Shigehiro Takasaka

46 papers Journal 2Unranked 44

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	Spatial channel network (SCN): implementation and feasibility demonstrations of modular spatial cross-connects using three types of packaged 19-core-fiber-based optical switches. J. Opt. Commun. Netw. Masahiko Jinno, Ryohei Otowa, Yusuke Matsuno, Daiki Soma, Ryunosuke Sasaki, Yuji Hotta, Tsubasa Sasaki, Kosuke Komatsu, Takuma Izumi, Koichi Maeda, Shohei Beppu, Kyosuke Nakada, Shigehiro Takasaka, Yuta Wakayama, Rika Tahara, Noboru Yoshikane, Takumi Tani, Yasuki Sakurai, Ryuichi Sugizaki, Takehiro Tsuritani
2025	—	`conf`	Full C-band 3317-km 12-Coupled-Core-Fiber Transmission with 266.2-Tbps Capacity Using Field-Installed Fiber-Optic Cable. OFC Kohki Shibahara, Akira Kawai, Megumi Hoshi, Masanori Nakamura, Takayuki Kobayashi, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Yusuke Yamada, Kazuhide Nakajima, Munehiko Nagatani, Hitoshi Wakita, Yuta Shiratori, Hiroshi Yamazaki, Hiroyuki Takahashi, Soichi Endo, Takemi Hasegawa, Koichi Maeda, Shigehiro Takasaka, Ryo Nagase, Yutaka Miyamoto
2025	—	`conf`	Phase-preserving amplitude regeneration in a Mamyshev regenerator with group-delay-managed nonlinear medium and mid-stage optical phase conjugation. OFC Cheng Guo, Hamed Rabbani, Mohammad Awwad, Youichi Akasaka, Paparao Palacharla, Ryuichi Sugizaki, Shigehiro Takasaka, Michael Vasilyev
2025	—	`conf`	Practical Wavelength Conversion Techniques Using Highly Nonlinear Fibers. OFC Shigehiro Takasaka, Ryuichi Sugizaki, Masanori Takahashi
2025	—	`conf`	Real-Time SDM-MIMO Transmission with 12-Coupled SDM Channels Over Field-Installed Fibre Cable. ECOC Kohki Shibahara, Akira Kawai, Megumi Hoshi, Manabu Arikawa, Kohei Hosokawa, Takaya Maeda, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Yusuke Yamada, Kazuhide Nakajima, Soichi Endo, Takemi Hasegawa, Koichi Maeda, Shigehiro Takasaka, Ryo Nagase, Takayuki Kobayashi, Yutaka Miyamoto
2025	J	`jnl`	Reduction of Fiber Four-Wave Mixing Generated from Modulated Lights by Inserting Dispersive Elements. IEICE Trans. Commun. Ayano Inoue, Koji Igarashi, Shigehiro Takasaka, Kyo Inoue
2025	—	`conf`	SDM Transmission Technologies Enabling Over-10-Tb/S SDM-MIMO Signals. ECOC Akira Kawai, Kohki Shibahara, Masanori Nakamura, Megumi Hoshi, Takayuki Kobayashi, Ryota Imada, Takayoshi Mori, Taiji Sakamoto, Yusuke Yamada, Kazuhide Nakajima, Munehiko Nagatani, Hitoshi Wakita, Yuta Shiratori, Hiroshi Yamazaki, Hiroyuki Takahashi, Soichi Endo, Takemi Hasegawa, Koichi Maeda, Shigehiro Takasaka, Ryo Nagase, Yutaka Miyamoto
2025	—	`conf`	Transmission Distance Extension by Using Wideband Incoherent Forward Pumps in Bidirectional Distributed Raman Amplification Compared to Coherent Pumps. OFC Daichi Ogata, Shigehiro Takasaka, Junji Yoshida, Norihiro Ohishi
2024	—	`conf`	C+L Band Transmission under Bidirectionally Pumped Distributed Raman Amplification Using Semiconductor Incoherent Pumps. OFC Shigehiro Takasaka, Daichi Ogata, Ayato Shirai, Satoru Ichihara, Junji Yoshida, Norihiro Ohishi
