Abstract

We report that a narrow guided-mode resonance (GMR) filter with high-index substrate can be achieved by introducing an added layer on the substrate. For this type of GMR filter, the refractive index and thickness of the added layer are the critical parameters for the GMR effect to occur. We demonstrate that this filter has good fabrication tolerances for the grating thickness and fill factor. Our design may promote the application of GMR filters in practice.

© 2012 Optical Society of America

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