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Proceedings Paper

Temperature and strain discrimination using a single fibre Bragg grating written in a tapered optical fibre
Author(s): H. F. Lima; P. F. Antunes; R. N. Nogueira; J. L. Lemos Pinto
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Paper Abstract

A sensing head configuration and the necessary interrogation parameters to simultaneously measure strain and temperature using a single FBG are presented and demonstrated. By writing the FBG in a linearly etched fibre, we were able to use the information encoded in the peak wavelength and in the spectral width of the fibre Bragg grating. The spectral width of the grating depends uniquely on the applied strain and is temperature independent. An uncertainty of ±15.26 με and ±1.92 ºC was obtained in the experimental verification.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032Z (5 October 2009); doi: 10.1117/12.835132
Show Author Affiliations
H. F. Lima, Univ. de Aveiro (Portugal)
P. F. Antunes, Univ. de Aveiro (Portugal)
R. N. Nogueira, Instituto de Telecomunicações (Portugal)
J. L. Lemos Pinto, Univ. de Aveiro (Portugal)

Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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