Simultaneous measurement of displacement and temperature using in-fibre-Bragg-grating-based extrinsic Fizeau sensor

Author

Rao, Y.J. ; Cooper, M.R. ; Jackson, D.A. ; Pannell, C.N. ; Reekie, L.

Author_Institution

Dept. of Optoelectron. Eng., Chongqing Univ., China

Volume

36

Issue

19

fYear

2000

fDate

9/14/2000 12:00:00 AM

Firstpage

1610

Lastpage

1612

Abstract

A novel method for simultaneously measuring displacement and temperature using an in-fibre-Bragg-grating (FBG) based extrinsic Fizeau interferometric sensor is presented. The Fizeau cavity is formed by an FBG with low reflectivity and a highly reflective surface. The FBG acts as both a reflector for the Fizeau interferometer and a temperature sensor, at the same time. Experimental results are provided which demonstrate the feasibility of this sensor design

Keywords

Bragg gratings; displacement measurement; fibre optic sensors; light interferometers; light interferometry; mirrors; optical design techniques; reflectivity; temperature measurement; temperature sensors; Fizeau cavity; Fizeau interferometer; Fizeau sensor; displacement measurement; extrinsic Fizeau interferometric sensor; feasibility; highly reflective surface; in-fibre-Bragg-grating; in-fibre-Bragg-grating-based extrinsic Fizeau sensor; low reflectivity; reflector; sensor design; simultaneous measurement; temperature measurement; temperature sensor;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20001134

Filename

871144