Presentation	2009-11-27 Proposal of fiber macrobending identification method Shiro RYU, Mikio YAGI,
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Abstract(in English)	Macrobending loss that occurs at a junction point of optical cables might become harmful to system operation since the loss increases in the long wavelength region for a small bending radius. Hence, it is very important to identify the location of the occurrence point of fiber macrobending. Conventionally, optical time domain reflectometry (OTDR) method with a single wavelength has been used to identify a high loss position. However, the conventional OTDR method is not necessarily sufficient to distinguish between a high splice loss point and a macrobending point. In this paper, we propose a novel identification method of a fiber macrobending point based on the OTDR measurement at two wavelengths, and report the experimental results to verify the methods.
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Keyword(in English)	Optical cable / optical fiber / macrobending / fault location / OTDR
Paper #	OCS2009-98,OFT2009-61
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Conference Information
Committee	OFT
Conference Date	2009/11/19(1days)
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Paper Information
Registration To	Optical Fiber Technology (OFT)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Proposal of fiber macrobending identification method
Sub Title (in English)
Keyword(1)	Optical cable
Keyword(2)	optical fiber
Keyword(3)	macrobending
Keyword(4)	fault location
Keyword(5)	OTDR
1st Author's Name	Shiro RYU
1st Author's Affiliation	SoftBank Telecom Corp.()
2nd Author's Name	Mikio YAGI
2nd Author's Affiliation	SoftBank Telecom Corp.
Date	2009-11-27
Paper #	OCS2009-98,OFT2009-61
Volume (vol)	vol.109
Number (no)	303
Page	pp.pp.-
#Pages	6
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