A fiber-optic hydrophone with an acoustic filter - art. no. 683011

被引：0

作者：

Wang, Zefeng ^{[1
]}

Hu, Yongming ^{[1
]}

Meng, Zhou ^{[1
]}

Ni, Ming ^{[1
]}

Luo, Hong ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Photoelect Sci & Engn, Changsha 410073, Peoples R China

来源：

ADVANCED SENSOR SYSTEMS AND APPLICATIONS III | 2008年 / 6830卷

关键词：

interferometer; fiber-optic sensor; fiber-optic hydrophone; anti-aliasing; acoustic filter;

D O I：

10.1117/12.754799

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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/mu Pa. 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.

引用

页码：83011 / 83011

页数：5

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