Abstract

Bragg gratings written in high birefringence (HiBi) fibre optics can be used as sensors for multiple parameters, such as stress along different axis and temperature. Their use as sensors require the characterization of the HiBi fibres, because the specific fibre parameters can induce different responses to the sensor system. In this work we analyse, using finite elements methods, stress effects over three types of the HiBi fibres: Bow tie, PANDA and internal elliptical cladding. We also characterize the spectral response of gratings written in HiBi fibre as a function of the input states of the polarization. The obtained results are discussed.

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