fujisawa, Takayoshi Mori, Junji Sakamoto, Yoko Yamashita, Taiji Sakamoto, Ryota Imada, Ryoto Ima, Takanori Sato, Kei Watanabe, Ryoichi Kasahara, Toshikazu Hashimoto, Kazuhide Nakajima, Kunimasa Saitoh
2021	—	`conf`	Experimental Demonstration of Broadband Silicon 4-Mode (de)Multiplexer Designed by Wavefront-Matching Method. OFC Yusuke Sawada, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
2021	J	`jnl`	High-tolerance CWDM4 wavelength multiplexer based on 2×2/2×1 MZ filters with polarization multiplexing. IEICE Electron. Express Kodai Nakamura, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
2021	—	`conf`	Multi-core Fiber Technology for SDM: Coupling Mechanisms and Design. OFC Kunimasa Saitoh
2020	—	`conf`	A Tunable Mode Divider Based on Wavelength Insensitive Coupler using Thermo-Optic Effect for Gain-Equalization in MDM Network. OFC Kodai Nakamura, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima, Kunimasa Saitoh
2020	—	`conf`	Few-mode Multi-core Fibres: Weakly-coupling and Randomly-coupling. ECOC Kunimasa Saitoh
2020	—	`conf`	Low-Loss Silicon 2 × 4λ Multiplexers Composed of On-Chip Polarization-Splitter-Rotator and 2 × 2 and 2 × 1 Mach-Zehnder Filters for 400GbE. OFC Junya Takano, Takeshi Fujisawa, Yusuke Sawada, Kunimasa Saitoh
2020	—	`conf`	Modal Amplitude and Phase Estimation of NFP of Six-Mode FMF Based on Artificial Neural Network with the Help of Grey-Wolf-Optimizer. ECOC Naoto Sugawara, Takeshi Fujisawa, Kodai Nakamura, Yusuke Sawada, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima, Kunimasa Saitoh
2020	—	`conf`	Wavefront-Matching-Method-Designed Six-Mode-Exchanger Based on Grating-Like Waveguide on Silica-PLC Platform. OFC Takeshi Fujisawa, Taiji Sakamoto, Masashi Miyata, Takashi Matsui, Toshikazu Hashimoto, Ryoichi Kasahara, Kazuhide Nakajima, Kunimasa Saitoh
2019	—	`conf`	3-Mode PLC-Based Mode Dependent Loss Equalizer in MDM Transmission. OECC/PSC Naoto Sugawara, Misa Kudo, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2019	—	`conf`	A Broadband Mode Divider with Arbitrary Branching Ratio Based on Wavelength-Insensitive Coupler. OFC Misa Kudo, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2019	—	`conf`	A Design of Low MDL Scrambling-type PLC 6-mode Multiplexer. OECC/PSC Motoki Shirata, Misa Kudo, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2019	J	`jnl`	CMOS-compatible Si-wire polarization beam splitter based on wavelength-insensitive coupler. IEICE Electron. Express Yusuke Sawada, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
2019	—	`conf`	Cladding Diameter Dependence of Inter-Core Crosstalk in Heterogeneous Multicore Fibers. OECC/PSC Kenta Nishimura, Takanori Sato, Takeshi Fujisawa, Yoshimichi Amma, Katsuhiro Takenaga, Kazuhiko Aikawa, Kunimasa Saitoh
2019	—	`conf`	Dynamic Crosstalk Study in a Few-Mode-Multi-Core Fiber. OFC Benjamin J. Puttnam, Georg Rademacher, Ruben S. Luis, Hideaki Furukawa, Andrew Ross-Adams, Simon Gross, Michael J. Withford, Nicolas Riesen, Yusuke Sasaki, Kunimasa Saitoh, Kazuhike Aikawa, Yoshinari Awaji, Naoya Wada
