A
Atsushi Watanabe
Researcher at Harvard University
Publications - 40
Citations - 1298
Atsushi Watanabe is an academic researcher from Harvard University. The author has contributed to research in topics: Optical path & Node (networking). The author has an hindex of 9, co-authored 40 publications receiving 1204 citations. Previous affiliations of Atsushi Watanabe include Nippon Telegraph and Telephone.
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Journal ArticleDOI
Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network [Topics in Optical Communications]
Masahiko Jinno,Bartlomiej Kozicki,Hidehiko Takara,Atsushi Watanabe,Yoshiaki Sone,Takafumi Tanaka,Akira Hirano +6 more
TL;DR: A concept of a novel adaptation scheme in SLICE called distance-adaptive spectrum resource allocation, which can save more than 45 percent of required spectrum resources for a 12-node ring network, is presented.
Journal ArticleDOI
Bandwidth Squeezed Restoration in Spectrum-Sliced Elastic Optical Path Networks (SLICE)
Yoshiaki Sone,Atsushi Watanabe,Wataru Imajuku,Yukio Tsukishima,Bartlomiej Kozicki,Hidehiko Takara,Masahiko Jinno +6 more
TL;DR: The proposed bandwidth squeezed restoration scheme takes advantage of elastic bandwidth variation in the optical paths of SLICE to enable spectrally efficient and highly survivable network recovery for best-effort traffic as well as bandwidth guaranteed traffic, while satisfying the service level specifications required from the client layer networks.
Proceedings ArticleDOI
Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment
TL;DR: A concept of spectrally-efficient optical networking with distance-adaptive spectral allocation by adjusting the number of modulation levels is presented and demonstrated by routing 40 Gb/s optical paths using short-reach, narrow-spectrum 16APSK and long-reach QPSK.
Proceedings ArticleDOI
Highly survivable restoration scheme employing optical bandwidth squeezing in spectrum-sliced elastic optical path (SLICE) network
Yoshiaki Sone,Atsushi Watanabe,Wataru Imajuku,Yukio Tsukishima,Bartlomiej Kozicki,Hidehiko Takara,Masahiko Jinno +6 more
TL;DR: In this paper, the authors proposed a novel restoration scheme in the spectrum-sliced elastic optical network, which achieves a high level of survivability for the traffic that is subject to the committed service profile.
Proceedings ArticleDOI
Distance-adaptive super-wavelength routing in elastic optical path network (SLICE) with optical OFDM
Hidehiko Takara,Bartlomiej Kozicki,Yoshiaki Sone,Takafumi Tanaka,Atsushi Watanabe,Akira Hirano,Kazushige Yonenaga,Masahiko Jinno +7 more
TL;DR: This work proposes a spectrally-efficient super-wavelength-path routing in SLICE by selecting a set of subcarrier numbers and modulation levels according to path distances, and demonstrates 420 Gb/s path routing using short-reach 14-subcarrier 8-APSK and long-reach 21-Subcarrier QPSK.