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Proceedings Paper

Study on a fiber optic gradient hydrophone based on interferometer
Author(s): Wenlei Lv; Meng Pang; Qingping Shi; Min Zhang; Yanbiao Liao; Libo Yuan; Chong Kang
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Paper Abstract

We proposed a kind of fiber-optic gradient hydrophone based on interferometer. Two arms of the interferometer are sensing fibers, each of which can be regard as a scalar pressure sensing element, and then the phase gradient between the two elements is transformed into the light intensity modulated output by the coupler. In this paper, a suit of analytical models for researching the sensor performance are developed. The theoretical and experimental research was carried out to demonstrate this kind of gradient hydrophone's phase sensitivity as the function of the measure frequency and the "8" directivity response.

Paper Details

Date Published: 28 January 2009
PDF: 7 pages
Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 71561E (28 January 2009); doi: 10.1117/12.805496
Show Author Affiliations
Wenlei Lv, Harbin Engineering Univ. (China)
Meng Pang, Hong Kong Polytechnic Univ. (Hong Kong, China)
Qingping Shi, Tsinghua Univ. (China)
Min Zhang, Tsinghua Univ. (China)
Yanbiao Liao, Tsinghua Univ. (China)
Libo Yuan, Harbin Engineering Univ. (China)
Chong Kang, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 7156:
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments

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