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Shigefumi Yamasaki

Fujikura

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Publication

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optical fiber communication conference | 1998

Ultralow PDL WDM fiber couplers for WDM transmission systems

Shigefumi Yamasaki; H. Sasaki; Kenji Nishide; F. Suzuki; Akira Wada; Ryozo Yamauchi

Summary form only given. We have presented the polarization-swapping method as a polarisation dependent loss (PDL) reducing technique for fused taper fiber couplers. The manufactured 1.48/1.55 /spl mu/m WDM fiber couplers have shown a small PDL of one tenth of that of conventional couplers. This technique is very useful to reduce the PDL of WDM fiber couplers for EDFAs in WDM fibre transmission systems.

Tenth International Conference on Optical Fibre Sensors | 1994

Polarization-maintaining fused taper fiber couplers using twin-peak core fibers

M. Watanabe; Kuniharu Himeno; Shigefumi Yamasaki; Fumio Suzuki; Ryozo Yamauchi

Polarization-maintaining(PM) couplers are essential components in coherent optical communication and fiber sensor systems. The devices are required to have high performance and low-cost. Polished type PM couplers with PANDA fibers ,for example,which show low polarization crosstalk were reported so far [1].

Archive | 1994

Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler

Ryozo Yamauchi; Kuniharu Himeno; Minoru Sawada; Fumio Suzuki; Kazuhiko Aikawa; Tetsuo Nozawa; Shigefumi Yamasaki

Archive | 1998

Optical fiber grating and manufacturing method therefor

Ryozo Yamauchi; Akira Wada; Tetsuya Sakai; Nobuyuki Tanaka; Kensuke Shima; Kenji Nishide; Shigefumi Yamasaki

Archive | 2001

Optical fiber grating and manufacturing method thereof

Ryozo Yamauchi; Akira Wada; Tetsuya Sakai; Nobuyuki Tanaka; Kensuke Shima; Kenji Nishide; Shigefumi Yamasaki

Archive | 2000

Method of manufacturing polarization-maintaining optical fiber coupler

Hideki Sasaki; Ryozo Yamauchi; Hiroshi Hidaka; Kenji Nishide; Shigefumi Yamasaki; Ryokichi Matsumoto; Yoji Suzuki

Archive | 2000

Multiple wavelength excitation optical multiplexing device, multiple wavelength excitation light source incorporating aforementioned device, and optical amplifier

Ryozo Yamauchi; Akira Wada; Kenji Nishide; Shigefumi Yamasaki

Archive | 2000

Polarization-maintaining optical fiber and polarization-maintaining optical fiber component

Ryokichi Matsumoto; Hideki Sasaki; Kenji Nishide; Ryozo Yamauchi; Shigefumi Yamasaki

Archive | 1997

Optical-fiber coupler and manufacturing process therefor

Tomio Abiru; Hideki Sasaki; Fumio Suzuki; Shigefumi Yamasaki; Ryozo Yamauchi

optical fiber communication conference | 1993

Novel optical-fiber-coupler fabrication technique using multicore fibers

Kuniharu Himeno; M. Sawada; Shigefumi Yamasaki; Noboru Kawakami; Ryozo Yamauchi

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Ryozo Yamauchi

Fujikura

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Kenji Nishide

Fujikura

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Akira Wada

Fujikura

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Fumio Suzuki

Fujikura

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Hideki Sasaki

Fujikura

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Kensuke Shima

Fujikura

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Nobuyuki Tanaka

Fujikura

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Tetsuya Sakai

Fujikura

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Kuniharu Himeno

Fujikura

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Ryokichi Matsumoto

Fujikura

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