Abstract

We experimentally demonstrate, by etching a “doubly periodic” pattern in a high-index material (Ta$_2$O$_5$), that guided-mode resonance filters can exhibit polarization independent peaks with a Q factor of 5600. Beyond this promising result, complementary characterizations give us some leads to rectify the energy repartition between reflection, transmission, and losses.

© 2010 IEEE

Experimental demonstration of a narrowband, angular tolerant, polarization independent, doubly periodic resonant grating filter

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