2024	—	`conf`	Continuous 16.4-THz Bandwidth Coherent DWDM Transmission in O-band using a Single Fibre Amplifier System. OFC 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, Noboru Yoshikane, Takehiro Tsuritani, Yuta Wakayama
2023	—	`conf`	Design and applications of Highly nonlinear fibers. OFC Ryuichi Sugizaki, Masanori Takahashi, Shigehiro Takasaka, Toshio Kimura
2023	—	`conf`	Quasi-Constant Signal Power Transmission with Low Signal RIN by DRA with Incoherent-Forward and Coherent-Backward Pumps. OFC Shigehiro Takasaka, Norihiro Ohishi, Satoru Ichihara, Nitidet Thudsalingkarnsakul, Naoya Hojo, Yasuto Tatamida, Junji Yoshida, Sanguan Anantathanasarn, Toshio Kimura
2023	—	`conf`	Temperature-tuned two-segment highly-nonlinear fiber with increased stimulated Brillouin scattering threshold. OFC Cheng Guo, Michael Vasilyev, Youichi Akasaka, Paparao Palacharla, Shigehiro Takasaka, Ryuichi Sugizaki
2022	—	`conf`	50-Tb/s (1 Tb/s × 50 ch) WDM Transmission on Two 6.25-THz Bands Using Hybrid Inline Repeater of PPLN-based OPAs and Incoherent-forward-pumped DRA. OFC Takayuki Kobayashi, Shimpei Shimizu, Masanori Nakamura, Takeshi Umeki, Takushi Kazama, Junji Yoshida, Shigehiro Takasaka, Yasuto Tatamida, Hiroto Kawakami, Fukutaro Hamaoka, Munehiko Nagatani, Hiroshi Yamazaki, Kei Watanabe, Takashi Saida, Yutaka Miyamoto
2022	—	`conf`	S-band Amplifier Using Highly Nonlinear Fibers. OECC/PSC Youichi Akasaka, Shigehiro Takasaka, Ryuichi Sugizaki, Cheng Guo, Michael Vasilyev
2021	—	`conf`	Digital Compensation of Residual Pump Dithering in Optical Phase Conjugation of High-Order QAM. OFC Tu Thanh Nguyen, Sonia K. Boscolo, Abdallah A. I. Ali, Mingming Tan, Stylianos Sygletos, Shigehiro Takasaka, Ryuichi Sugizaki, Andrew D. Ellis
2021	—	`conf`	Kernel-Based Learning-Aided Phase Noise Compensation in Dual-Pump Optical Phase Conjugation Coherent System. OFC Tu Thanh Nguyen, Sonia K. Boscolo, Abdallah A. I. Ali, Mingming Tan, Tingting Zhang, Shigehiro Takasaka, Ryuichi Sugizaki, Stylianos Sygletos, Andrew D. Ellis
2021	—	`conf`	Multicore Erbium Doped Fibre Amplification Techniques. ECOC Shigehiro Takasaka
2021	—	`conf`	Reduced Impact of Frequency Dithering on the Performance of High-Order Modulation Format Phase Conjugation. OFC Abdallah A. I. Ali, Tu Thanh Nguyen, Sonia K. Boscolo, Shigehiro Takasaka, Ryuichi Sugizaki, Andrew D. Ellis
2020	—	`conf`	Output Power Increase of Cladding Pumped 7-core EDFA by Using Mie Scattering. ECOC Shigehiro Takasaka, Koichi Maeda, Ryuichi Sugizaki, Yoshihiro Arashitani
2019	—	`conf`	0.715 Pb/s Transmission Over 2, 009.6 km in 19-Core Cladding Pumped EDFA Amplified MCF Link. OFC Benjamin J. Puttnam, Georg Rademacher, Ruben S. Luis, Tobias A. Eriksson, Werner Klaus, Yoshinari Awaji, Naoya Wada, Koichi Maeda, Shigehiro Takasaka, Ryuichi Sugizaki
2019	—	`conf`	Cladding Pump Recycling Device for 19-Core EDFA. OFC Shigehiro Takasaka, Koichi Maeda, Kohei Kawasaki, Kazuaki Yoshioka, Ryuichi Sugizaki, Masayoshi Tsukamoto
2019	—	`conf`	Highly Nonlinear Fiber for Optical Parametric Amplifier. OFC Shigehiro Takasaka
