Y
Yohei Sakamaki
Researcher at Nippon Telegraph and Telephone
Publications - 64
Citations - 799
Yohei Sakamaki is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Waveguide (optics) & Radiation mode. The author has an hindex of 15, co-authored 64 publications receiving 758 citations.
Papers
More filters
Proceedings ArticleDOI
69.1-Tb/s (432 × 171-Gb/s) C- and extended L-band transmission over 240 km Using PDM-16-QAM modulation and digital coherent detection
Akihide Sano,Hiroji Masuda,Takayuki Kobayashi,M. Fujiwara,Horikoshi Kengo,E. Yoshida,Yutaka Miyamoto,Munehiro Matsui,Masato Mizoguchi,Hiroshi Yamazaki,Yohei Sakamaki,Hiroyuki Ishii +11 more
TL;DR: In this paper, the authors demonstrate the record total capacity of 69.1 Tb/s with a spectral efficiency of 6.4 b/s/Hz by employing 21.4-Gbaud 16-QAM modulation, blind digital coherent detection, and 10.8-THz ultra-wideband amplification in the C- and extended L-bands.
Journal ArticleDOI
New Optical Waveguide Design Based on Wavefront Matching Method
TL;DR: The wavefront matching (WFM) method is expanded to create optimum waveguide shapes with low-loss and low-wavelength dependence in waveguide lenses, Y-branches, and waveguide crossings.
Journal ArticleDOI
Ultra-High Capacity WDM Transmission Using Spectrally-Efficient PDM 16-QAM Modulation and C- and Extended L-Band Wideband Optical Amplification
Akihide Sano,Hiroji Masuda,Takayuki Kobayashi,Masamichi Fujiwara,Horikoshi Kengo,E. Yoshida,Yutaka Miyamoto,Munehiro Matsui,Masato Mizoguchi,Hiroshi Yamazaki,Yohei Sakamaki,Hiroyuki Ishii +11 more
TL;DR: In this paper, the authors describe ultra-high capacity transmission based on spectrally efficient multi-level modulation and wideband optical amplification techniques and demonstrate 69.1 Tb/s transmission over 240 km of low loss pure silica core fibers.
30 x 100-Gb/s all-optical OFDM transmission over 1300 km SMF with 10 ROADM nodes
Akihide Sano,Hiroji Masuda,E. Yoshida,Takayuki Kobayashi,Eiichi Yamada,Yutaka Miyamoto,F. Inuzuka,Yoshinori Hibino,Yasushi Takatori,Kazuo Hagimoto,Takashi Yamada,Yohei Sakamaki +11 more
Proceedings Article
64QAM modulator with a hybrid configuration of silica PLCs and LiNbO 3 phase modulators for 100-Gb/s applications
TL;DR: In this paper, an optical 64QAM modulator operating at 60 Gb/s with single polarization was demonstrated, using a hybrid configuration of silica PLCs and LiNbO 3 phase modulators.