Research on vibration sensing characteristics of FBG packaged with composites

Dequan Feng; Weiquan Zhou; Xiaodong Luo; Li Yang; Shaoyang Sun

doi:10.1117/12.2606121

1 November 2021 Research on vibration sensing characteristics of FBG packaged with composites

Dequan Feng, Weiquan Zhou, Xiaodong Luo, Li Yang, Shaoyang Sun

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120572U (2021) https://doi.org/10.1117/12.2606121
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

Fiber Bragg gratings (FBGs) have advantages of easy multiplexing, corrosion resistance, and anti-electromagnetic interference. FBG packaging is an important factor in optical fiber sensing, and the substrate material for packaging FBG has a great influence on sensing performance of FBG. In this paper, a FBG is packaged with an equal strength cantilever beam made of composite material. The principle of vibration sensing of the FBG sensor is theoretical analyzed. Then, experiments are performed to test the vibration sensing performance. The experimental results show that the composite material can be used to package FBG. The FBG sensor has a good response to the external vibration after package. The resonant frequency of the FBG sensor is 115Hz, and the acceleration sensitivity is almost 30pm/g in the range of 20~70Hz.

Citation Download Citation

Dequan Feng, Weiquan Zhou, Xiaodong Luo, Li Yang, and Shaoyang Sun "Research on vibration sensing characteristics of FBG packaged with composites", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120572U (1 November 2021); https://doi.org/10.1117/12.2606121

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