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Crystals 2012, 2(4), 1382-1392; doi:10.3390/cryst2041382

Optical Fiber for High-Power Optical Communication

NTT Access Network Service Systems Laboratories, 1-7-1 Hanabatake, Tsukuba 305-0805, Japan
Received: 27 July 2012 / Revised: 6 September 2012 / Accepted: 10 September 2012 / Published: 28 September 2012
(This article belongs to the Special Issue Current Trends in Application of Photonic Crystals)
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We examined optical fibers suitable for avoiding such problems as the fiber fuse phenomenon and failures at bends with a high power input. We found that the threshold power for fiber fuse propagation in photonic crystal fiber (PCF) and hole-assisted fiber (HAF) can exceed 18 W, which is more than 10 times that in conventional single-mode fiber (SMF). We considered this high threshold power in PCF and HAF to be caused by a jet of high temperature fluid penetrating the air holes. We showed examples of two kinds of failures at bends in conventional SMF when the input power was 9 W. We also observed the generation of a fiber fuse under a condition that caused a bend-loss induced failure. We showed that one solution for the failures at bends is to use optical fibers with a low bending loss such as PCF and HAF. Therefore, we consider PCF and HAF to be attractive solutions to the problems of the fiber fuse phenomenon and failures at bends with a high power input. View Full-Text
Keywords: photonic crystal fiber; hole-assisted fiber; fiber fuse; high-power photonic crystal fiber; hole-assisted fiber; fiber fuse; high-power

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Kurokawa, K. Optical Fiber for High-Power Optical Communication. Crystals 2012, 2, 1382-1392.

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