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Optical Engineering

Optical fiber distributed vibration sensing system using time-varying gain amplification method
Author(s): Zhengxian Zhou; Songlin Zhuang
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Paper Abstract

A time-varying gain amplification method is proposed and demonstrated in an optical fiber distributed vibration sensing system based on a phase-sensitive optical time-domain reflectometer. An acoustic optical modulator is adopted to generate narrow pulses, which are injected to the sensing fiber to generate Rayleigh backscattering light. The experimental results show that a 5-m spatial resolution and up to 44-km sensing range with 50-ns pulse width are achieved. The amplitude of vibrations is equal in three positions including 804, 20,054, and 43,455 m.

Paper Details

Date Published: 18 August 2014
PDF: 5 pages
Opt. Eng. 53(8) 086107 doi: 10.1117/1.OE.53.8.086107
Published in: Optical Engineering Volume 53, Issue 8
Show Author Affiliations
Zhengxian Zhou, Univ. of Shanghai for Science and Technology (China)
Anhui Normal Univ. (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)

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