SIMULTANEOUS MEASUREMENT OF STRAIN AND TEMPERATURE WITH POLARIZATION MAINTAINING FIBER BRAGG GRATING LOOP MIRROR

被引：6
|
作者：
Wang, Qi [1 ,2 ]
Xia, Ji [1 ]
Zhao, Yong [1 ,2 ]
Liu, Xu [1 ]
Wang, Peng [1 ]
Zhang, Ya-nan [1 ]
Sang, Chunheng [1 ]
Wang, Li [1 ]
机构：
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China
[2] Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Peoples R China
来源：
INSTRUMENTATION SCIENCE & TECHNOLOGY | 2014年 / 42卷 / 03期
基金：
中国博士后科学基金; 中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
polarization maintaining fiber bragg grating; stain; fiber optic sensor; temperature; fiber loop mirror; BIREFRINGENCE FIBER;
D O I：
10.1080/10739149.2013.865213
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel simultaneous method of strain and temperature measurement based on a polarization maintaining fiber Bragg grating loop mirror is proposed and demonstrated. The sensing head was composed of a fiber loop mirror and a section of fiber Bragg grating made of a polarization maintaining fiber. The Bragg wavelengths of the fiber grating in the polarization maintaining fiber were along slow and fast axis showing different sensitivities to strain and temperature with the interferometric peak wavelength of the fiber loop mirror. By monitoring the shifts of the Bragg wavelength and interferometric peak of the fiber loop mirror, with its temperature sensitivity of 0.1167nm/degrees C and strain sensitivity of 0.0093nm/mu epsilon, a temperature measurement resolution about 0.009 degrees C and a strain measurement resolution of 1.08 mu epsilon was achieved theoretically and experimentally.
引用
收藏
页码：298 / 307
页数：10
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