Fiber-optic multilayer hydrophone for ultrasonic measurement

被引：37

作者：

Wilkens, V ^{[1
]}

Koch, C ^{[1
]}

机构：

[1] Phys Tech Bundesanstalt, Lab 1 43, D-38023 Braunschweig, Germany

来源：

ULTRASONICS | 1999年 / 37卷 / 01期

关键词：

fiber-optic sensors; ultrasonic pressure measurement; multilayer interference filter;

D O I：

10.1016/S0041-624X(98)00037-7

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

An ultrasonic hydrophone is presented that comprises a fiber tip coated with a dielectric multilayer system. Two different layer designs are investigated with respect to their suitability for sensing and their reflectance slope which determines the sensitivity. The more advantageous Fabry-Perot stack was experimentally implemented, and first successful measurements are described. Low-intensity signals are detected with a high signal-to-noise ratio. The sensor can be used for acoustic pressure measurement with high temporal and spatial resolution in a wide power range. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：45 / 49

页数：5

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