Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Kouji Nakahara"'
Autor:
Kazuki Suga, Kouji Nakahara, Shigenori Hayakawa, Masatoshi Arasawa, Ryu Washino, Takeshi Kitatani, Masatoshi Mitaki, Hironori Sakamoto, Shigehisa Tanaka
Publikováno v:
2022 28th International Semiconductor Laser Conference (ISLC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdcda6e4ff64374e3c4d9c0d68028e1a
https://doi.org/10.23919/islc52947.2022.9943488
https://doi.org/10.23919/islc52947.2022.9943488
Autor:
Shoko Yokokawa, Atsushi Nakamura, Shigetaka Hamada, Ryosuke Nakajima, Kaoru Okamoto, Masatoshi Arasawa, Kouji Nakahara, Shigehisa Tanaka
Publikováno v:
Optical Fiber Communication Conference (OFC) 2022.
We demonstrate the first SOA-integrated CW-DFB laser at 1.3 µm with kink-free and stable single-mode operation over 100 mW at up to 80 ºC. We also achieved reliable operation over 700 hours at 80 ºC.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6a6c768c0455441a35edd9a514f3756
https://doi.org/10.1364/ofc.2022.m4d.3
https://doi.org/10.1364/ofc.2022.m4d.3
Autor:
Shigehisa Tanaka, Tetsuya Nishida, Kouji Nakahara, Kaoru Okamoto, Shigenori Hayakawa, Yasushi Sakuma, Hironori Sakamoto, Ryu Washino, Masatoshi Mitaki, Kazuki Suga, Masatoshi Arasawa, Takeshi Kitatani
Publikováno v:
ECOC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71b9a68636bc74f1254bbbd6fdb5fb2a
https://doi.org/10.1109/ecoc52684.2021.9606099
https://doi.org/10.1109/ecoc52684.2021.9606099
Autor:
Shigehisa Tanaka, Hironori Sakamoto, Masatoshi Arasawa, Yasushi Sakuma, Ryu Washino, Kazuki Suga, Shigenori Hayakawa, Masatoshi Mitaki, Kaoru Okamoto, Takeshi Kitatani, Tetsuya Nishida, Kouji Nakahara
Publikováno v:
OFC
The importance of high relaxation oscillation frequency to obtain superior 106-Gb/s PAM-4 waveforms was revealed for SR-LBH lasers. In addition, clear 56-Gb/s NRZ eye openings were first demonstrated up to 85°C using SR-LBH laser.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7d35063039584f7b7d7138e1010badf
https://doi.org/10.1364/ofc.2020.t3c.2
https://doi.org/10.1364/ofc.2020.t3c.2
Autor:
Shigenori Hayakawa, Masatoshi Arasawa, Kazuki Suga, Hironori Sakamoto, Yasushi Sakuma, Kaoru Okamoto, Tetsuya Nishida, Masatoshi Mitaki, Ryu Washino, Kouji Nakahara, S. Tanaka, Takeshi Kitatani
Publikováno v:
45th European Conference on Optical Communication (ECOC 2019).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1bec521440247742ad0fc785032c459
https://doi.org/10.1049/cp.2019.1025
https://doi.org/10.1049/cp.2019.1025
Autor:
Nagai, Yutaka *, Kouji, Nakahara, Yoshifumi, Yoneyama, Katsuyasu, Kawano, Katsumi, Tanaka, Ryouhei, Nakata
Publikováno v:
In Journal of Physics and Chemistry of Solids 2004 65(11):1861-1870
Autor:
Koichiro Adachi, Shigehsa Tanaka, Akira Nakanishi, Takanori Suzuki, Tsukuru Ohtoshi, Aki Takei, K. Tamura, Kouji Nakahara, Kazuhisa Uomi, Kazuhiko Naoe
Publikováno v:
Journal of Lightwave Technology. 34:358-364
A cost-effective optical sub-assembly (OSA) for high-speed optical interconnections using lens-integrated surface-emitting lasers (LISELs) is demonstrated. Two concepts of the OSA, one based on a direct-modulation (DM)-LISEL and the other based on a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95fc4d7c8c9518f7ea7bfca1dfcb62ea
https://doi.org/10.1109/jlt.2015.2477501
https://doi.org/10.1109/jlt.2015.2477501
Publikováno v:
2018 IEEE CPMT Symposium Japan (ICSJ).
Growing volume of data transmission in data centers requires large capacity optical communication networks. High-speed optical devices and their packaging technology have become important not only in realizing high speed optical communication but als
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d56860a8c8dd5fa3153e98a419c52842
https://doi.org/10.1109/icsj.2018.8602955
https://doi.org/10.1109/icsj.2018.8602955
Publikováno v:
2018 IEEE International Semiconductor Laser Conference (ISLC).
The highest dynamic outer extinction ratio (9.7 dB) of 56-Gb/s PAM-4 waveform is firstly achieved by employing optical orthogonal polarization-multiplexing with 1.3-pm NRZ driven EA-DFB lasers. High extinction ratio of PAM-4 improves the received sen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db3e9d2e2a058e153177a61f6256c9a6
https://doi.org/10.1109/islc.2018.8516216
https://doi.org/10.1109/islc.2018.8516216
Autor:
Shigehisa Tanaka, K. Tamura, Takeshi Kitatani, Takayoshi Fukui, Riu Hirai, Kaoru Okamoto, Nobuhiko Kikuchi, Kouji Nakahara, Yasushi Sakuma
Publikováno v:
OFC
We firstly demonstrate incoherent multiplexing of two NRZ signals utilizing directly modulated lasers transmits 106-Gb/s/lane PAM-4 signals over 10 km without non-linear compensation. Skewless eye diagram of this method attained lower BERs than conve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0365d22870f64a8169d182a4cde57d83
https://doi.org/10.1364/ofc.2018.th3b.3
https://doi.org/10.1364/ofc.2018.th3b.3