A high sensitivity fiber optic acoustic sensor based on incident-angle sensing: application to detect snoring signals

Shengjun Cui; Jing Chen; Jiayi Sun; Weicheng Cai; Hui Huang

doi:10.1117/12.3006438

26 September 2023 A high sensitivity fiber optic acoustic sensor based on incident-angle sensing: application to detect snoring signals

Shengjun Cui, Jing Chen, Jiayi Sun, Weicheng Cai, Hui Huang

Author Affiliations +

Proceedings Volume 12793, International Conference on Mechatronics and Intelligent Control (ICMIC 2023); 127930Q (2023) https://doi.org/10.1117/12.3006438
Event: International Conference on Mechatronics and Intelligent Control (ICMIC2023), 2023, Wuhan, China

Abstract

This article reported a fiber optic acoustic sensor (FOAS) used for measuring snoring signals. The fabricated sensor consists of a single-mode fiber collimator and a gold-plated quartz film. Based on the incident-angle sensing mechanism, the sensor gets rid of the stringent control of the operating wavelength and cavity length, which greatly reduce the difficulty and cost of equipment manufacturing. Experimental results show that the fabricated sensor has a sensitivity of -145.3dB (re V/µPa @5KHz) and a minimum detectable sound pressure (MDP) of 14.0µPa/Hz1/2 @ 5KHz. The prepared sensor has the advantages of simple structure, low cost, compactness, and high sensitivity, which can be used for real-time monitoring of snoring signals.

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

Citation Download Citation

Shengjun Cui, Jing Chen, Jiayi Sun, Weicheng Cai, and Hui Huang "A high sensitivity fiber optic acoustic sensor based on incident-angle sensing: application to detect snoring signals", Proc. SPIE 12793, International Conference on Mechatronics and Intelligent Control (ICMIC 2023), 127930Q (26 September 2023); https://doi.org/10.1117/12.3006438

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