Distributed dynamic strain measurement using a correlation-based brillouin sensing system

被引：80

作者：

Hotate, K ^{[1
]}

Ong, SSL ^{[1
]}

机构：

[1] Univ Tokyo, Dept Elect Engn, Tokyo 1138656, Japan

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2003年 / 15卷 / 02期

关键词：

correlation peak; distributed-fiber sensor; dynamic strain; stimulated Brillouin scattering (SBS);

D O I：

10.1109/LPT.2002.806107

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：

Conventional fiber Brillouin-based strain sensors are capable of distributed sensing, making them advantageous over fiber Bragg grating-based sensors for structural monitoring applications. However, Brillouin sensors have low spatial resolution and are inappropriate for dynamic strain measurements as they have large measurement times of several minutes. We present a correlation-based continuous-wave technique for high spatial resolution and distributed dynamic strain measurements using stimulated Brillouin scattering. Using our technique, we have successfully measured dynamic strain from a 5-cm vibrating section, at a sampling rate of 8.8 Hz with a strain accuracy of about +/-38 muepsilon.

引用

页码：272 / 274

页数：3

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