Experimental study of fiber grating curvature sensor

被引：0
|
作者：
Dong, XY [1 ]
Meng, HY [1 ]
Guan, B [1 ]
Zhao, CL [1 ]
Kai, GY [1 ]
Dong, XY [1 ]
机构：
[1] Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China
来源：
FIBER OPTICS AND OPTOELECTRONICS FOR NETWORK APPLICATIONS | 2001年 / 4603卷
关键词：
fiber Bragg grating; curvature sensor; temperature-independent;
D O I：
10.1117/12.444571
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：
A curvature sensor based on fiber Bragg grating (FBG) is demonstrated in this paper. Two FBGs are surface-bonded on opposite sides of a flexible beam to track the local curvature variation. The bending-induced strain causes opposite changes in their Bragg wavelengths. As a result, temperature-independent curvature measurement with sensitivity of 3.21 nm / m(-1) is achieved by monitoring spacing between the two Bragg wavelengths. The experimental results agree well with the theoretical analysis.
引用
收藏
页码：252 / 255
页数：4
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