A fiber-optic flexural disk microphone of high sensitivity

Ran Tao; Xuqiang Wu; Qifa Zhang; Sheng Huang; Gang Zhang; Benli Yu

doi:10.1117/12.2000607

13 December 2012 A fiber-optic flexural disk microphone of high sensitivity

Ran Tao, Xuqiang Wu, Qifa Zhang, Sheng Huang, Gang Zhang, Benli Yu

Proceedings Volume 8561, Advanced Sensor Systems and Applications V; 85610D (2012) https://doi.org/10.1117/12.2000607
Event: Photonics Asia, 2012, Beijing, China

Abstract

A fiber-optic flexural disk microphone is developed to detect acoustic signals in the air. It consists of a Mach-Zehnder interferometer with an optimized sensing arm of 7.93 m. The disk’s resonance frequencies and their influence on the microphone’s sensitivity are investigated. The microphone’s frequency response is measured in the frequency range from 100 Hz to 5 kHz and the average phase sensitivity is about -120.7 dB re 1rad/μPa.

Citation Download Citation

Ran Tao, Xuqiang Wu, Qifa Zhang, Sheng Huang, Gang Zhang, and Benli Yu "A fiber-optic flexural disk microphone of high sensitivity", Proc. SPIE 8561, Advanced Sensor Systems and Applications V, 85610D (13 December 2012); https://doi.org/10.1117/12.2000607

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