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Title: Simultaneous measurement of strain and temperature using the first- and second-order diffraction wavelengths of bragg gratings
Authors: Kalli, Kyriacos 
Jackson, David A.
Webb, David J. 
Brady, Garret P.
Reekie, Laurence
Archambault, Jean Luc
Keywords: Diffraction gratings
Temperature measurements
Fiber optics
Bragg gratings
Issue Date: 1997
Publisher: IEEE Xplore Digital Library
Source: IEE Proceedings: Optoelectronics,1997, Volume 144, Issue 3, Pages 156-161
Abstract: A method of discriminating between temperature and strain effects in fibre sensing using a conventionally written, in-fibre Bragg grating is presented. The technique uses wavelength information from the first and second diffraction orders of the grating element to determine the wavelength dependent strain and temperature coefficients, from which independent temperature and strain measurements can be made. The authors present results that validate this matrix inversion technique and quantify the strain and temperature errors which can arise for a given uncertainty in the measurement of the reflected wavelength
ISSN: 1350-2433 (print)
1359-7078 (online)
DOI: 10.1049/ip-opt:19971373
Rights: © IEEE.
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