K
Kohki Shibahara
Researcher at Harvard University
Publications - 69
Citations - 1124
Kohki Shibahara is an academic researcher from Harvard University. The author has contributed to research in topics: Transmission (telecommunications) & MIMO. The author has an hindex of 15, co-authored 59 publications receiving 881 citations. Previous affiliations of Kohki Shibahara include Nippon Telegraph and Telephone.
Papers
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Journal ArticleDOI
Dense Space Division Multiplexed Transmission Over Multicore and Multimode Fiber for Long-haul Transport Systems
TL;DR: In this article, the authors discuss the requirements for realizing long-haul DSDM transport systems using multicore and/or multimode fiber, including power and space efficient amplification schemes, the use of fibers with large effective areas and transmission lines with low intercore crosstalk, low differential mode delay (DMD), and low mode dependent loss (MDL).
Proceedings ArticleDOI
Dense SDM (12-core × 3-mode) transmission over 527 km with 33.2-ns mode-dispersion employing low-complexity parallel MIMO frequency-domain equalization
Kohki Shibahara,Takayuki Mizuno,Hidehiko Takara,Akihide Sano,Hiroto Kawakami,D. Lee,Yutaka Miyamoto,Hirotaka Ono,Manabu Oguma,Yoshiteru Abe,Takayuki Kobayashi,Takashi Matsui,Ryohei Fukumoto,Yoshimichi Amma,Tsukasa Hosokawa,Shoichiro Matsuo,K. Saito,H. Nasu,Toshio Morioka +18 more
TL;DR: This work demonstrates 12-core × 3-mode dense SDM transmission over 527 km graded-index multi-core few-mode fiber without mode-dispersion management using low baud rate multi-carrier signal and frequency-domain equalization.
Journal ArticleDOI
1000-km 7-core fiber transmission of 10 x 96-Gb/s PDM-16QAM using Raman amplification with 6.5 W per fiber
Hidehiko Takara,Hirotaka Ono,Yoshiteru Abe,Hiroji Masuda,Katsuhiro Takenaga,Shoichiro Matsuo,Hirokazu Kubota,Kohki Shibahara,Takayuki Kobayashi,Yutaka Miaymoto +9 more
TL;DR: 7-core fiber transmission of 10 x 96-Gb/s PDM-16QAM signals over 1000-km using distributed Raman amplification (DRA) is demonstrated and the feasibility of high power multi-core Fiber transmission with per fiber power of 6.5 W is proved.
Proceedings ArticleDOI
1-Pb/s (32 SDM/46 WDM/768 Gb/s) C-band dense SDM transmission over 205.6-km of single-mode heterogeneous multi-core fiber using 96-Gbaud PDM-16QAM channels
Takayuki Kobayashi,Masanori Nakamura,Fukutaro Hamaoka,Kohki Shibahara,Takayuki Mizuno,Akihide Sano,Hiroto Kawakami,Isoda Akira,Munehiko Nagatani,Hiroshi Yamazaki,Yutaka Miyamoto,Yoshimichi Amma,Yusuke Sasaki,Katsuhiro Takenaga,Kazuhiko Aikawa,Kunimasa Saitoh,Yongmin Jung,David J. Richardson,Klaus Pulverer,Marc Bohn,Md. Nooruzzaman,Toshio Morioka +21 more
TL;DR: It is demonstrated that 96-Gbaud LDPC-coded PDM-16QAM channels with FEC redundancy of 12.75% realize high-aggregate spectral efficiency of 217.6 b/s/Hz.
Proceedings ArticleDOI
32-core Dense SDM unidirectional transmission of PDM-16QAM signals over 1600 km using crosstalk-managed single-mode heterogeneous multicore transmission line
Takayuki Mizuno,Kohki Shibahara,Hirotaka Ono,Yoshiteru Abe,Yutaka Miyamoto,Feihong Ye,Toshio Morioka,Yusuke Sasaki,Yoshimichi Amma,Katsuhiro Takenaga,Shoichiro Matsuo,Kazuhiko Aikawa,Kunimasa Saitoh,Yongmin Jung,David J. Richardson,Klaus Pulverer,Marc Bohn,Makoto Yamada +17 more
TL;DR: 32-core dense space-division multiplexed (DSDM) unidirectional transmission of PDM-16QAM 20-WDM signals over 1644.8 km employing a low-crosstalk single-mode heterogeneous 32-core fiber in a partial recirculating-loop system is demonstrated.