Research on a dual polarization-maintaining FBG accelerometer

Xiaofei Wang; Xiaokang Qiu; Chengjun Hu; Min Zhang; Hongpu Zhou

doi:10.1117/12.2189607

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10 August 2015 Research on a dual polarization-maintaining FBG accelerometer

Xiaofei Wang, Xiaokang Qiu, Chengjun Hu, Min Zhang, Hongpu Zhou

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Proceedings Volume 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 96200Q (2015) https://doi.org/10.1117/12.2189607
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

This paper reports a new optical fiber accelerometer which is suitable for heterodyne demodulation method. Dual low reflectivity polarization-maintaining FBG is used to form the interferometer inside accelerometer, simplify the structure of traditional interferometer and eliminate polarization fading. The resonance frequency and the sensitivity of the accelerometer are predicted by using micro-element analysis. The experimental results showed that the accelerometer’s sensitivity is more than 40 dB re rad/g, and the bandwidth is wider than 1.2 kHz. This type of optical fiber accelerometer can be widely used in acceleration sensing system which requires both high sensitivity and wide bandwidth.

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Xiaofei Wang, Xiaokang Qiu, Chengjun Hu, Min Zhang, and Hongpu Zhou "Research on a dual polarization-maintaining FBG accelerometer", Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 96200Q (10 August 2015); https://doi.org/10.1117/12.2189607

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