Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Masayuki Shigematsu"'
Autor:
Mitsuaki Nishie, Moriyasu Ichino, Atsushi Miki, Ichiro Tonai, Masayuki Shigematsu, Toshio Mizue, Hirotaka Oomori
Publikováno v:
IEEE Transactions on Components, Packaging and Manufacturing Technology. 1:1147-1153
The world's smallest distributed-feedback laser modules using the miniature thermoelectric cooler (TEC) has been developed. By the virtue of reducing the heat load of the built-in TEC, the module has been successfully downsized to $\phi 5.6\times 12.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e6304d8fb3d17e3c8265a9195f1253d
https://doi.org/10.1109/tcpmt.2011.2157970
https://doi.org/10.1109/tcpmt.2011.2157970
Autor:
Toshiaki Okuno, Masaaki Hirano, T. Tsuzaki, Masayuki Shigematsu, Toshiyuki Miyamoto, J. Kobayashi, M. Kakui, M. Tanaka
Publikováno v:
Journal of Lightwave Technology. 23:3475-3483
The highly nonlinear fiber (HNLF)-based lumped fiber Raman amplifiers (LRAs) for four- and eight-channel coarse wavelength division multiplexing (CWDM) transmission systems have been investigated. By using the developed LRA, the four-channel CWDM tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f857c259a3c93b6c85a150b25b366d35
https://doi.org/10.1109/jlt.2005.857777
https://doi.org/10.1109/jlt.2005.857777
Publikováno v:
Optics Communications. 245:193-201
This paper presents S-band optical amplification using silica-based phosphorous (P)/alumina (Al)-codoped EDF. As a result of the glass composition examination, both the sufficiently high concentration of P and the slight concentration of Al have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f27a24ad687c25f2490eff679dad6e8a
https://doi.org/10.1016/j.optcom.2004.10.019
https://doi.org/10.1016/j.optcom.2004.10.019
Publikováno v:
Optics Communications. 221:87-98
This paper presents the unique behavior of thulium doped fiber amplifiers (TDFAs) under circumstantial changes in the multi-wavelength photonic networking systems, namely in the span loss, the channel count, and the environmental temperature. Unlike
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d5e18b31b939b9cbb740582d45cdee3
https://doi.org/10.1016/s0030-4018(03)01467-6
https://doi.org/10.1016/s0030-4018(03)01467-6
Publikováno v:
Optical Fiber Technology. 9:25-35
In order to realize superior high-speed automatic gain controlled erbium-doped fiber amplifiers (EDFAs), we have investigated gain dynamics in EDFAs pumped at 980 or 1480 nm when the input channel count is suddenly changed. It has been found that whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d47c1996e6174404d2fcebb11b1a26f
https://doi.org/10.1016/s1068-5200(02)00526-6
https://doi.org/10.1016/s1068-5200(02)00526-6
Autor:
Masayuki Shigematsu, Tomonori Kashiwada, Masayuki Nishimura, Koji Nakazato, Masashi Onishi, Motoki Kakui, Chie Fukuda
Publikováno v:
Optical Fiber Technology. 3:123-133
For realizing wavelength-division multiplexing (WDM) transmission systems, one of the most important devices is the erbium-doped fiber amplifier (EDFA), which exhibits a flat gain, a high pumping efficiency, and a low noise figure (NF). To meet these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b82f9f2fa075f31528c785801e335b9f
https://doi.org/10.1006/ofte.1997.0205
https://doi.org/10.1006/ofte.1997.0205
Autor:
Masayuki Shigematsu, Masashi Onishi, Motoki Kakui, Koji Nakazato, Tomonori Kashiwada, Masayuki Nishimura
Publikováno v:
The Review of Laser Engineering. 25:158-163
Erbium-doped fiber amplifier (EDFA) featuring a spectrally flattened gain is considered to be one of the most important key devices for the wavelength-division multiplexing (WDM) transmission systems. For this purpose, we have developed hybrid EDFs c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ca86f2cc06bbd7b8a4a4332483cae75
https://doi.org/10.2184/lsj.25.158
https://doi.org/10.2184/lsj.25.158
Autor:
Tomonori Kashiwada, Masayuki Nishimura, Masashi Onishi, Masayuki Shigematsu, Motoki Kakui, Hisao Go
Publikováno v:
Optical Fiber Technology. 2:195-200
We have proposed a novel configuration of erbium-doped fiber amplifier (EDFA) which realizes both a flat spectral gain and high output power for analog transmission. This EDFA uses hybrid EDF which consists of serially cascaded EDFs with different gl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::853a7f63a9aa3fed8bf9ccc6710a51a6
https://doi.org/10.1006/ofte.1996.0023
https://doi.org/10.1006/ofte.1996.0023
Autor:
Hiroo Kanamori, Tomonori Kashiwada, Masayuki Nishimura, Masayuki Shigematsu, Motoki Kakui, Masashi Onishi, Yasushi Koyano
Publikováno v:
Electronics and Communications in Japan (Part II: Electronics). 79:33-42
Accelerated tests of Er-doped fibers in hydrogen environments are carried out and as the evidence of their long-term utilization, the degradations in loss and gain are estimated. The hydrogen-induced loss-increase in Er-doped fibers with 0 to 3 perce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b771822e781a63d763617d3327ccdcad
https://doi.org/10.1002/ecjb.4420790104
https://doi.org/10.1002/ecjb.4420790104
Publikováno v:
Electronics and Communications in Japan (Part I: Communications). 76:1-11
An optical fiber amplifier for an optical amplitude-modulated vestigial sideband (AM-VSB) transmission system has been developed. Various pumping methods in an Er-doped optical fiber for a high-power and low-noise performance are discussed. The bidir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7895d6a945a219d22914411f8352de7
https://doi.org/10.1002/ecja.4410760501
https://doi.org/10.1002/ecja.4410760501