Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Kenichi Kasahara"'
Publikováno v:
Proceedings of the 5th World Congress on New Technologies.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6f831a5e51c6f765ba3f4392119359d
https://doi.org/10.11159/icnfa19.109
https://doi.org/10.11159/icnfa19.109
Publikováno v:
Journal of Lightwave Technology. 29:153-161
Waveguide avalanche photodiodes (WG-APDs) have been developed for a 25-Gb/s operation. The waveguide structure was adopted for the APDs in order to achieve both high-speed performance and high responsivity. First, the dependence of the multiplication
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b286ee54fdb4e559ec70e6fab7c0bfb6
https://doi.org/10.1109/jlt.2010.2096498
https://doi.org/10.1109/jlt.2010.2096498
Autor:
Naoki Kumazaki, Tadataka Edamura, Kenichi Kasahara, Atsushi Sugiyama, Yohei Takagi, Naota Akikusa, Mikito Ishihara
Publikováno v:
Japanese Journal of Applied Physics. 47:6320-6326
We report the experimental linewidth enhancement factor (α-factor) results on mid-infrared InGaAs/InAlAs quantum cascade lasers (QCLs) obtained using the self-mixing method. The waveforms appearing under self-mixing conditions were different from th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a15e15477a5b67bac7a2e2dd8b822e5
https://doi.org/10.1143/jjap.47.6320
https://doi.org/10.1143/jjap.47.6320
Publikováno v:
Electronics Letters. 49:407-409
Measured is the relative intensity noise (RIN) of a mid-infrared Peltier-cooled distributed-feedback (DFB) quantum cascade laser (QCL) with a feedback loop, where optical feedback parameters affecting the RIN were estimated by using the self-mixing m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abf4f798001c966a4bd7a1bf5cf17ea7
https://doi.org/10.1049/el.2013.0255
https://doi.org/10.1049/el.2013.0255
Publikováno v:
IEEE Photonics Technology Letters. 21:1852-1854
The excess noise and ionization coefficient ratio of InAlAs avalanche photodiodes (APDs) with heterojunctions has been measured. To obtain these values accurately, we used a differential amplifier and determined the optical current at which the avala
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f657e8006998da41f61f5dc0d6c020c0
https://doi.org/10.1109/lpt.2009.2032783
https://doi.org/10.1109/lpt.2009.2032783
Autor:
Naota Akikusa, Naoki Kumazaki, Tadataka Edamura, Mikito Ishihara, Yohei Takagi, Kenichi Kasahara
Publikováno v:
Japanese Journal of Applied Physics. 47:1606-1608
We investigated the linewidth enhancement factor α of a Fabry–Perot quantum cascade laser by self-mixing interferometry. For the first time, the theoretically predicted characteristic waveform resulting from a small α of about -0.3 could be obtai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5eb242c41abba8be9803de1b99b4d10
https://doi.org/10.1143/jjap.47.1606
https://doi.org/10.1143/jjap.47.1606
Autor:
Kenichi Kasahara, Kaori Kurihara, Hideo Kosaka, T. Kawakami, Takashi Yoshikawa, Mikihiro Kajita, Hideaki Saito, Yoshimasa Sugimoto
Publikováno v:
IEEE Journal of Quantum Electronics. 34:1009-1015
Relative intensity noise (RIN) in a vertical-cavity surface-emitting laser (VCSEL) was greatly reduced through the use of polarization control to eliminate competition between two orthogonal polarization states by ensuring there was only one polariza
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dab78f750462c3bfb24f027408e9af2
https://doi.org/10.1109/3.678597
https://doi.org/10.1109/3.678597
Autor:
Kenichi Kasahara, Achyut Kumar Dutta
Publikováno v:
Solid-State Electronics. 42:907-910
The polarization control in VCSELs is described and it is done applying uniaxial stress. The characteristic performances are compared with that of conventional VCSELs (without uniaxial stress), fabricated using the same process. The stress is applied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf00c14b412d9cb81033e9510240a83e
https://doi.org/10.1016/s0038-1101(98)00123-3
https://doi.org/10.1016/s0038-1101(98)00123-3
Publikováno v:
Journal of Lightwave Technology. 16:870-875
High-speed vertical cavity surface emitting laser (VCSEL) with 6/spl times/6 /spl mu/m active area is fabricated by reducing its pad area in order to reduce its parasitic capacitance. The fabricated VCSEL shows the 3 dB bandwidth of over 7 GHz and av
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::808fc3d7193bdbea8b19513b3ca308fa
https://doi.org/10.1109/50.669024
https://doi.org/10.1109/50.669024
Autor:
Kenichi Kasahara
Publikováno v:
Journal of Japan Institute of Electronics Packaging. 1:192-196
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7afb2b98fcc787b2a97e60953771c45c
https://doi.org/10.5104/jiep.1.192
https://doi.org/10.5104/jiep.1.192