T
Takahiko Shindo
Researcher at Nippon Telegraph and Telephone
Publications - 105
Citations - 482
Takahiko Shindo is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Laser & Distributed feedback laser. The author has an hindex of 11, co-authored 86 publications receiving 377 citations. Previous affiliations of Takahiko Shindo include Tokyo Institute of Technology.
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Journal ArticleDOI
GaInAsP/InP lateral-current-injection distributed feedback laser with a-Si surface grating
Takahiko Shindo,Tadashi Okumura,Hitomi Ito,Takayuki Koguchi,Daisuke Takahashi,Yuki Atsumi,JoonHyun Kang,Ryo Osabe,Tomohiro Amemiya,Nobuhiko Nishiyama,Shigehisa Arai +10 more
TL;DR: A novel lateral-current-injection-type distributed feedback (DFB) laser with amorphous-Si (a-Si) surface grating with high efficiency and low threshold current is fabricated as a step to realize membrane lasers.
Journal ArticleDOI
High Power and High Speed SOA Assisted Extended Reach EADFB Laser (AXEL) for 53-Gbaud PAM4 Fiber-Amplifier-Less 60-km Optical Link
Takahiko Shindo,Naoki Fujiwara,Shigeru Kanazawa,Masahiro Nada,Yasuhiko Nakanishi,Toshihide Yoshimatsu,Atsushi Kanda,Mingchen Chen,Yoshitaka Ohiso,Kimikazu Sano,Hideaki Matsuzaki +10 more
TL;DR: In this paper, an O-band wavelength range (1260-1360nm) SOA assisted extended reach EADFB laser (AXEL) with a 300μm-long DFB laser and 85μmlong SOA was used to extend a 100 Gbit/s/λ fiber-amplifierless optical link with a simple and cost-effective transmission system.
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Nonunity permeability in metamaterial-based GaInAsP/InP multimode interferometers
Tomohiro Amemiya,Takahiko Shindo,Daisuke Takahashi,Seiji Myoga,Nobuhiko Nishiyama,Shigehisa Arai +5 more
TL;DR: An InP-based optical multimode interferometer (MMI) combined with metamaterials consisting of minute split-ring resonators (SRRs) arrayed on the MMI shows that it is possible to use new materials with nonunity permeability to construct semiconductor-based photonic devices.
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Lateral-Current-Injection Distributed Feedback Laser With Surface Grating Structure
Takahiko Shindo,Tadashi Okumura,Hitomi Ito,Takayuki Koguchi,Daisuke Takahashi,Yuki Atsumi,JoonHyun Kang,Ryo Osabe,Tomohiro Amemiya,Nobuhiko Nishiyama,Shigehisa Arai +10 more
TL;DR: In this article, the surface grating structure formed on an amorphous-Si (a-Si) layer deposited on the GaInAsP/InP initial wafer containing five quantum wells was designed to have a high index-coupling coefficient together with high optical confinement in the quantum wells.
Journal ArticleDOI
High Modulated Output Power Over 9.0 dBm With 1570-nm Wavelength SOA Assisted Extended Reach EADFB Laser (AXEL)
Takahiko Shindo,Wataru Kobayashi,Naoki Fujiwara,Yoshitaka Ohiso,Koichi Hasebe,Hiroyuki Ishii,Mikitaka Itoh +6 more
TL;DR: In this article, a 1570-nm (L-band) wavelength semiconductor optical amplifier (SOA) assisted extended reach electroabsorption-modulater integrated with a distributed feedback (EADFB) laser (AXEL) for a high modulated light output power (P avg) of more than 9.0 dBm was achieved.