Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Suguru Akiyama"'
Autor:
Takeshi Matsumoto, Shigeaki Sekiguchi, Keijiro Suzuki, Kazumasa Takabayashi, Hitoshi Kawashima, Kazuhiro Ikeda, Suguru Akiyama, Hiroyuki Matsuura, Teruo Kurahashi, Ayahito Uetake, Ryotaro Konoike, Shu Namiki
Publikováno v:
Journal of Lightwave Technology. 38:2930-2937
In order to support continuous growth of global IP traffic, highly energy-efficient networks are demanded. One of the key components is an optical multicast switch which has large bandwidth with small power consumption. When using multicast switches,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03bb7e5d50f9db1b3ee7ee8588afbdea
https://doi.org/10.1109/jlt.2020.2982191
https://doi.org/10.1109/jlt.2020.2982191
Autor:
Ayahito Uetake, Teruo Kurahashi, Kazuhiro Ikeda, Takeshi Matsumoto, Keijiro Suzuki, Suguru Akiyama, Kazumasa Takabayashi, Ken Tanizawa, Shigeaki Sekiguchi, Ryotaro Konoike, Hitoshi Kawashima
Publikováno v:
Journal of Lightwave Technology. 37:307-313
A precise flip-chip bonding (FCB) technology for indium phosphide semiconductor optical amplifiers (InP-SOAs) on a silicon photonics platform within less than ±1- μ m alignment accuracy was developed. For efficient optical coupling and a relaxed al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51507c5fe9865ba3158f620c75b0794a
https://doi.org/10.1109/jlt.2018.2870128
https://doi.org/10.1109/jlt.2018.2870128
Autor:
Takeshi Matsumoto, Keijiro Suzuki, Teruo Kurahashi, Kazumasa Takabayashi, Takashi Inoue, Hitoshi Kawashima, Shu Namiki, Suguru Akiyama, Kazuhiro Ikeda, Ayahito Uetake, Shigeaki Sekiguchi, Ryotaro Konoike
Publikováno v:
Journal of Lightwave Technology. 37:123-130
We experimentally demonstrate the lossless transmission of wavelength division multiplexing (WDM) signals through a silicon-photonics 4 × 4 switch with a flip-chip bonded 4-channel semiconductor optical amplifier (SOA). We first optimized the input
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e44c8f1ef21a06c3d3fc1c8c1c38df89
https://doi.org/10.1109/jlt.2018.2868084
https://doi.org/10.1109/jlt.2018.2868084
Autor:
Kazuhiro Ikeda, Teruo Kurahashi, Hitoshi Kawashima, Takeshi Matsumoto, Ayahito Uetake, Keijiro Suzuki, Hiroyuki Matsuura, Kazumasa Takabayashi, Shigeaki Sekiguchi, Ryotaro Konoike, Suguru Akiyama
Publikováno v:
45th European Conference on Optical Communication (ECOC 2019).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24efba2b30c027213e70061e10845e38
https://doi.org/10.1049/cp.2019.0770
https://doi.org/10.1049/cp.2019.0770
Autor:
Takuya Nakao, Suguru Akiyama, Ayahito Uetake, Yusuke Kurihara, Shinsuke Tanaka, Ken Morito, Nami Yasuoka, Teruo Kurahashi
Publikováno v:
ECOC
We fabricated waveguide germanium photodetectors (Ge-PDs) using silicon photonics technology at a commercial CMOS foundry. The fabricated Ge-PDs exhibited low dark current, high responsivity (1.1 A/W) and 40-GHz O/E response with TIA up to high input
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::597b0ebd9e3b0997c78f078d5f528db5
https://doi.org/10.1109/ecoc.2018.8535465
https://doi.org/10.1109/ecoc.2018.8535465
Autor:
Kazuhiro Ikeda, Keijiro Suzuki, Ken Tanizawa, Teruo Kurahashi, Suguru Akiyama, Hitoshi Kawashima, Shigeaki Sekiguchi, Ryotaro Konoike, Kazumasa Takabayashi, Takeshi Matsumoto, Ayahito Uetake
Publikováno v:
OFC
Scopus-Elsevier
Scopus-Elsevier
We review the hybrid-integration of an InP semiconductor optical amplifier on a silicon photonics chip, and our in-line SOA integration using precise flip-chip bonding technology. We demonstrate the loss-less operation of a 4×4 switch with a 4ch-SOA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9ec0f2f96b6685596a1c502af03ba13
https://doi.org/10.1364/ofc.2018.tu2a.4
https://doi.org/10.1364/ofc.2018.tu2a.4
Autor:
Tsuyoshi Horikawa, Keiji Koshino, Miyoshi Seki, Naoki Hirayama, Suguru Akiyama, Yoshiji Noguchi, Munehiro Toyama, Takeshi Akagawa, Tatsuya Usuki, Takeshi Baba, Masahiko Imai
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 19:74-84
We developed PIN-diode-based silicon Mach-Zehnder modulators, which have side-wall-gratings in the phase-shifter sections. Such passive waveguides with gratings were fabricated using ArF immersion lithography, which showed a small scattering loss of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de6c0670fecbefee0aa5c4b933465065
https://doi.org/10.1109/jstqe.2013.2278438
https://doi.org/10.1109/jstqe.2013.2278438
Autor:
Junichi Fujikata, Tsuyoshi Horikawa, Keizo Kinoshita, Tohru Mogami, Takeshi Baba, Suguru Akiyama, Shigekazu Okumura
Publikováno v:
2016 IEEE Silicon Nanoelectronics Workshop (SNW).
An advanced silicon photonics process platform has been developed for low-power photonic IC's. Key techniques are highly reproducible optical devices using the advanced CMOS process and high-quality selective epitaxial growth Ge for photodetectors. F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9d979f4f9ad95b7aca645c946af0b15
https://doi.org/10.1109/snw.2016.7578057
https://doi.org/10.1109/snw.2016.7578057
Publikováno v:
Optics express. 23(26)
We investigated the broadband operations of a silicon Mach-Zehnder modulator (MZM) based on a forward-biased-PIN diode. The phase shifter was integrated with a passive-circuit equalizer to compensate for the narrowband characteristics of the diodes,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1aab9b546c0867afedfe751ebf35c10
https://pubmed.ncbi.nlm.nih.gov/26831962
https://pubmed.ncbi.nlm.nih.gov/26831962
Autor:
Suguru Akiyama, Shintaro Nomura
Publikováno v:
Optics Express. 20(20):21847-21859
We investigated the dynamic response of a cascaded-ring-resonator-loaded Mach-Zehnder modulator (CRR-MZM), in which a number of cascaded ring resonators (RRs) are loaded in the interferometer as phase modulators. The analytical form is derived for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f19247dae9568f3694a54e708a5dcac
https://tsukuba.repo.nii.ac.jp/records/27804
https://tsukuba.repo.nii.ac.jp/records/27804