The main objective is to develop fiber optic sensors based on Bragg gratings either Fiber Bragg Grating (FBG) or Fiber Long Period Grating (LPG). These studies are focused to discriminate between the various contributions especially temperature and deformation. We also study a new chemical sensor based on FBG written in microstructured fiber or polished fibre component. An electromagnetic modelling describes the home-made sensors and is used to develop other future original devices based on plasmonic effects.
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