Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Koji Ebihara"'
Autor:
Takuya Okimoto, Yusuke Ohkura, Satoru Okamoto, Kazuhiko Horino, Munetaka Kurokawa, Kouichiro Yamazaki, Yoshihiro Yoneda, Mitsuru Ekawa, Masaru Takechi, Hideki Yagi, Koji Ebihara
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 28:1-7
This paper reports on the performance of an InP-based butt-joint (BJ) coupled waveguide photodiode (PD) for 100 GBaud coherent detection. We adopt a dual-layer absorber comprised of p- and i-type GaInAs absorption layers to enhance the advantage of B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b9408081363c3c00784b9699e5bb05b
https://doi.org/10.1109/jstqe.2021.3108785
https://doi.org/10.1109/jstqe.2021.3108785
Autor:
Takuya Okimoto, Hideki Yagi, Ken Ashizawa, Kouichiro Yamazaki, Koji Ebihara, Satoru Okamoto, Kazuhiko Horino, Munetaka Kurokawa, Yoshiyuki Sugimoto, Seiji Kumagai, null Tanaka, Masaru Takechi, Mitsuru Ekawa, Yoshihiro Yoneda
Publikováno v:
2023 Optical Fiber Communications Conference and Exhibition (OFC).
An InP-based coherent receiver PIC with waveguide PDs demonstrates 80-GHz bandwidth and high responsivity of 0.156 A/W at a wavelength of 1.55 µm. A coherent receiver module with PICs and TIAs performs sufficient characteristics for 128-GBaud transm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf90d2a6004eec52dc4e2be7baf3439c
https://doi.org/10.23919/ofc49934.2023.10117325
https://doi.org/10.23919/ofc49934.2023.10117325
Autor:
Takuya Okimoto, Ken Ashizawa, Hiroki Mori, Koji Ebihara, Kouichiro Yamazaki, Satoru Okamoto, Kazuhiko Horino, Yusuke Ohkura, Hideki Yagi, Mitsuru Ekawa, Yoshihiro Yoneda
Publikováno v:
Optical Fiber Communication Conference (OFC) 2022.
A waveguide AlInAs/GaInAs APD with the butt-joint coupling structure for 106-Gb/s PAM4 applications is demonstrated for the first time. A maximum 3-dB bandwidth of 38 GHz and high responsivity at unity gain of 0.90 A/W are exhibited at 1.55 μm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8e27b3e0c3e20b2be438be918347f09
https://doi.org/10.1364/ofc.2022.w3d.2
https://doi.org/10.1364/ofc.2022.w3d.2
Autor:
Naoko Inoue, Hideki Yagi, Tatsuya Takeuchi, Takuya Okimoto, Munetaka Kurokawa, Y. Nishimoto, Kazuhiko Horino, Yasuo Yamasaki, Masaru Takechi, Mitsuru Ekawa, Koji Ebihara, Yoshihiro Yoneda, Satoru Okamoto, Kenji Sakurai, Kouichiro Yamazaki
Publikováno v:
IEICE Transactions on Electronics. :347-356
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddb5be8449fda8c3bbeb4b3679d6a9fd
https://doi.org/10.1587/transele.2018odi0006
https://doi.org/10.1587/transele.2018odi0006
Autor:
Satoru Okamoto, Yoshihiro Yoneda, Kouichiro Yamazaki, Takuya Okimoto, Kazuhiko Horino, Yusuke Ohkura, Hideki Yagi, Ken Ashizawa, Mitsuru Ekawa, Koji Ebihara
Publikováno v:
OFC
InP-based PICs with waveguide p-i-n PDs for 100 GBaud coherent receivers are demonstrated. The wide 3-dB bandwidth of more than 65 GHz and high responsivity of 0.154 A/W are revealed at a wavelength of 1.55 μm. We successfully achieve the monolithic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f512bc7725cb1afc394cb4ade8c8fd
https://doi.org/10.1364/ofc.2021.f2c.6
https://doi.org/10.1364/ofc.2021.f2c.6
Autor:
Kazuhiko Horino, Hideki Yagi, Yoshihiro Yoneda, Koji Ebihara, Tatsuya Takeuchi, T. Uchida, Takuya Okimoto, Takumi Endo, Satoru Okamoto, Ken Ashizawa
Publikováno v:
OFC
InP-based 8-channel waveguide APD arrays were demonstrated towards 400 GbE for the first time. They exhibited maximum 3-dB bandwidth of 23 GHz under high-optical input of −10 dBm and uniformity of avalanche breakdown voltage less than 0.1 V between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a3c0548b1497f6c8e4d15a733009ecf
https://doi.org/10.1364/ofc.2020.th3c.2
https://doi.org/10.1364/ofc.2020.th3c.2
Autor:
Jörg Wiedmann, Bo Chen, Jong-In Shim, Shigeo Tamura, Hyo-Chang Kim, Shigehisa Arai, Masataka Ohta, Koji Ebihara
Publikováno v:
Japanese Journal of Applied Physics. 40:6845
Deep-etching technology, which is a very simple fabrication process and requires only one lithography and one etching step without any regrowth, is applied to realize 1.5–1.55 µm wavelength GaInAsP/InP vertical grating (VG) distributed reflector (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31196e6db06ad06aa5dc7cc0a47715fb
https://doi.org/10.1143/jjap.40.6845
https://doi.org/10.1143/jjap.40.6845
Publikováno v:
Japanese Journal of Applied Physics. 40:4031
Single-mode GaInAsP lasers at a wavelength of 1.5 µm, fabricated using deep dry-etching technology are presented. In the novel design, the high reflectivity of a fifteen-element distributed Bragg reflector (DBR) is combined with the spectral selecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50dc8bf42f65fb296f049a81aa50db85
https://doi.org/10.1143/jjap.40.4031
https://doi.org/10.1143/jjap.40.4031
Publikováno v:
Japanese Journal of Applied Physics. 40:2269
Fabrication techniques of high-reflectivity deeply etched semiconductor/benzocyclobutene (BCB) Bragg reflectors by multiple sequential steps of CH4/H2 reactive ion etching (RIE) and O2 plasma ashing are presented. 1.55-µm-wavelength GaInAsP/InP lase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7a07ce47d4b182f0a016c09a839095b
https://doi.org/10.1143/jjap.40.2269
https://doi.org/10.1143/jjap.40.2269
Publikováno v:
Japanese Journal of Applied Physics. 39:L1297
The lasing performance of deeply etched distributed Bragg reflector (DBR) lasers was improved to a threshold current as low as 7.2 mA and a differential quantum efficiency as high as 50% with high uniformity. The reflectivity of the 15-DBR reflector
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75180a4322869a914b1af788a37ebd33
https://doi.org/10.1143/jjap.39.l1297
https://doi.org/10.1143/jjap.39.l1297