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Optical Engineering

Article . 2003 . Peer-reviewed

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Optical Engineering

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Diaphragm-type fiber-optic interferometric acoustic sensor

descriptionPublicationkeyboard_double_arrow_right Article 01 Sep 2003 English Publisher:SPIE-Intl Soc Optical EngJournal:Optical Engineering, volume 42, page 2,558 (issn: 0091-3286,

Authors: C.Z. Shi; N. Zeng; Y.B. Liao; Dongning Wang; Min Zhang;

doi: 10.1117/1.1596433

Diaphragm-type fiber-optic interferometric acoustic sensor

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Abstract

A diaphragm-type fiber-optic acoustic sensor is developed. In such a sensor, the sound-induced strain is imposed on the fiber on the diaphragm-type sensing element, and can be measured by the use of a Mach-Zehnder interferometer. The diaphragm structure can provide di- rectional response with high sensitivity. The experimental measurement frequency range is from 100 Hz to 5 kHz. The sensitivity and minimum detectable acoustic pressure of the system are 2139 dB re V/mPa and 82 dB re mPa, respectively. © 2003 Society of Photo-Optical Instrumentation Engi- neers. (DOI: 10.1117/1.1596433)

Related Organizations

Tsinghua University
China (People's Republic of)
Hong Kong Polytechnic University
China (People's Republic of)

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