Utilization of a dispersion-shifted fiber for simultaneous measurement of distributed strain and temperature through Brillouin frequency shift

被引：92
|
作者：
Lee, CC [1 ]
Chiang, PW [1 ]
Chi, S [1 ]
机构：
[1] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2001年 / 13卷 / 10期
关键词：
BOTDR; Brillouin frequency shift; dispersion-shifted fiber;
D O I：
10.1109/68.950746
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：
In this letter, we propose and realize a new method that utilizes a dispersion-shifted fiber having compound compositions with different temperature coefficients in core to simultaneously measure the distributed strain and temperature based on Brillouin frequency shift. In a 3682-m sensing length of large-effective-area nonzero dispersion-shifted fiber, a temperature resolution of 5 degreesC, a strain resolution of 60 mu epsilon, and a spatial resolution of 2 in are achieved simultaneously.
引用
收藏
页码：1094 / 1096
页数：3
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