1 September 2003 Diaphragm-type fiber-optic interferometric acoustic sensor
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Optical Engineering, 42(9), (2003). doi:10.1117/1.1596433
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 directional 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 –139 dB re V/μPa and 82 dB re μPa, respectively.
Nan Zeng, Chunzheng Shi, Dongning Wang, Min Zhang, Yanbiao Liao, "Diaphragm-type fiber-optic interferometric acoustic sensor," Optical Engineering 42(9), (1 September 2003). http://dx.doi.org/10.1117/1.1596433
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KEYWORDS
Acoustics

Sensors

Fiber optics sensors

Fiber optics

Interferometry

Protactinium

Optical fibers

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