2019	—	`conf`	First Experimental Demonstration of Wavefront-Matching-Method-Designed Silicon Mode Converters. OFC Yusuke Sawada, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
2019	—	`conf`	Low-Loss and Fabrication-Tolerant Si Four-Wavelength Multiplexer using Higher-Order Mode for 100/400GbE. OFC Junya Takano, Takeshi Fujisawa, Takanori Sato, Yusuke Sawada, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2019	—	`conf`	Ultra-Robust Design of Mode (De)Multiplexer Based on Asymmetrical Directional Coupler Using Wire and One-Side Rib Waveguides. OECC/PSC Takanori Sato, Takeshi Fujisawa, Kunimasa Saitoh
2018	—	`conf`	1.2 Pb/s Transmission Over a 160 µm Cladding, 4-Core, 3-Mode Fiber, Using 368 C+L band PDM-256-QAM Channels. ECOC Ruben S. Luis, Georg Rademacher, Benjamin J. Puttnam, Tobias A. Eriksson, Hideaki Furukawa, Andrew Ross-Adams, Simon Gross, Michael J. Withford, Nicolas Riesen, Yusuke Sasaki, Kunimasa Saitoh, Kazuhiko Aikawa, Yoshinari Awaji, Naoya Wada
2018	—	`conf`	120 Spatial Channel Few-Mode Multi-Core Fibre with Relative Core Multiplicity Factor Exceeding 100. ECOC Taiji Sakamoto, Kunimasa Saitoh, Shota Saitoh, Yoshiteru Abe, Katsuhiro Takenaga, Azusa Urushibara, Masaki Wada, Takashi Matsui, Kazuhiko Aikawa, Kazuhide Nakajima
2018	J	`jnl`	A Review of PLC-Based Broadband Two-Mode Multi/Demultiplexer Designed by Wavefront Matching Method. IEICE Trans. Electron. Eri Taguchi, Takeshi Fujisawa, Yoko Yamashita, Shuntaro Makino, Nobutomo Hanzawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Fumihiko Yamamoto, Kunimasa Saitoh
2018	—	`conf`	DMD-Unmanaged Long-Haul SDM Transmission Over 2500-km 12-core × 3-mode MC-FMF and 6300-km 3-mode FMF Employing Intermodal Interference Cancelling Technique. OFC Kohki Shibahara, Takayuki Mizuno, L. Doowhan, Yutaka Miyamoto, Hirotaka Ono, Kazuhide Nakajima, S. Saitoh, Katsuhiro Takenaga, Kunimasa Saitoh
2018	—	`conf`	Iterative Unreplicated Parallel Interference Canceler for MDL-Tolerant Dense SDM 12-Core×3-Mode Transmission Over 3000 km. ECOC Kohki Shibahara, Takayuki Mizuno, Doowhan Lee, Yutaka Miyamoto, Hirotaka Ono, Kazuhide Nakajima, Yoshimichi Amma, Katsuhiro Takenaga, Kunimasa Saitoh
2018	J	`jnl`	Non-circular multi-core fibers for super-dense SDM. IEICE Electron. Express Md. Nooruzzaman, Kunimasa Saitoh, Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa, Toshio Morioka
2017	—	`conf`	1-Pb/s (32 SDM/46 WDM/768 Gb/s) C-band dense SDM transmission over 205.6-km of single-mode heterogeneous multi-core fiber using 96-Gbaud PDM-16QAM channels. OFC Takayuki Kobayashi, Masanori Nakamura, Fukutaro Hamaoka, Kohki Shibahara, Takayuki Mizuno, Akihide Sano, H. Kawakami, Akira Isoda, Munehiko Nagatani, Hiroshi Yamazaki, Yutaka Miyamoto, Yoshimichi Amma, Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa, Kunimasa Saitoh, Yongmin Jung, David J. Richardson, Klaus Pulverer, Marc Bohn, Md. Nooruzzaman, Toshio Morioka
2017	J	`jnl`	A photonic-plasmonic mode converter using mode-coupling-based polarization rotation for metal-inserted silicon platform. IEICE Electron. Express Yuhei Ishizaka, Masaru Nagai, Takeshi Fujisawa, Kunimasa Saitoh
