Title :
Departure from linearity of fibre Bragg grating temperature coefficients
Author :
Flockhart, G.M.H. ; MacPherson, W.N. ; Barton, J.S. ; Jones, J.D.C. ; Zhang, L. ; Bennion, I.
Author_Institution :
Dept. of Phys., Heriot-Watt Univ., Edinburgh, UK
Abstract :
We have measured the Bragg wavelength shift of three gratings from -30/spl deg/C to +80/spl deg/C. The observed deviation from linearity is a quadratic function of temperature, arising from the non-linear thermo-optic coefficient of silica glass.
Keywords :
Bragg gratings; optical fibres; thermo-optical effects; -30 to 80 degC; SiO/sub 2/; fibre Bragg grating; linearity; nonlinear thermo-optic coefficient; silica glass; temperature coefficient; wavelength shift; Bragg gratings; Fiber gratings; Fourier transforms; Linearity; Optical interferometry; Signal resolution; Temperature dependence; Temperature measurement; Temperature sensors; Wavelength measurement;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000505