2019	—	`conf`	PDM-16QAM WDM Transmission with 2 OFC Takayuki Kobayashi, Masahito Morimoto, Haruki Ogoshi, Junji Yoshida, Shigehiro Takasaka, Yutaka Miyamoto
2019	—	`conf`	Propagation Direction Interleaved Cladding Pumped 19-core EDFA. OECC/PSC Koichi Maeda, Shigehiro Takasaka, Kohei Kawasaki, Kazuaki Yoshioka, Ryuichi Sugizaki, Masayoshi Tsukamoto
2019	—	`conf`	Transmission and Crosstalk Measurements in MC-EDFA amplified 19-core link. OECC/PSC Benjamin J. Puttnam, Georg Rademacher, Ruben S. Luís, Tobias A. Eriksson, Werner Klaus, Yoshinari Awaji, Naoya Wada, Koichi Maeda, Shigehiro Takasaka, Ryuichi Sugizaki
2019	—	`conf`	WDM Amplification of One Pump HNLF Based Phase Sensitive Amplifier with Static Pump Phase Tuning. OFC Youichi Akasaka, Yinwen Cao, Shigehiro Takasaka, Kenji Yamauchi, Koichi Maeda, Haoqian Song, Ryuichi Sugizaki, Alan E. Willner, Tadashi Ikeuchi
2018	—	`conf`	Cladding Pump Recycling in 7-Core EDFA. ECOC Shigehiro Takasaka, Koichi Maeda, Kohei Kawasaki, Kazuaki Yoshioka, Ryuichi Sugizaki, Masayoshi Tsukamoto
2018	—	`conf`	EDF Length Dependence of Amplification Characteristics of Cladding Pumped 19-Core EDFA. OFC Shigehiro Takasaka, Koichi Maeda, Kohei Kawasaki, Kazuaki Yoshioka, Hajime Oshio, Ryuichi Sugizaki, Hidenori Takahashi, Takehiro Tsuritani, Masato Shiino
2018	—	`conf`	Experimental Demonstration of 1480nm Cladding Pumped Multicore EDFA. ECOC Keiichi Matsumoto, Hitoshi Takeshita, K. Maeda, Shigehiro Takasaka, Ryuichi Sugizaki, Emmanuel Le Taillandier de Gabory
2018	—	`conf`	Long-Haul MCF Transmission Using Full C+L-Band 19-Core Cladding-Pumped EDFA. ECOC Daiki Soma, Shohei Beppu, Koichi Maeda, Shigehiro Takasaka, Ryuichi Sugizaki, Hidenori Takahashi, Takehiro Tsuritani
2018	—	`conf`	Polarization-diversity In-line Phase Sensitive Amplifier for Simultaneous Amplification of Fiber-transmitted WDM PDM-16QAM Signals. OFC Takeshi Umeki, Takushi Kazama, Takayuki Kobayashi, Shigehiro Takasaka, Yasuhiro Okamura, Koji Enbutsu, Osamu Tadanaga, Hirokazu Takenouchi, Ryuichi Sugizaki, Atsushi Takada, Ryoichi Kasahara, Yutaka Miyamoto
2017	—	`conf`	Design and demonstration of 30-nm tunable guard-band-less all-optical wavelength converter for WDM signals. OFC Takashi Inoue, Shigehiro Takasaka, Kazuya Ota, Shu Namiki
2017	—	`conf`	Experimental demonstration of Raman-assisted phase sensitive amplifier with reduced ASE noise level and more than 25dB net gain. OFC Yinwen Cao, Ahmed Almaiman, Youichi Akasaka, Fatemeh Alishahi, Morteza Ziyadi, A. Mohajerin-Ariaei, Changjing Bao, Peicheng Liao, Ahmad Fallahpour, B. Shamee, Tadashi Ikeuchi, Shigehiro Takasaka, Ryuichi Sugizaki, Joseph D. Touch, Moshe Tur, Alan E. Willner
2017	—	`conf`	Increase of Cladding Pump Power Efficiency by a 19-Core Erbium Doped Fibre Amplifier. ECOC Shigehiro Takasaka, Koichi Maeda, Kohei Kawasaki, Kazuaki Yoshioka, Hajime Oshio, Ryuichi Sugizaki, Yu Kawaguchi, Hidenori Takahashi, Takehiro Tsuritani, Masato Shiino