2017	—	`conf`	Group Delay Spread Analysis of Few-Mode, Coupled 3-Core Fibres: Optimum Index Profile and Maximum Transmission Distance for Strong Coupling Regime. ECOC Kazuki Yoshida, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
2017	—	`conf`	High Spatial Density Six-mode Seven-core Fibre for Repeated Dense SDM Transmission. ECOC Taiji Sakamoto, Kunimasa Saitoh, Shota Saitoh, Kohki Shibahara, Masaki Wada, Yoshiteru Abe, Azusa Urushibara, Katsuhiro Takenaga, Takayuki Mizuno, Takashi Matsui, Kazuhiko Aikawa, Yutaka Miyamoto, Kazuhide Nakajima
2017	—	`conf`	Mach-Zehnder Mode/Wavelength (De)Multiplexer for WDM/MDM Optical Transmission. ECOC Shun Ohta, Takeshi Fujisawa, Shuntaro Makino, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2017	—	`conf`	One chip, PLC three-mode exchanger based on symmetric and asymmetric directional couplers with integrated mode rotator. OFC Takeshi Fujisawa, Eri Taguchi, Taiji Sakamoto, Takashi Matsui, Yoko Yamashita, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2017	—	`conf`	Scrambling-type three-mode multiplexer based on cascaded Y-branch waveguide with integrated mode rotator on PLC platform. OFC Takeshi Fujisawa, Yoko Yamashita, Taiji Sakamoto, Takashi Matsui, Shuntaro Makino, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
2017	—	`conf`	Ultimately low-loss and compact Si wire 90° waveguide bend composed of clothoid and normal curves for dense optical interconnect PICs. OFC Shuntaro Makino, Masahiro Suga, Takanori Sato, Takeshi Fujisawa, Kunimasa Saitoh
2016	—	`conf`	32-core Dense SDM unidirectional transmission of PDM-16QAM signals over 1600 km using crosstalk-managed single-mode heterogeneous multicore transmission line. OFC Takayuki Mizuno, Kohki Shibahara, Hirotaka Ono, Y. Abe, Yutaka Miyamoto, Feihong Ye, Toshio Morioka, Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, S. Matsuo, Kazuhiko Aikawa, Kunimasa Saitoh, Yongmin Jung, David J. Richardson, Klaus Pulverer, Marc Bohn, Makoto Yamada
2016	—	`conf`	Extremely small group delay spread six-core fiber with air-holes for mode-division-multiplexing: A principal mode analysis. OFC Takeshi Fujisawa, Ren Tojo, Shota Saitoh, Shoichiro Matsuo, Kunimasa Saitoh
2016	—	`conf`	High-density multicore fibers. OFC Katsuhiro Takenaga, Shoichiro Matsuo, Kunimasa Saitoh, Toshio Morioka, Yutaka Miyamoto
2016	—	`conf`	Low-loss and Low-DMD few-mode multi-core fiber with highest core multiplicity factor. OFC Taiji Sakamoto, Takashi Matsui, Kunimasa Saitoh, S. Saitoh, Katsuhiro Takenaga, Takayuki Mizuno, Yoshiteru Abe, Kohki Shibahara, Yuki Tobita, Shinji Matsuo, Kazuhiko Aikawa, Shinichi Aozasa, Kazuhide Nakajima, Yutaka Miyamoto
2016	—	`conf`	Space-time coding-assisted transmission for mitigation of MDL impact on mode-division multiplexed signals. OFC Kohki Shibahara, Takayuki Mizuno, Hidehiko Takara, H. Kawakami, D. Lee, Yutaka Miyamoto, S. Matsuo, Kunimasa Saitoh, Makoto Yamada
2015	—	`conf`	A principal mode analysis of strongly-coupled 3-core fibres. ECOC Takeshi Fujisawa, Kunimasa Saitoh
