Seiji Okamoto

According to our database, Seiji Okamoto authored at least 23 papers between 2010 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2024

Fast WDM provisioning with minimal probing: the first field experiments for DC exchanges.

Hideki Nishizawa, Toru Mano, Thomas Ferreira de Lima, Yue-Kai Huang, Zehao Wang, Wataru Ishida, Masahisa Kawashima, Ezra Ip, Andrea D'Amico, Seiji Okamoto, Takeru Inoue, Kazuya Anazawa, Vittorio Curri, Gil Zussman, Daniel C. Kilper, Tingjun Chen, Ting Wang, Koji Asahi, Koichi Takasugi

J. Opt. Commun. Netw., February, 2024

Semi-Automatic Line-System Provisioning with Integrated Physical-Parameter-Aware Methodology: Field Verification and Operational Feasibility.

Hideki Nishizawa, Giacomo Borraccini, Takeo Sasai, Yue-Kai Huang, Toru Mano, Kazuya Anazawa, Masatoshi Namiki, Soichiroh Usui, Tatsuya Matsumura, Yoshiaki Sone, Zehao Wang, Seiji Okamoto, Takeru Inoue, Ezra Ip, Andrea D'Amico, Tingjun Chen, Vittorio Curri, Ting Wang, Koji Asahi, Koichi Takasugi

CoRR, 2024

2020

Simultaneous Detection of Anomaly Points and Fiber Types in Multi-Span Transmission Links Only by Receiver-Side Digital Signal Processing.

Takeo Sasai, Masanori Nakamura, Seiji Okamoto, Fukutaro Hamaoka, Shuto Yamamoto, Etsushi Yamazaki, Asuka Matsushita, Hideki Nishizawa, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

2019

Experimental Analysis of Laser Phase Noise Tolerance of Uniform 256QAM and Probabilistically Shaped 1024QAM.

Takeo Sasai, Asuka Matsushita, Masanori Nakamura, Seiji Okamoto, Fukutaro Hamaoka, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

Low Complexity Sub-Band Digital Back Propagation.

Seiji Okamoto, Kengo Horikoshi, Masanori Nakamura, Asuka Matsushita, Fukutaro Hamaoka, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

1.04 Tbps/Carrier Probabilistically Shaped PDM-64QAM WDM Transmission Over 240 km Based on Electrical Spectrum Synthesis.

Masanori Nakamura, Fukutaro Hamaoka, Munehiko Nagatani, Hiroshi Yamazaki, Takayuki Kobayashi, Asuka Matsushita, Seiji Okamoto, Hitoshi Wakita, Hideyuki Nosaka, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

64-GBd PDM-256QAM and 92-GBd PDM-64QAM Signal Generation using Precise-Digital-Calibration aided by Optical-Equalization.

Asuka Matsushita, Masanori Nakamura, Kengo Horikoshi, Seiji Okamoto, Fukutaro Hamaoka, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

2018

4096 QAM (72 Gbit/s) Single-Carrier Coherent Optical Transmission with a Potential SE of 15.8 bit/s/Hz in All-Raman Amplified 160 km Fiber Link.

Masaki Terayama, Seiji Okamoto, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Experimental and Numerical Comparison of Probabilistically-Shaped 4096 QAM and Uniformly-Shaped 1024 QAM in All-Raman Amplified 160 km Transmission.

Seiji Okamoto, Masaki Terayama, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Laser Phase Noise Tolerance of Probabilistically-Shaped Constellations.

Seiji Okamoto, Fukutaro Hamaoka, Masanori Nakamura, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Observation of Guided Acoustic-Wave Brillouin Scattering and its Digital Compensation in Coherent QAM Transmission.

Masataka Nakazawa, Masaki Terayama, Seiji Okamoto, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Experiments on Stimulated Raman Scattering in S- and L-bands 16-QAM Signals for Ultra-Wideband Coherent WDM Systems.

Kyo Minoguchi, Seiji Okamoto, Fukutaro Hamaoka, A. Matsushita, Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Spectrally Efficient 800 Gbps/Carrier WDM Transmission with 100-GHz Spacing Using Probabilistically Shaped PDM-256QAM.

Masanori Nakamura, Asuka Matsushita, Seiji Okamoto, Fukutaro Hamaoka, Yoshiaki Kisaka

Proceedings of the European Conference on Optical Communication, 2018

Transmission Technologies Beyond 400-Gbps/Carrier Employing High-Order Modulation Formats.

Asuka Matsushita, Masanori Nakamura, Fukutaro Hamaoka, Seiji Okamoto

Proceedings of the European Conference on Optical Communication, 2018

Adaptive Compensation for SOA-Induced Nonlinear Distortion with Training-Based Estimation of SOA Device Parameters.

Fukutaro Hamaoka, Seiji Okamoto, Masanori Nakamura, Asuka Matsushita, Yoshiaki Kisaka

Proceedings of the European Conference on Optical Communication, 2018

150.3-Tb/s Ultra-Wideband (S, C, and L Bands) Single-Mode Fibre Transmission over 40-km Using >519Gb/s/A PDM-128QAM Signals.

Fukutaro Hamaoka, Kyo Minoguchi, Takeo Sasai, Asuka Matsushita, Masanori Nakamura, Seiji Okamoto, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the European Conference on Optical Communication, 2018

2017

400Gbit/s/ch Field Demonstration of Modulation Format Adaptation Based on Pilot-Aided OSNR Estimation Using Real-Time DSP.

Seiji Okamoto, Kazushige Yonenaga, Kengo Horikoshi, Mitsuteru Yoshida, Yutaka Miyamoto, Masahito Tomizawa, Takeshi Okamoto, Hidemi Noguchi, Jun-ichi Abe, Junichiro Matsui, Hisao Nakashima, Yuichi Akiyama, Takeshi Hoshida, Hiroshi Onaka, Kenya Sugihara, Soichiro Kametani, Kazuo Kubo, Takashi Sugihara

IEICE Trans. Commun., 2017

Experimental Demonstration of Simplified Adaptive Equalizer for Fractionally Sampled 120-GBaud Signal.

Fukutaro Hamaoka, Seiji Okamoto, Masanori Nakamura, Asuka Matsushita, Takayuki Kobayashi, Hiroshi Yamazaki, Munehiko Nagatani, Yoshiaki Kisaka, Akira Hirano, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communication, 2017

2016

Field experiment of OSNR-aware adaptive optical transmission with pilot-aided bidirectional feedback channel.

Seiji Okamoto, Kazushige Yonenaga, Fukutaro Hamaoka, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

Mode and polarization division multiplexed signal detection with single coherent receiver using mode-selective coherent detection technique.

Fukutaro Hamaoka, Seiji Okamoto, Kengo Horikoshi, Kazushige Yonenaga, Akira Hirano, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

2015

Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion.

Seiji Okamoto, Mitsuteru Yoshida, Kazushige Yonenaga, Tomoyoshi Kataoka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2015

2011

256 QAM Digital Coherent Optical Transmission Using Raman Amplifiers.

Masato Yoshida, Seiji Okamoto, Tatsunori Omiya, Keisuke Kasai, Masataka Nakazawa

IEICE Trans. Commun., 2011

2010

60Gbit/s 64 QAM-OFDM coherent optical transmission with a 5.3GHz bandwidth.

Tatsunori Omiya, Seiji Okamoto, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa

IEICE Electron. Express, 2010