Simultaneous independent measurement of temperature and strain using a tilted fibre Bragg grating

Edmon Chehura; Stephen W. James; Ralph P. Tatam

doi:10.1117/12.738371

2 July 2007 Simultaneous independent measurement of temperature and strain using a tilted fibre Bragg grating

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

Proceedings Volume 6619, Third European Workshop on Optical Fibre Sensors; 66190I (2007) https://doi.org/10.1117/12.738371
Event: Third European Workshop on Optical Fibre Sensors, 2007, Napoli, Italy

Abstract

A single fibre Bragg grating is used to discriminate between temperature and strain by exploiting 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 within the spectrum of a single TFBG allows the separation of the temperature and strain induced wavelength shifts.

Citation Download Citation

Edmon Chehura, Stephen W. James, and Ralph P. Tatam "Simultaneous independent measurement of temperature and strain using a tilted fibre Bragg grating", Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66190I (2 July 2007); https://doi.org/10.1117/12.738371

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