Simultaneous measurement of absolute strain and differential strain based on fiber Bragg grating Fabry-Perot sensor

被引：13

作者：

Wang, Kuiru ^{[1
]}

Wang, Bo ^{[1
]}

Yan, Binbin ^{[1
]}

Sang, Xinzhu ^{[1
]}

Yuan, Jinhui ^{[1
]}

Peng, Gang-Ding ^{[2
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

来源：

OPTICS COMMUNICATIONS | 2013年 / 307卷

基金：

中国国家自然科学基金;

关键词：

Fiber Bragg grating Fabry Perot cavity (FBG-FP); Dual-parameter measurement; Strain sensor; Temperature sensor; Fourier transform;

D O I：

10.1016/j.optcom.2013.06.015

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a fiber Bragg grating Fabry Perot (FBG-FP) sensor using the fast Fourier transform (FFT) demodulation for measuring the absolute strain and differential strain simultaneously. The amplitude and phase characteristics of Fourier transform spectrum have been studied. The relation between the amplitude of Fourier spectrum and the differential strain has been presented. We fabricate the fiber grating FP cavity sensor, and carry out the experiment on the measurement of absolute strain and differential strain. Experimental results verify the demodulation method, and show that this sensor has a good accuracy in the scope of measurement. The demodulating method can expand the number of multiplexed sensors combining with wavelength division multiplexing and time division multiplexing. (C) 2013 Elsevier By. All rights reserved.

引用

页码：101 / 105

页数：5

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