Identical broadband chirped grating interrogation technique for temperature and strain sensing

被引：48

作者：

Fallon, RW

Zhang, L

Gloag, A

Bennion, I

机构：

[1] Dept. Electron. Eng. and Appl. Phys., Aston University, Birmingham

来源：

ELECTRONICS LETTERS | 1997年 / 33卷 / 08期

关键词：

optical communications; fibre optic sensors;

D O I：

10.1049/el:19970486

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：

The authors propose a simple, low-cost technique for the interrogation of fibre Bragg grating (FBG) sensors. The induced mismatch between two identical broadband fibre chirped gratings is used to provide a mechanism for measuring changes in strain/temperature associated with one grating. A linear relationship with detected optical power is seen, with a 10nm chirp rate facilitating sensing ranges up to 9000 mu E and 750 degrees C for strain and temperature change, respectively.

引用

收藏

页码：705 / 707

页数：3

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