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Non-linear temperature dependence of Bragg gratings written in different fibres, optimized for sensor applications over a wide range of temperatures

Pal, Suchandan and Sun, Tong and Grattan, Kenneth and Wade, Scott A and Collins, Stephen F and Baxter, Gregory W and Dussardier, Bernard and Monnom, Gerard (2004) Non-linear temperature dependence of Bragg gratings written in different fibres, optimized for sensor applications over a wide range of temperatures. Sensors and Actuators. A, Physical, 112 (2-3). pp. 211-219. ISSN 0924-4247

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Abstract

Temperature measurements have been made by using fibre Bragg gratings (FBGs) written in a range of fibres and detailed data on their characteristics are presented. The data are fitted to polynomials that may be used in the calibration of temperature measurements with these types of gratings in automated systems. Issues of precision in such measurements from room temperature to 500 °C have been considered using several gratings of type I and IIA written in three different photosensitive fibres, taking into account the non-linear temperature response of the fibre Bragg gratings. Comparisons between the linear and the higher order polynomial regression showed a better performance in calibrated temperature measurement applications when the non-linear temperature coefficients are included, yielding an acceptable rms error of less than or comparable to 1.9 °C, compared to linear regression, with the rms error range of 3.3–7.5 °C for the various gratings studied, over the whole measurement range.

Item Type: Article
Uncontrolled Keywords: ResPubID: 7446, temperature, fibre Bragg grating, Bragg wavelength, temperature sensitivity, non-linearity, thermo-optic coefficient
Subjects: FOR Classification > 0906 Electrical and Electronic Engineering
Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: VUIR
Date Deposited: 04 Dec 2009 04:37
Last Modified: 09 Jun 2013 01:00
URI: http://vuir.vu.edu.au/id/eprint/2127
DOI: 10.1016/j.sna.2004.01.024
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Citations in Scopus: 18 - View on Scopus

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