UV written planar Bragg grating sensors: geometries and applications

Abstract

Bragg gratings in optical fibres are a well developed technology that finds many applications in photonics, including wavelength stabilization, dispersion compensation, and use as temperature and strain sensors. In recent years we have developed planar Bragg grating devices as integrated counterparts to fibre based devices[1]. The implementation of Bragg gratings in planar opens many new degrees of freedom because it is possible to make more intricate circuits incorporating splitters, interferometers, couplers, etc