Miniature optical fibre ultrasonic hydrophone using a Fabry-Perot polymer film interferometer

被引：83

作者：

Beard, PC

Mills, TN

机构：

[1] University College London, Dept. of Med. Phys. and Bioeng., Shropshire House, London WC1E 6JA

来源：

ELECTRONICS LETTERS | 1997年 / 33卷 / 09期

关键词：

fibre optic sensors; light interferometers; hydrophones;

D O I：

10.1049/el:19970545

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：

An optical fibre hydrophone for the measurement and detection of ultrasound is described. The active sensing element consists of a tow finesse Fabry-Perot polymer film interferometer bonded to the lip of an optical fibre, of 50 mu m core diameter and 0.25mm outer diameter. Sensitivity was found to be 114mV/MPa with an acoustic noise floor of 15kPa over a 25MHz bandwidth.

引用

页码：801 / 803

页数：3

共 5 条

[1] EMBEDDED FIBEROPTIC FABRY-PEROT ULTRASOUND SENSOR [J].