Temperature and strain discrimination using a single fibre Bragg grating written in a tapered optical fibre

H. F. Lima; P. F. Antunes; R. N. Nogueira; J. L. Lemos Pinto

doi:10.1117/12.835132

5 October 2009 Temperature and strain discrimination using a single fibre Bragg grating written in a tapered optical fibre

H. F. Lima, P. F. Antunes, R. N. Nogueira, J. L. Lemos Pinto

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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75032Z (2009) https://doi.org/10.1117/12.835132
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

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.

Citation Download Citation

H. F. Lima, P. F. Antunes, R. N. Nogueira, and J. L. Lemos Pinto "Temperature and strain discrimination using a single fibre Bragg grating written in a tapered optical fibre", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032Z (5 October 2009); https://doi.org/10.1117/12.835132

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