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Temperature and strain discrimination using a single tilted fibre Bragg grating

By Edmon Chehura, Stephen W. James and Ralph P. Tatam

Abstract

A fibre optic sensor capable of discriminating between temperature and strain, using a single fibre Bragg grating, is presented. The technique exploits the core–cladding mode coupling of a tilted fibre Bragg grating (TFBG). The core and cladding modes exhibit different thermal sensivities, while the strain sensivities are approximately equal. Monitoring the core–core mode coupling resonance and the core–cladding mode coupling resonance of the TFBG spectrum allows the separation of the temperature and strain induced wavelength

Topics: Temperature, Strain, Sensor, Tilted fibre Bragg grating, FBG, TFBG
Publisher: Elsevier Science B.V., Amsterdam.
Year: 2007
DOI identifier: 10.1016/j.optcom.2007.03.043
OAI identifier: oai:dspace.lib.cranfield.ac.uk:1826/2241
Provided by: Cranfield CERES
Journal:

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