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Satoshi Irino

The Furukawa Electric Co., Ltd.

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optical fiber communication conference | 2016

Lasing stability of high power 14xx-nm pump lasers for Raman amplifiers

Junji Yoshida; Taketsugu Sawamura; Masakazu Miura; Satoshi Irino; Hirokazu Itoh; Masaru Terada; Takahiro Okada; Hidaaki Hasegawa; Noriyuki Yokouchi

14xx-nm pump lasers with double fiber Bragg gratings (FBGs) for Raman amplifiers show superior stable characteristics such as the lasing wavelength and power fluctuation in time domain comparing with 14xx-nm pump lasers with single FBG.

optical fiber communication conference | 2015

2.8FITs of field reliability of 1480nm/14××-nm pump lasers

Junji Yoshida; Chihomi F. Hayamizu; Hirokazu Itoh; Masakazu Miura; Taketsugu Sawamura; Satoshi Irino; Tetsuya Takeuchi; Toshio Kimura; Naoki Tsukiji

Recent progress of high power and high reliable 1480nm/14××-nm pump lasers as FOL14** series of FITEL is reported. Field reliability was estimated for over one million shipments and failure mode was analyzed by returned products.

Optical Amplifiers and Their Applications (2002), paper OMB4 | 2002

Advantage of Inner-Grating-Multi-mode laser (iGMlaser)

Naoki Tsukiji; Naoki Hayamizu; Hitoshi Shimizu; Yutaka Ohki; Toshio Kimura; Satoshi Irino; Jiyunji Yoshida; Toru Fukushima; Shu Namiki

We demonstrated the advantage of inner-grating-multi-mode (iGM) lasers for suppressing Stimulated-Brillouin-scattering (SBS) in comparison with normal single-mode DFB lasers. We found that iGM laser with over 18 longitudinal-modes successfully reduces SBS down to Rayleigh-scattering level.

Archive | 2001