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Proceedings Paper

Fiber microphone based on distributed acoustic sensing
Author(s): Lilong Ma; Tuanwei Xu; Kaiheng Yang; Fang Li; Qingshan Kong
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Paper Abstract

A theoretical model combined with finite element simulation and numerical analysis is presented to design and optimize of the fiber-wrapped mandrel optic microphone based on distributed acoustic sensing (DAS). To increase the acoustic pressure sensitivity, the optimized fiber-wrapped mandrel microphone with engraved uniform grooves is fabricated and tested as the acoustic transducer. The average sensitivity is -136.915dB re:1rad/μPa between 50 Hz to 2450Hz, which is 25.306dB higher than the same fiber optic microphone without uniform grooves. The experimental results are in good agreement with the theoretical results, which shows this theoretical approach is effective to design and optimize the fiber-wrapped mandrel optic microphone based on DAS.

Paper Details

Date Published: 18 December 2019
PDF: 7 pages
Proc. SPIE 11340, AOPC 2019: Optical Fiber Sensors and Communication, 1134013 (18 December 2019); doi: 10.1117/12.2547658
Show Author Affiliations
Lilong Ma, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Tuanwei Xu, Institute of Semiconductors (China)
Kaiheng Yang, Institute of Semiconductors (China)
Fang Li, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Qingshan Kong, Institute of Information Engineering (China)


Published in SPIE Proceedings Vol. 11340:
AOPC 2019: Optical Fiber Sensors and Communication
Jie Zhang; Songnian Fu; Jun Yang, Editor(s)

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