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Akihiko Shinya
Researcher at Nippon Telegraph and Telephone
Publications - 231
Citations - 9074
Akihiko Shinya is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Photonic crystal & Photonic integrated circuit. The author has an hindex of 39, co-authored 216 publications receiving 8354 citations.
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Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal Slabs
TL;DR: Waveguiding characteristics and group-velocity dispersion of line defects in photonic crystal slabs as a function of defect widths reveal that they can be tuned by controlling the defect width, and the results agree well with theoretical calculations, indicating that light paths with made-to-order dispersion can be designed.
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Sub-femtojoule all-optical switching using a photonic-crystal nanocavity
Kengo Nozaki,Takasumi Tanabe,Akihiko Shinya,Shinji Matsuo,Tomonari Sato,Hideaki Taniyama,Masaya Notomi +6 more
TL;DR: In this article, a combination of an ultrasmall photonic-crystal nanocavity and strong carrier-induced nonlinearity in InGaAsP was used to demonstrate low-energy switching within a few tens of picoseconds.
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Ultrahigh-Q photonic crystal nanocavities realized by the local width modulation of a line defect
Eiichi Kuramochi,Masaya Notomi,Satoshi Mitsugi,Akihiko Shinya,Takasumi Tanabe,Toshifumi Watanabe +5 more
TL;DR: In this article, the authors proposed an ultrahigh quality factor (Q) photonic crystal slab nanocavity created by the local width modulation of a line defect, which has an intrinsic Q value of up to 7×107.
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Optical bistable switching action of Si high-Q photonic-crystal nanocavities
TL;DR: All-optical bistable switching operation of resonant-tunnelling devices with ultra-small high-Q Si photonic-crystal nanocavities with potentials to function as various signal processing functions in photonic andcrystal-based optical-circuits are demonstrated.
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Waveguides, resonators and their coupled elements in photonic crystal slabs.
TL;DR: The design, fabrication, and measurement of photonic-band-gap waveguides, resonators and their coupled elements in two-dimensional photonic crystal (PhC) slabs have been investigated and a large group delay is observed by time-domain measurement.