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Proceedings Paper

A fiber-optic hydrophone with an acoustic filter
Author(s): Zefeng Wang; Yongming Hu; Zhou Meng; Ming Ni; Hong Luo
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Paper Abstract

A novel Michelson interferometric fiber-optic hydrophone with a mechanical anti-aliasing acoustic filter, which consists of a two-hole cylindrical Helmholtz resonator, has been manufactured and tested. Experimental results show that this new fiber-optic hydrophone has a function of acoustic low-pass filtering. The low frequency sensitivity, as determined by the fiber interferometer and the sensing mandrel, is about -159dB re 1rad/μPa. The frequency response has a break point near 1200Hz and a measured roll-off of 50dB/octave. The fiber-optic hydrophone is a prototype device for a class of sensors that used to eliminate aliasing in the future sonar systems. To our knowledge, this is the first time that such a fiber-optic hydrophone has been reported.

Paper Details

Date Published: 26 November 2007
PDF: 5 pages
Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 683011 (26 November 2007); doi: 10.1117/12.754799
Show Author Affiliations
Zefeng Wang, National Univ. of Defense Technology (China)
Yongming Hu, National Univ. of Defense Technology (China)
Zhou Meng, National Univ. of Defense Technology (China)
Ming Ni, National Univ. of Defense Technology (China)
Hong Luo, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 6830:
Advanced Sensor Systems and Applications III
Yun-Jiang Rao; Yanbiao Liao; Gang-Ding Peng, Editor(s)

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