2015	—	`conf`	Demonstration of PLC-based six-mode multiplexer for mode division multiplexing transmission. ECOC Nobutomo Hanzawa, Kunimasa Saitoh, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Takeshi Fujisawa, Yuhei Ishizaka, Fumihiko Yamamoto
2015	—	`conf`	Dense SDM (12-core × 3-mode) transmission over 527 km with 33.2-ns mode-dispersion employing low-complexity parallel MIMO frequency-domain equalization. OFC Kohki Shibahara, Takayuki Mizuno, Hidehiko Takara, Akihide Sano, H. Kawakami, D. Lee, Yutaka Miyamoto, Hirotaka Ono, Manabu Oguma, Yoshiteru Abe, Takayuki Kobayashi, Takashi Matsui, Ryohei Fukumoto, Yoshimichi Amma, T. Hosokawa, S. Matsuo, Kunimasa Saitoh, H. Nasu, Toshio Morioka
2015	—	`conf`	Few-mode multi-core fibre with highest core multiplicity factor. ECOC Taiji Sakamoto, Takashi Matsui, Kunimasa Saitoh, Shota Saitoh, Katsuhiro Takenaga, Shoichiro Matsuo, Yuki Tobita, Nobutomo Hanzawa, Kazuhide Nakajima, Fumihiko Yamamoto
2015	—	`conf`	High-count multi-core fibers for space-division multiplexing with propagation-direction interleaving. OFC Feihong Ye, Kunimasa Saitoh, Hidehiko Takara, Rameez Asif, Toshio Morioka
2015	—	`conf`	High-density multicore fiber with heterogeneous core arrangement. OFC Yoshimichi Amma, Yusuke Sasaki, Katsuhiro Takenaga, S. Matsuo, J. Tu, Kunimasa Saitoh, Masanori Koshiba, Toshio Morioka, Yutaka Miyamoto
2015	—	`conf`	High-spatial-multiplicity multi-core fibres for future dense space-division-multiplexing system. ECOC Shoichiro Matsuo, Katsuhiro Takenaga, Kunimasa Saitoh, Kazuhide Nakajima, Yutaka Miyamoto, Toshio Morioka
2015	—	`conf`	Measurement of inter-core crosstalk in few-mode multicore fibre. ECOC S. Saitoh, Yusuke Sasaki, Katsuhiro Takenaga, M. Ohashi, Kunimasa Saitoh, Kazuhide Nakajima, Shinji Matsuo
2015	—	`conf`	Mode dependent loss equaliser and impact of MDL on PDM-16QAM few-mode fibre transmission. ECOC T. Mizuno, H. Takara, Kohki Shibahara, Yutaka Miyamoto, Manabu Oguma, Hirotaka Ono, Y. Abe, Takashi Matsui, S. Matsuo, Kunimasa Saitoh, Y. Kimura
2015	—	`conf`	Multicore fiber technology. OFC Kunimasa Saitoh
2015	—	`conf`	Quasi-single-mode homogeneous 31-core fibre. ECOC Yusuke Sasaki, S. Saitoh, Yoshimichi Amma, Katsuhiro Takenaga, S. Matsuo, Kunimasa Saitoh, Toshio Morioka, Yutaka Miyamoto
2014	—	`conf`	12-core × 3-mode dense space division multiplexed transmission over 40 km employing multi-carrier signals with parallel MIMO equalization. OFC Takayuki Mizuno, Takayuki Kobayashi, Hidehiko Takara, Akihide Sano, Hiroto Kawakami, T. Nakagawa, Yutaka Miyamoto, Yoshiteru Abe, T. Goh, Manabu Oguma, Taiji Sakamoto, Yusuke Sasaki, Itaru Ishida, Katsuhiro Takenaga, Shoichiro Matsuo, Kunimasa Saitoh, Toshio Morioka
2014	—	`conf`	Dependence of crosstalk increase due to tight bend on core layout of multi-core fiber. OFC Tetsuya Hayashi, Tetsuya Nakanishi, Takashi Sasaki, Kunimasa Saitoh, Masanori Koshiba
2014	—	`conf`	Few-mode multicore fibre with 36 spatial modes (Three modes (LP01, LP11a, LP11b) ×12 cores). ECOC Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, Shoichiro Matsuo, Kunimasa Saitoh, Masanori Koshiba
