Fabrication of intrinsic fibre Fabry-Perot sensors in silica fibres using hydrofluoric acid etching

被引：85

作者：

Machavaram, V. R. ^{[1
]}

Badcock, R. A. ^{[1
]}

Fernando, G. F. ^{[1
]}

机构：

[1] Univ Birmingham, Dept Met & Mat, Sensors & Composites Res Grp, Birmingham B15 2TT, W Midlands, England

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2007年 / 138卷 / 01期

关键词：

hydrofluoric acid; fibre optic sensors; Fabry-Perot; intrinsic strain sensor; composites;

D O I：

10.1016/j.sna.2007.04.007

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：

When a cleaved optical fibre is immersed in hydrofluoric acid, the compositional variation within the core and the cladding results in the core-region being etched at a faster rate. This paper presents details of the experimental procedures that were used to etch SM 800 optical fibres and the characterization of the micro-cavities using a 3D surface profiler, optical and scanning electron microscopy. Two such acid-etched fibres were fusion spliced to create an intrinsic Fabry-Perot cavity. These strain sensors were surface-mounted on to fibre reinforced composite test specimens and subjected to quasi-static and cyclic loading. The intrinsic fibre Fabry-Perot sensors were interrogated using low-coherence interferometry. The output from the intrinsic Fabry-Perot sensors showed excellent correlation with surface-mounted electrical resistance strain gauges during quasi-static and cyclic loading. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：248 / 260

页数：13

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