Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Jiro Hiroishi"'
Autor:
Masateru Tadakuma, Masanori Takahashi, Ryuichi Sugizaki, Takeshi Yagi, Misao Sakano, Yu Mimura, Jiro Hiroishi
Publikováno v:
Journal of Lightwave Technology. 25:2103-2107
Theoretical influences of reducing the cladding diameter for silica highly nonlinear fiber (HNLF) have been investigated by the finite-element method. Downsized HNLF with 56-mum cladding was fabricated, and certain reliability was confirmed through m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2419453288d534003eef2e4a3ceec0b
https://doi.org/10.1109/jlt.2007.899797
https://doi.org/10.1109/jlt.2007.899797
Autor:
Masanori Takahashi, Y. Taniguchi, Ryuichi Sugizaki, Masateru Tadakuma, Jiro Hiroishi, Takeshi Yagi
Publikováno v:
Journal of Lightwave Technology. 23:3615-3624
In recent technologies, various optical signal processing systems have been reported. In many of these applications, highly nonlinear fibers (HNLFs) are used as key parts. Especially, low loss and low dispersion slope are critical features of the HNL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b60b4f99836489d66361583697fdddf1
https://doi.org/10.1109/jlt.2005.857771
https://doi.org/10.1109/jlt.2005.857771
Autor:
Ryuichi Sugizaki, Masateru Tadakuma, Shigehiro Takasaka, Yuki Taniguchi, Jiro Hiroishi, Masanori Takahashi
Publikováno v:
2014 The European Conference on Optical Communication (ECOC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f936902219f323a9f85ed7b5d3374bb9
https://doi.org/10.1109/ecoc.2014.6964009
https://doi.org/10.1109/ecoc.2014.6964009
Autor:
Misao Sakano, Shigehiro Takasaka, Koji Igarashi, Ryuichi Sugizaki, Yasuyuki Ozeki, Jiro Hiroishi, Shu Namiki, Takashi Inoue
Publikováno v:
IEEE Photonics Technology Letters. 17:1698-1700
We show that an optical beat signal is almost exactly converted to a soliton train through the propagation along a fiber with a polynomial dispersion decreasing profile, which is numerically optimized through iterative calculation. In the experiment,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2220e0646e6e391c0657e47a13de86c5
https://doi.org/10.1109/lpt.2005.851915
https://doi.org/10.1109/lpt.2005.851915
Publikováno v:
Seikei-Kakou. 12:275-277
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe2b411008f8f3cb945372d21947fa35
https://doi.org/10.4325/seikeikakou.12.275
https://doi.org/10.4325/seikeikakou.12.275
Publikováno v:
Optical Fiber Communication Conference and National Fiber Optic Engineers Conference.
We demonstrated FWM wavelength conversion with maximum conversion efficiecy of 1.5dB using a single CW pump with no phase modulation by SBS-suppressed HNLF. Over 60nm of conversion bandwidth with over-0dB conversion efficiency was obtained.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::099b6813aaaf740842f0c0425ba21c0a
https://doi.org/10.1364/ofc.2009.owu1
https://doi.org/10.1364/ofc.2009.owu1
Publikováno v:
OECC/ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optical Fibre Technology.
We developed polarization-maintaining comb-like profiled fiber (CPF) for the first time. Extinction ratio of 20 dB was achieved in a whole length of fabricated 4-step CPF. 10 GHz repeating, 2.4 ps pulse train was successfully compressed to 0.9 ps.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24267fecf2673b8cc5727cbc322bc830
https://doi.org/10.1109/oeccacoft.2008.4610619
https://doi.org/10.1109/oeccacoft.2008.4610619
Publikováno v:
2008 34th European Conference on Optical Communication.
We demonstrated 8 dB SBS-suppression and a uniform dispersion simultaneously by down-sized dispersion-decreasing HNLF applying distributed strain. FWM wavelength conversion efficiency of -2 dB was achieved with single CW pumping.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db2d5411b670c31bfa90ea2d45b165b8
https://doi.org/10.1109/ecoc.2008.4729208
https://doi.org/10.1109/ecoc.2008.4729208
Publikováno v:
Optics letters. 32(11)
We propose and demonstrate generation of an in-phase optical pulse train from an optical beat signal. The proposed method is based on four-wave mixing occurring between the two continuous waves of the beat signal and on spectral filtering to shape th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db8ab735a41a081f4f1b63622fea1059
https://pubmed.ncbi.nlm.nih.gov/17546200
https://pubmed.ncbi.nlm.nih.gov/17546200
Autor:
Masanori Takahashi, R. Miyabe, Takeshi Yagi, N. Kumano, Yu Mimura, Takashi Inoue, Jiro Hiroishi, Misao Sakano
Publikováno v:
2007 Conference on Lasers and Electro-Optics (CLEO).
We review pulse compression technique based on "comb-like profiled fiber (CPF)", comprised of alternate concatenations of highly nonlinear fiber and anomalous-dispersion fiber. We show CPF has truly practical and flexible features for optical pulse c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da2ac0b164e8d78f6f09329a397e653a
https://doi.org/10.1109/cleo.2007.4452849
https://doi.org/10.1109/cleo.2007.4452849