Distributed fiber-optic sensor for dynamic strain measurement

被引：26

作者：

Chaube, Prabodh ^{[1
]}

Colpitts, Bruce G. ^{[2
]}

Jagannathan, Deepak ^{[2
]}

Brown, Anthony W. ^{[2
]}

机构：

[1] Weatherford Int, Prod Optimizat Opt Sensing Syst, Dubai, U Arab Emirates

[2] Univ New Brunswick, Dept Elect & Comp Engn, Fredericton, NB E3B 5A3, Canada

来源：

IEEE SENSORS JOURNAL | 2008年 / 8卷 / 7-8期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

Brillouin scattering; optical fiber transducers; strain measurement; temperature measurement;

D O I：

10.1109/JSEN.2008.926107

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel Brillouin-based distributed sensing technique is presented that can obtain the strain profile of the entire sensing fiber with a single optical pulse. Experimentally obtained spectra show that this comb excited pump signal is capable of strain and temperature measurement in a dynamic system. The results show the expected sinusoidal strain profile for a 12 s periodic strain cycle applied to the test fiber. The strain distribution for the entire fiber was obtained in 256 mu s, thereby demonstrating for the first time, the potential to measure dynamic strains up to 3.9 kHz with 12 m resolution. Increased acquisition speed comes at the expense of achievable spatial resolution.

引用

页码：1067 / 1072

页数：6

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