Spatially-multiplexed fibre-optic Bragg grating strain and temperature sensor system based on interferometric wavelength-shift detection

Author

Rao, Y.J. ; Kalli, K. ; Brady, G. ; Webb, D.J. ; Jackson, D.A. ; Zhang, L. ; Bennion, I.

Author_Institution

Phys. Lab., Kent Univ., Canterbury, UK

Volume

31

Issue

12

fYear

1995

fDate

6/8/1995 12:00:00 AM

Firstpage

1009

Lastpage

1010

Abstract

A prototype fibre-optic system using interferometric wavelength-shift detection, capable of multiplexing up to 32 fibre-optic Bragg grating strain and temperature sensors with identical characteristics, has been demonstrated. This system is based on a spatially multiplexed scheme for use with fibre-based low-coherence interferometric sensors, reported previously. Four fibre-optic Bragg grating channels using the same fibre grating have been demonstrated for measuring quasi-static strain and temperature

Keywords

diffraction gratings; fibre optic sensors; light interferometers; multiplexing; strain measurement; strain sensors; temperature sensors; fibre grating; fibre optic sensors; fibre-based low-coherence interferometric sensors; fibre-optic Bragg grating channels; fibre-optic system; interferometric wavelength-shift detection; quasi-static strain; spatially multiplexed scheme; spatially-multiplexed fibre-optic Bragg grating sensor; temperature sensor;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19950670

Filename

390967