Presentation 2009-03-06
High-performance Brillouin distributed sensing using pulse compression technique
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) The spatial resolution of strain/temperature measurements using Brillouin scattering in an optical fiber is proportional to the pulse width of a pump laser light. However, because the phonon spectrum is broadened and the signal-to-noise ratio (SNR) decreases if the pulse width is narrowed to improve resolution, it degrades the measurement accuracy. In this report, we show that high spatial resolution with a long pulse can be realized by applying the pulse compression technique of high-resolution radar to the previously proposed pulse-prepump method and combining with a signal processing to cancel undesired components appeared in the spectrum. In principle, distributed measurement with an arbitrary resolution and an arbitrary SNR can be realized by the proposed method.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Brillouin scattering / distributed sensing / strain/temperature sensing / prepump method / pulse compression
Paper # OFT2008-91,OPE2008-191
Date of Issue

Conference Information
Committee OFT
Conference Date 2009/2/27(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Vice Chair

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) High-performance Brillouin distributed sensing using pulse compression technique
Sub Title (in English)
Keyword(1) Brillouin scattering
Keyword(2) distributed sensing
Keyword(3) strain/temperature sensing
Keyword(4) prepump method
Keyword(5) pulse compression
1st Author's Name Ken'ichi NISHIGUCHI
1st Author's Affiliation Frontier Research Center, Osaka University()
2nd Author's Name CHE-HSIEN LI
2nd Author's Affiliation Neubrex Co., Ltd.
3rd Author's Name Kinzo KISHIDA
3rd Author's Affiliation Neubrex Co., Ltd.
Date 2009-03-06
Paper # OFT2008-91,OPE2008-191
Volume (vol) vol.108
Number (no) 450
Page pp.pp.-
#Pages 6
Date of Issue