High-robustness polarization-based optical fiber Fabry-Perot microphone

Haokun Yang; Shuang Wang

doi:10.1117/12.3003769

27 September 2023 High-robustness polarization-based optical fiber Fabry-Perot microphone

Haokun Yang, Shuang Wang

Proceedings Volume 12813, Asia-Pacific Optical Sensors Conference (APOS 2023); 128130H (2023) https://doi.org/10.1117/12.3003769
Event: Asia Pacific Optical Sensors Conference 2023, 2023, Tianjin, China

Abstract

This paper is to introduce a high-robustness polarization-based optical fiber Fabry-Perot microphone system. This system features an extrinsic Fabry-Perot interferometric (EFPI) sensor with a polyphenylene sulfide (PPS) diaphragm for signal detection. It is further integrated into a cross-correlation interrogation system using polarization low-coherence interference technology with a birefringent crystal. The interrogation system does not require an orthogonal relationship between the interference signals. Moreover, it can still work when the initial cavity length of the sensor drifts due to the influence of the environment. The experiments have been carried out to verify broadband signal and voice detection capability. The experimental results showcase several notable advantages of the proposed system, including a wide frequency range, high sensitivity. Consequently, the system holds tremendous potential for diverse practical engineering applications.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Haokun Yang and Shuang Wang "High-robustness polarization-based optical fiber Fabry-Perot microphone", Proc. SPIE 12813, Asia-Pacific Optical Sensors Conference (APOS 2023), 128130H (27 September 2023); https://doi.org/10.1117/12.3003769

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