Takeo Sasai

Publication Activity (10 Years)

Years Active: 2018-2024
Publications (10 Years): 24

Top Topics

Linear Least Squares

Noise Tolerance

Signal Processing

Top Venues

Publications

Fukutaro Hamaoka, Masanori Nakamura, Takeo Sasai, Shuto Sugawara, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki
110.7-Tb/s Single-Mode-Fiber Transmission over 1040 km with High-Symbol-Rate 144-GBaud PDM-PCS-QAM Signals. OFC (2024)
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
Semi-Automatic Line-System Provisioning with Integrated Physical-Parameter-Aware Methodology: Field Verification and Operational Feasibility. CoRR (2024)
Kenya Suzuki, Masashi Ota, Yoshie Morimoto, Keita Yamaguchi, Fukutaro Hamaoka, Shuto Sugawara, Takeo Sasai, Takayuki Kobayashi, Masanori Nakamura, Satomi Katayose, Takeshi Umeki, Daisuke Ogawa, Yiran Ma, Stefano Camatel, Mitsunori Fukutoku, Yutaka Miyamoto, Osamu Moriwaki
Double-decker CDC-ROADM node for multi-band network with wavelength band granularity. OFC (2024)
Takeo Sasai, Giacomo Borraccini, Yue-Kai Huang, Hideki Nishizawa, Zehao Wang, Tingjun Chen, Yoshiaki Sone, Tatsuya Matsumura, Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka
4D Optical Link Tomography: First Field Demonstration of Autonomous Transponder Capable of Distance, Time, Frequency, and Polarization Resolved Monitoring. OFC (2024)
Takeo Sasai, Minami Takahashi, Runa Kaneko, Yoshiaki Sone, Masanori Nakamura, Etsushi Yamazaki
Recent Advances in Digital Longitudinal Monitoring of Fiber-Optic Link. OFC (2024)
Runa Kaneko, Takeo Sasai, Fukutaro Hamaoka, Masanori Nakamura, Etsushi Yamazaki
Fiber Longitudinal Monitoring of Inter-band-SRS-induced Power Transition in S+C+L WDM Transmission. OFC (2024)
Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Hideki Nishizawa, Yoshiaki Kisaka
0.77-dB Anomaly Loss Localization Based on DSP-Based Fiber-Longitudinal Power Estimation Using Linear Least Squares. OFC (2023)
Hideki Nishizawa, Takeo Sasai, Takeru Inoue, Kazuya Anazawa, Toru Mano, Kei Kitamura, Yoshiaki Sone, Tetsuro Inui, Koichi Takasugi
Dynamic Optical Path Provisioning for Alien Access Links: Architecture, Demonstration, and Challenges. IEEE Commun. Mag. 61 (4) (2023)
Masanori Nakamura, Takeo Sasai, K. Saito, Fukutaro Hamaoka, Takayuki Kobayashi, Hiroshi Yamazaki, Munehiko Nagatani, Yoshihiro Ogiso, Hitoshi Wakita, Yoshiaki Kisaka, Y. Miyamoto
1.0-Tb/s/λ 3840-km and 1.2-Tb/s/λ 1280-km Transmissions with 168-GBaud PCS-QAM Signals Based on AMUX Integrated Frontend Module. OFC (2022)
Hideki Nishizawa, Takeo Sasai, Takeru Inoue, Kazuya Anazawa, Toru Mano, Kei Kitamura, Yoshiaki Sone, Tetsuro Inui, Koichi Takasugi
Dynamic optical path provisioning for alien access links: architecture, demonstration, and challenges. CoRR (2022)
Takeo Sasai, Etsushi Yamazaki, Masanori Nakamura, Yoshiaki Kisaka
Proposal of Linear Least Squares for Fiber-Nonlinearity-Based Longitudinal Power Monitoring in Multi-Span Link. OECC/PSC (2022)
Kohei Saito, Masanori Nakamura, Takeo Sasai, Takeshi Kakizaki, Fukutaro Hamaoka, Takayuki Kobayashi, Etsushi Yamazaki, Yoshiaki Kisaka