2017	—	`conf`	Three-stage quasi-phase-matched fiber optical parametric amplifier with flat 30-dB gain with 31-nm bandwidth. OFC Shigehiro Takasaka, Ryuichi Sugizaki
2016	—	`conf`	Polarization insensitive fiber optical parametric amplifier using a SBS suppressed diversity loop. OFC Shigehiro Takasaka, Ryuichi Sugizaki
2015	—	`conf`	Dynamic parametric dispersion compensation using FPGA pump controller and dispersion monitor. OFC Ken Tanizawa, Hiroyuki Matsuura, Kensuke Ogawa, Toshimitsu Kaneko, Eiichi Banno, Katsumi Uesaka, Shigehiro Takasaka, Hidenori Iwai, Kazuya Ota, Haruhiko Kuwatsuka, Yoichi Oikawa, Takeshi Yagi, Hajime Shoji, Shu Namiki
2015	—	`conf`	Experimental demonstration of Raman-assisted phase sensitive amplifier with negligible gain/power fluctuation. ECOC Youichi Akasaka, Jeng-Yuan Yang, M. Sekiya, Tadashi Ikeuchi, Yinwen Cao, Ahmed Almaiman, Morteza Ziyadi, A. Mohajerin-Ariaei, Peicheng Liao, Alan E. Willner, Shigehiro Takasaka, Ryuichi Sugizaki
2015	—	`conf`	Experimental demonstration of optical signal level swapping and multi-level amplitude noise mitigation using three parametric gain regions. OFC Yinwen Cao, Morteza Ziyadi, Youichi Akasaka, Amirhossein Mohajerin Ariaei, Jeng-Yuan Yang, Ahmed Almaiman, Peicheng Liao, Shigehiro Takasaka, Ryuichi Sugizaki, Joseph D. Touch, M. Sekiya, Moshe Tur, Alan E. Willner
2015	—	`conf`	Experimental demonstration of tunable phase-noise mitigation and automatic frequency/phase locking for a 20-32 Gbaud QPSK homodyne receiver using optical mixing of nonlinearly generated higher harmonics. OFC A. Mohajerin-Ariaei, Morteza Ziyadi, M. R. Chitgarha, Ahmed Almaiman, Yinwen Cao, Youichi Akasaka, Jeng-Yuan Yang, M. Sekiya, Joseph D. Touch, Moshe Tur, Shigehiro Takasaka, Ryuichi Sugizaki, Carsten Langrock, Martin M. Fejer, Alan E. Willner
2014	—	`conf`	Bit-rate-tunable regeneration of 30-Gbaud QPSK data using phase quantization and amplitude saturation. ECOC A. Mohajerin-Ariaei, Youichi Akasaka, Jeng-Yuan Yang, M. R. Chitgarha, Morteza Ziyadi, Yinwen Cao, Ahmed Almaiman, Joseph D. Touch, Moshe Tur, M. Sekiya, Shigehiro Takasaka, Ryuichi Sugizaki, Carsten Langrock, Martin M. Fejer, Alan E. Willner
2014	—	`conf`	Counter-dithering pump scheme for cascaded degenerate FWM based wavelength converter. OFC Hung Nguyen Tan, Takashi Inoue, Ken Tanizawa, Stephane Petit, Yoichi Oikawa, Shigehiro Takasaka, Takeshi Yagi, Shu Namiki
2014	—	`conf`	Quasi phase-matched FOPA with 50 nm gain bandwidth using dispersion stable highly nonlinear fiber. OFC Shigehiro Takasaka, Yuki Taniguchi, Masanori Takahashi, Jiro Hiroshi, Masateru Tadakuma, Hiroshi Matsuura, Kohei Doi, Ryuichi Sugizaki
2014	—	`conf`	Wideband parametric processing with 1-dB bandwidth of 40nm using dispersion stable PM-HNLF. ECOC Shigehiro Takasaka, Yuki Taniguchi, Masanori Takahashi, Jiro Hiroshi, Masateru Tadakuma, Ryuichi Sugizaki
2013	—	`conf`	FOPA with flat 21-dB gain and NF less than 4-dB using alternately concatenated pump-phase shifters and HNLFs. OFC/NFOEC Shigehiro Takasaka, Yu Mimura, Hiroshi Matsuura, Masahito Morimoto, Masanori Takahashi, Ryuichi Sugizaki