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
收藏
页码：1928 / 1930
页数：3
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