Novel FBG temperature sensor eliminating lateral strain cross-sensitivity

Wen-hua Wang; Si-dong Li; Wei-na Wu; Zheng-ye Xiong; You-bin Shi; Jun-xiu Lin

doi:10.1117/12.806385

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2 February 2009 Novel FBG temperature sensor eliminating lateral strain cross-sensitivity

Wen-hua Wang, Si-dong Li, Wei-na Wu, Zheng-ye Xiong, You-bin Shi, Jun-xiu Lin

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Proceedings Volume 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications; 71570W (2009) https://doi.org/10.1117/12.806385
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

Abstract

The novel FBG temperature sensor eliminating lateral strain cross-sensitivity was present and theoretically analyzed. The temperature sensor characteristic of the FBG based on the method for eliminating lateral strain was researched from room temperature to 190°C, and the FBG was pressed by lateral force during rising temperature. The lateral force resulted in the birefringence of the FBG, and the FBG exited two different reflective spectra meeting with the Bragg condition. The change spacing of the peak value between two reflective spectra is used to eliminate lateral strain crosssensitivity to temperature, and amend the temperature sensitivity coefficient and the change temperature value.

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Wen-hua Wang, Si-dong Li, Wei-na Wu, Zheng-ye Xiong, You-bin Shi, and Jun-xiu Lin "Novel FBG temperature sensor eliminating lateral strain cross-sensitivity", Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 71570W (2 February 2009); https://doi.org/10.1117/12.806385

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