Citation:
Edmon Chehura, Stephen W. James and Ralph P. Tatam. Simultaneous, independent measurement of temperature and strain using a tilted
fibre Bragg grating. Proceedings of the SPIE : Third European Workshop on Optical Fibre Sensors. Wednesday 04 July 2007. Napoli, Italy. Vol. 6619, 66190I. Eds. Antonello Cutolo, Brian Culshaw, Jos Miguel Lpez-Higuera.
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.
