Presentation	2004/5/14 Distributed strain measurement of GI fibers by using BOTDR Yoshiyuki Sakairi, Yahei Koyamada,
PDF Download Page	PDF download Page Link
Abstract(in Japanese)	(See Japanese page)
Abstract(in English)	Brillouin scattered lights from graded index (GI) fibers have been measured by using a BOTDR which was designed for single mode (SM) fibers. The dependence of Brillouin frequency shift on the strain and temperature was obtained. It was made clear that the measured Brillouin spectra in GI fibers were due to lower order acoustic modes. The strain measurement accuracy and spatial resolution of BOTDR for GI fibers are the same as those for SM fibers. We demonstrate the performance of a strain and temperature sensing system using a BOTDR and a ROTDR. Distributed strain in GI fibers was successfully measured without the influence of temperature variation along the length of a fiber.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	Brillouin scattering / optical fiber sensor / strain / temperature / distributed sensor
Paper #	OFT2004-9
Date of Issue

Conference Information
Committee	OFT
Conference Date	2004/5/14(1days)
Place (in Japanese)	(See Japanese page)
Place (in English)
Topics (in Japanese)	(See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

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)	Distributed strain measurement of GI fibers by using BOTDR
Sub Title (in English)
Keyword(1)	Brillouin scattering
Keyword(2)	optical fiber sensor
Keyword(3)	strain
Keyword(4)	temperature
Keyword(5)	distributed sensor
1st Author's Name	Yoshiyuki Sakairi
1st Author's Affiliation	Ibaraki University()
2nd Author's Name	Yahei Koyamada
2nd Author's Affiliation	Ibaraki University
Date	2004/5/14
Paper #	OFT2004-9
Volume (vol)	vol.104
Number (no)	65
Page	pp.pp.-
#Pages	6
Date of Issue