Abstract
We demonstrate experimentally a spectral filter with high -factor (), wide accordability range (1500–1600 nm) with respect to the angle of incidence, and record polarization independence. This work is an experimental validation of the theoretical work reported in [Opt. Lett. 36, 1662 (2011) [CrossRef] ]: the filter is composed of two 1D crossed gratings engraved on each side of a planar waveguide. We provide a good comparison with theory and physical interpretations of the features observed experimentally.
© 2014 Optical Society of America
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