Impact of Local Oscillator Phase Noise on Long-Haul Transmission of 120-Gbaud Digital Sub-Carrier Signals. OFC (2022)
Fukutaro Hamaoka, Kohei Saito, Akira Masuda, Hiroki Taniguchi, Takeo Sasai, Masanori Nakamura, Takayuki Kobayashi, Yoshiaki Kisaka
112.8-Tb/s Real-Time Transmission over 101 km in 16.95-THz Triple-Band (S, C, and L Bands) WDM Configuration. OECC/PSC (2022)
Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka
Precise Longitudinal Power Monitoring over 2, 080 km Enabled by Step Size Selection of Split Step Fourier Method. OFC (2022)
Takeo Sasai, Masanori Nakamura, Takayuki Kobayashi, Hiroto Kawakami, Etsushi Yamazaki, Yoshiaki Kisaka
Revealing Raman-amplified Power Profile and Raman Gain Spectra with Digital Backpropagation. OFC (2021)
Hideki Nishizawa, Wataru Ishida, Yoshiaki Sone, Takafumi Tanaka, Seiki Kuwabara, Tetsuro Inui, Takeo Sasai, Masahito Tomizawa
Open whitebox architecture for smart integration of optical networking and data center technology [Invited]. JOCN 13 (1) (2021)
Hideki Maeda, Hiroki Kawahara, Kohei Saito, Takeshi Seki, Takeo Sasai, Fukutaro Hamaoka
Real-Time Demonstration of 500-Gbps/Lambda and 600-Gbps/Lambda WDM Transmission on Field-Installed Fibers. OFC (2020)
Fukutaro Hamaoka, Takeo Sasai, Kohei Saito, Takayuki Kobayashi, Asuka Matsushita, Masanori Nakamura, Hiroki Taniguchi, Shoichiro Kuwahara, Hiroki Kawahara, Takeshi Seki, Josuke Ozaki, Yoshihiro Ogiso, Hideki Maeda, Yoshiaki Kisaka, Masahito Tomizawa
Dual-Carrier 1-Tb/s Transmission Over Field-Deployed G.654.E Fiber Link Using Real-Time Transponder. IEICE Trans. Commun. (11) (2020)
Takeo Sasai, Masanori Nakamura, Seiji Okamoto, Fukutaro Hamaoka, Shuto Yamamoto, Etsushi Yamazaki, Asuka Matsushita, Hideki Nishizawa, Yoshiaki Kisaka
Simultaneous Detection of Anomaly Points and Fiber Types in Multi-Span Transmission Links Only by Receiver-Side Digital Signal Processing. OFC (2020)
Kohei Saito, Takeo Sasai, Fukutaro Hamaoka, Hiroki Kawahara, Takeshi Seki, Hideki Maeda
High spectral efficiency real-time 500-Gb/s/carrier transmission over field-installed G.654.E fiber link using forward and backward distributed Raman amplification. OFC (2020)
Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Shuto Yamamoto, Hideki Nishizawa, Yoshiaki Kisaka
Digital Backpropagation for Optical Path Monitoring: Loss Profile and Passband Narrowing Estimation. ECOC (2020)
Takeo Sasai, Asuka Matsushita, Masanori Nakamura, Seiji Okamoto, Fukutaro Hamaoka, Yoshiaki Kisaka
Experimental Analysis of Laser Phase Noise Tolerance of Uniform 256QAM and Probabilistically Shaped 1024QAM. OFC (2019)
Fukutaro Hamaoka, Takeo Sasai, Kohei Saito, Takayuki Kobayashi, Asuka Matsushita, Masanori Nakamura, Hiroki Taniguchi, Shoichiro Kuwahara, Hiroki Kawahara, Takeshi Seki, Josuke Ozaki, Yoshihiro Ogiso, Hideki Maeda, Yoshiaki Kisaka, Masahito Tomizawa
Dual-Carrier 1-Tb/s Transmission Over Field-Deployed Large-Core Pure-Silica-Core Fiber Link Using Real-Time Transponder. OECC/PSC (2019)
Fukutaro Hamaoka, Kyo Minoguchi, Takeo Sasai, Asuka Matsushita, Masanori Nakamura, Seiji Okamoto, Etsushi Yamazaki, Yoshiaki Kisaka
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. ECOC (2018)