Title :
Simultaneous independent temperature and strain measurement using in-fibre Bragg grating sensors
Author :
James, S.W. ; Dockney, M.L. ; Tatam, R.P.
Author_Institution :
Centre of Mech. Eng., Cranfield Univ., Bedford, UK
fDate :
6/6/1996 12:00:00 AM
Abstract :
A new technique for the simultaneous, independent measurement of temperature and strain using in-fibre Bragg grating sensors is proposed and demonstrated. Two Bragg gratings with closely spaced centre wavelengths are written either side of a splice between two fibres of different diameter. The gratings show similar temperature sensitivities but different strain responses to an applied stress. Maximum errors of ±17 με and ±1° are reported over 2500 με and 120°C measurement ranges
Keywords :
diffraction gratings; fibre optic sensors; strain measurement; temperature measurement; closely spaced centre wavelengths; in-fibre Bragg grating sensors; strain measurement; strain responses; temperature measurement; temperature sensitivities;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960732
