H
Hidetaka Nishi
Researcher at Nippon Telegraph and Telephone
Publications - 155
Citations - 1510
Hidetaka Nishi is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Silicon photonics & Photonics. The author has an hindex of 19, co-authored 144 publications receiving 1188 citations.
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Journal ArticleDOI
Monolithic Integration of Silicon-, Germanium-, and Silica-Based Optical Devices for Telecommunications Applications
Tai Tsuchizawa,Koji Yamada,Toshifumi Watanabe,Sungbong Park,Hidetaka Nishi,Rai Kou,Hiroyuki Shinojima,Seiichi Itabashi +7 more
TL;DR: In this paper, the authors integrated Si variable optical attenuators (VOAs) and germanium photodetectors (PDs) with a silica arrayed waveguide grating (AWG).
Journal ArticleDOI
High-performance silicon photonics technology for telecommunications applications.
Koji Yamada,Tai Tsuchizawa,Hidetaka Nishi,Rai Kou,Tatsurou Hiraki,Kotaro Takeda,Hiroshi Fukuda,Yasuhiko Ishikawa,Kazumi Wada,Tsuyoshi Yamamoto +9 more
TL;DR: ASi-Ge-silica monolithic integration platform is developed, on which compact Si-Ge–based modulators/detectors and silica-based high-performance wavelength filters are monolithically integrated.
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Directly modulated membrane lasers with 108 GHz bandwidth on a high-thermal-conductivity silicon carbide substrate
Suguru Yamaoka,Nikolaos-Panteleimon Diamantopoulos,Hidetaka Nishi,Ryo Nakao,Takuro Fujii,Koji Takeda,Tatsurou Hiraki,Takuma Tsurugaya,Shigeru Kanazawa,Hiromasa Tanobe,Takaaki Kakitsuka,Takaaki Kakitsuka,Tai Tsuchizawa,Fumio Koyama,Shinji Matsuo +14 more
TL;DR: In this paper, a membrane distributed reflector laser on a low-refractive-index and high-thermal-conductivity silicon carbide substrate was proposed to achieve a 42 GHz relaxation oscillation frequency.
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On the Complexity Reduction of the Second-Order Volterra Nonlinear Equalizer for IM/DD Systems
Nikolaos-Panteleimon Diamantopoulos,Hidetaka Nishi,Wataru Kobayashi,Koji Takeda,Takaaki Kakitsuka,Shinji Matsuo +5 more
TL;DR: A theoretical analysis on the Volterra nonlinear equalizer (VNLE) is provided, focusing on computational complexity aspects, which yields a simple reduced-complexity scheme for the second-order VNLE (R2-VNL) based on a performance-complexities tradeoff.
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Monolithic integration of a silica AWG and Ge photodiodes on Si photonic platform for one-chip WDM receiver
Hidetaka Nishi,Tai Tsuchizawa,Rai Kou,Hiroyuki Shinojima,Takashi Yamada,Hideaki Kimura,Yasuhiko Ishikawa,Kazumi Wada,Koji Yamada +8 more
TL;DR: The results show the promising potential of the Si photonic platform as a photonics-electronics convergence and mounts a multichannel transimpedance amplifier/limiting amplifier circuit on the fabricated AWG-PD device using flip-chip bonding technology.