Strain measurement using FBG Fabry-Perot sensor

被引：0
|
作者：
Liu Li [1 ,2 ]
Wu Zhaoxia [2 ]
Song Aijuan [2 ]
Yan Dongmei [1 ,2 ]
机构：
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang, Peoples R China
[2] Northeastern Univ, Dept Automat Engn, Qinhuangdao, Hebei, Peoples R China
来源：
SEVENTH INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION AND CONTROL TECHNOLOGY: SENSORS AND INSTRUMENTS, COMPUTER SIMULATION, AND ARTIFICIAL INTELLIGENCE | 2008年 / 7127卷
关键词：
static strain; Bragg fiber grating (FBG); pseudo-heterodyne;
D O I：
10.1117/12.806238
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A novel method for achieving high resolution for static strain measurement is proposed and demonstrated. This method is based on the combination of two fiber Bragg grating (FBG) and an all-fiber Fabry-Perot sensor (FFPI) formed by the two FBGs. The wavelength shift of the FBGs is used for determining the fringe number of the interferometic signal while the FFPI and the pseudo-heterodyne are used to carry out high-resolution measurement. The resolution for static strain by the actual measuring is 31 n epsilon.
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页数：6
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