Distributed fiber strain sensor with 1-kHz sampling rate based on Brillouin optical correlation domain analysis

被引：81

作者：

Song, Kwang Yong ^{[1
]}

Hotate, Kazuo ^{[1
]}

机构：

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

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 21-24期

关键词：

Brillouin scattering; correlation; distributed detection; modulation; nonlinear optics; optical fiber measurements;

D O I：

10.1109/LPT.2007.908772

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：

We report the highest speed distributed sensing of dynamic strain based on stimulated Brillouin scattering in optical fibers. A sampling rate of 1 kHz, more than an order of magnitude higher than the former best result, is achieved by applying a simplified Brillouin optical correlation domain analysis with optimized time gates and an unbalanced Mach-Zehnder delay line. In experiments, we present the measurement of various dynamic strains at the maximum frequency of 200 Hz with 10-cm spatial resolution and 20-m measurement range.

引用

页码：1928 / 1930

页数：3

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