2014	—	`conf`	Four-mode PLC-based mode multi/demultiplexer with LP11 mode rotator on one chip for MDM transmission. ECOC Nobutomo Hanzawa, Kunimasa Saitoh, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Takui Uematsu, Fumihiko Yamamoto
2014	—	`conf`	Mode multiplexer/demultiplexer based on a partially elongated multi-core fiber. OFC H. Uemura, Yusuke Sasaki, S. Nishimoto, Takui Uematsu, Katsuhiro Takenaga, K. Omichi, R. Goto, Shinji Matsuo, Kunimasa Saitoh
2014	—	`conf`	Multicore fibre-based mode multiplexer/demultiplexer for three-mode operation of LP01, LP11a, and LP11b. ECOC Katsuhiro Takenaga, H. Uemura, Yusuke Sasaki, S. Nishimoto, Takui Uematsu, K. Omichi, R. Goto, S. Matsuo, Kunimasa Saitoh
2014	—	`conf`	PLC-type LP11 mode rotator with single-trench waveguide for mode-division multiplexing transmission. OFC Takui Uematsu, Nobutomo Hanzawa, Kunimasa Saitoh, Yuhei Ishizaka, Kouhei Masumoto, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Fumihiko Yamamoto
2013	—	`conf`	All-solid photonic bandgap fiber with record mode area. OFC/NFOEC Fanting Kong, Kunimasa Saitoh, Devon Mcclane, Thomas W. Hawkins, Paul Foy, Guancheng Gu, Liang Dong
2013	—	`conf`	Investigation of crosstalk dependencies on bending radius of heterogeneous multicore fiber. OFC/NFOEC Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, S. Matsuo, Kunimasa Saitoh, Masanori Koshiba
2013	—	`conf`	Low-loss and broadband PLC-type mode (de)multiplexer for mode-division multiplexing transmission. OFC/NFOEC Takui Uematsu, Kunimasa Saitoh, Nobutomo Hanzawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Masanori Koshiba
2013	—	`conf`	Recent progress on multi-core fiber and few-mode fiber. OFC/NFOEC S. Matsuo, Yusuke Sasaki, I. Ishida, Katsuhiro Takenaga, Kunimasa Saitoh, Masanori Koshiba
2011	J	`jnl`	An Investigation on Crosstalk in Multi-Core Fibers by Introducing Random Fluctuation along Longitudinal Direction. IEICE Trans. Commun. Katsuhiro Takenaga, Yoko Arakawa, Shoji Tanigawa, Ning Guan, Shoichiro Matsuo, Kunimasa Saitoh, Masanori Koshiba
2011	J	`jnl`	Crosstalk behavior of cores in multi-core fiber under bent condition. IEICE Electron. Express Shoichiro Matsuo, Katsuhiro Takenaga, Yoko Arakawa, Yusuke Sasaki, Shoji Tanigawa, Kunimasa Saitoh, Masanori Koshiba
2011	J	`jnl`	Crosstalk behavior of multi-core fiber with structural parameter drift in longitudinal direction. IEICE Electron. Express Shoichiro Matsuo, Katsuhiro Takenaga, Yoko Arakawa, Yusuke Sasaki, Shoji Tanigawa, Kunimasa Saitoh, Masanori Koshiba
2009	J	`jnl`	Design of effectively single-mode leakage channel fibers with large mode area and low bending loss. IEICE Electron. Express Kunimasa Saitoh, Yukihiro Tsuchida, Masanori Koshiba
2009	J	`jnl`	Heterogeneous multi-core fibers: proposal and design principle. IEICE Electron. Express Masanori Koshiba, Kunimasa Saitoh, Yasuo Kokubun
2006	J	`jnl`	Transmission characteristics of laterally illuminated photonic crystal fibers. IEICE Electron. Express Keiichi Morikawa, Takeshi Fujisawa, Kunimasa Saitoh, Masanori Koshiba
2005	J	`jnl`	Fundamental Characteristics of Localized Acoustic Modes in Photonic Crystal Fibers. IEICE Trans. Electron. Ikumi Enomori, Kunimasa Saitoh, Masanori Koshiba