Distributed transverse load sensing with tilted fiber Bragg gratings using optical frequency domain reflectometry

Yang Zhang; Tingting Sun; LingYun Xiong; Mohammad Zahirul Alam; Jacques Albert

doi:10.1117/12.974987

17 October 2012 Distributed transverse load sensing with tilted fiber Bragg gratings using optical frequency domain reflectometry

Yang Zhang, Tingting Sun, LingYun Xiong, Mohammad Zahirul Alam, Jacques Albert

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84214S (2012) https://doi.org/10.1117/12.974987
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A simple and novel distributed tilted fiber Bragg gratings (TFBGs) based transverse load sensing system using optical frequency domain reflectometry (OFDR) is proposed and demonstrated for the first time. The transverse load compresses an elastomer material around the fiber and induces a broadband loss in the spectrum of the TFBG. The additional loss is directly measured by the return loss spectrum of Fresnel reflection points introduced in the Rayleigh backscattering trace. With the wavelength sweeping characteristic of OFDR, we realized distributed sensing by interrogating each of the TFBGs with different wavelengths and observed a minimum crosstalk effect between sensors.

Citation Download Citation

Yang Zhang, Tingting Sun, LingYun Xiong, Mohammad Zahirul Alam, and Jacques Albert "Distributed transverse load sensing with tilted fiber Bragg gratings using optical frequency domain reflectometry", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214S (17 October 2012); https://doi.org/10.1117/12.974987

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