Experimental study of fiber grating curvature sensor

Xinyong Dong; Hongyun Meng; Bai'ou Guan; Chunliu Zhao; Guiyun Kai; Xiaoyi Dong

doi:10.1117/12.444571

16 October 2001 Experimental study of fiber grating curvature sensor

Xinyong Dong, Hongyun Meng, Bai'ou Guan, Chunliu Zhao, Guiyun Kai, Xiaoyi Dong

Proceedings Volume 4603, Fiber Optics and Optoelectronics for Network Applications; (2001) https://doi.org/10.1117/12.444571
Event: International Symposium on Optoelectonics and Microelectronics, 2001, Nanjing, China

Abstract

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 3.21nm/m^MIN1 is achieved by monitoring spacing between the two Bragg wavelengths. The experimental results agree well with the theoretical analysis.

Citation Download Citation

Xinyong Dong, Hongyun Meng, Bai'ou Guan, Chunliu Zhao, Guiyun Kai, and Xiaoyi Dong "Experimental study of fiber grating curvature sensor", Proc. SPIE 4603, Fiber Optics and Optoelectronics for Network Applications, (16 October 2001); https://doi.org/10.1117/12.444571

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