Ryoichi Kasahara

According to our database, Ryoichi Kasahara authored at least 20 papers between 2016 and 2022.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of three.

2022

Channel Arrangement Design in Lumped Amplified WDM Transmission over NZ-DSF Link with Nonlinearity Mitigation Using Optical Phase Conjugation.

Shimpei Shimizu, Takayuki Kobayashi, Takeshi Umeki, Takushi Kazama, Koji Enbutsu, Ryoichi Kasahara, Yutaka Miyamoto

IEICE Trans. Commun., 2022

Silica-PLC based mode-dependent-loss equalizer for two LP mode transmission.

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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

2021

Wideband PPLN-based optical parametric amplifiers for scalable optical transport network.

Yutaka Miyamoto, Takayuki Kobayashi, Takeshi Umeki, Takushi Kazama, Koji Enbutsu, Shimpei Shimizu, Ryoichi Kasahara

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

8-Tbps (20 × 400 Gbps) Unrepeated Transmission over 80 km with 2-THz PPLN-Based Phase-Sensitive Amplification Using Precise Chromatic Dispersion Pre-Compensation.

Shimpei Shimizu, Takayuki Kobayashi, Takushi Kazama, Takeshi Umeki, Masanori Nakamura, Koji Enbutsu, Ryoichi Kasahara, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communication, 2021

13.4-Tb/s WDM Transmission over 1, 280 km Repeated only with PPLN-based Optical Parametric Inline Amplifier.

Takayuki Kobayashi, Shimpei Shimizu, Masanori Nakamura, Takushi Kazama, Takeshi Umeki, Ryoichi Kasahara, Fukutaro Hamaoka, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communication, 2021

2020

Nonlinearity Mitigation of PDM-16QAM Signals Using Multiple CSI-OPCs in Ultra-Long-Haul Transmission without Excess Penalty.

Takeshi Umeki, Takayuki Kobayashi, Akihide Sano, Takuya Ikuta, Masashi Abe, Takushi Kazama, Koji Enbutsu, Ryoichi Kasahara, Yutaka Miyamoto

IEICE Trans. Commun., 2020

PPLN-Based Low-Noise Phase Sensitive Amplification Using an Optical Phase-Locked Pump.

Takushi Kazama, Takeshi Umeki, Yasuhiro Okamura, Koji Enbutsu, Osamu Tadanaga, Atsushi Takada, Ryoichi Kasahara

IEICE Trans. Commun., 2020

Collective and synchronous dynamics of photonic spiking neurons.

Takahiro Inagaki, Kensuke Inaba, Timothée G. Leleu, Toshimori Honjo, Takuya Ikuta, Koji Enbutsu, Takeshi Umeki, Ryoichi Kasahara, Kazuyuki Aihara, Hiroki Takesue

CoRR, 2020

Gain Ripple and Passband Narrowing Due to Residual Chromatic Dispersion in Non-Degenerate Phase-Sensitive Amplifiers.

Shimpei Shimizu, Takushi Kazama, Takayuki Kobayashi, Takeshi Umeki, Koji Enbutsu, Ryoichi Kasahara, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

Wideband Inline-Amplified WDM Transmission using PPLN-Based OPA with Over-10-THz Bandwidth.

Takayuki Kobayashi, Shimpei Shimizu, Masahito Nakamura, Takeshi Umeki, Takushi Kazama, Ryoichi Kasahara, Fukutaro Hamaoka, Munehiko Nagatani, Hiroshi Yamazaki, Takayuki Mizuno, Hideyuki Nosaka, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

Wavefront-Matching-Method-Designed Six-Mode-Exchanger Based on Grating-Like Waveguide on Silica-PLC Platform.

Takeshi Fujisawa, Taiji Sakamoto, Masashi Miyata, Takashi Matsui, Toshikazu Hashimoto, Ryoichi Kasahara, Kazuhide Nakajima, Kunimasa Saitoh

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

2019

Nonlinearity mitigation of PDM-16QAM signal using multiple CSI-OPCs in ultra-long haul transmission without excess penalty.

Takeshi Umeki, Takayuki Kobayashi, Akihide Sano, Takuya Ikuta, Masashi Abe, Takushi Kazama, Koji Enbutsu, Ryoichi Kasahara, Yutaka Miyamoto

Proceedings of the 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019

1.4μm-1.6μm Wavelength Conversion Using Multiple Quasi-Phase Matching LiNbO3.

Saroeun Punhavan, Masato Kato, Keisuke Sugiyama, Masaki Asobe, Takeshi Umeki, Koji Enbutsu, Takushi Kazama, Takahiro Kashiwazaki, Ryoichi Kasahara

Proceedings of the 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019

Low-Noise Phase Sensitive Amplification Using an Optical Phase-Locked Pump.

Takushi Kazama, Takeshi Umeki, Yasuhiro Okamura, Koji Enbutsu, Osamu Tadanaga, Atsushi Takada, Ryoichi Kasahara

Proceedings of the 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019

2018

Scaling advantages of all-to-all connectivity in physical annealers: the Coherent Ising Machine vs. D-Wave 2000Q.

Ryan Hamerly, Takahiro Inagaki, Peter L. McMahon, Davide Venturelli, Alireza Marandi, Tatsuhiro Onodera, Edwin Ng, Carsten Langrock, Kensuke Inaba, Toshimori Honjo, Koji Enbutsu, Takeshi Umeki, Ryoichi Kasahara, Shoko Utsunomiya, Satoshi Kako, Ken-ichi Kawarabayashi, Robert L. Byer, Martin M. Fejer, Hideo Mabuchi, Eleanor Gilbert Rieffel, Hiroki Takesue, Yoshihisa Yamamoto

CoRR, 2018

Polarization-diversity In-line Phase Sensitive Amplifier for Simultaneous Amplification of Fiber-transmitted WDM PDM-16QAM Signals.

Takeshi Umeki, Takushi Kazama, Takayuki Kobayashi, Shigehiro Takasaka, Yasuhiro Okamura, Koji Enbutsu, Osamu Tadanaga, Hirokazu Takenouchi, Ryuichi Sugizaki, Atsushi Takada, Ryoichi Kasahara, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Towards Practical Implementation of Optical Parametric Amplifiers Based on PPLN Waveguides.

Takeshi Umeki, Takushi Kazama, Takayuki Kobayashi, Koji Enbutsu, Osamu Tadanaga, Hirokazu Takenouchi, Ryoichi Kasahara, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Over-100-Spatial-Channel Programmable Spectral Processor for SDM Signal Monitoring.

Mitsumasa Nakajima, Kenya Suzuki, Kazunori Seno, Takashi Goh, Ryoichi Kasahara, Mitsunori Fukutoku, Yutaka Miyamoto, Toshikazu Hashimoto

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

96-Gbaud PDM-8QAM Single Channel Transmission over 9, 600 km by Nonlinear Tolerance Enhancement using PPLN-based Optical Phase Conjugation.

Takayuki Kobayashi, Takeshi Umeki, Ryoichi Kasahara, Hiroshi Yamazaki, Munehiko Nagatani, Hitoshi Wakita, Hirokazu Takenouchi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

2016

Robust respiration rate estimation using adaptive Kalman filtering with textile ECG sensor and accelerometer.

Nicholas N. Lepine, Takuro Tajima, Takayuki Ogasawara, Ryoichi Kasahara, Hiroshi Koizumi

Proceedings of the 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2016