Role of evanescent modes in direct, efficient coupling into slow light photonic crystal waveguides

De Sterke, C. M.; Dossou, K. B.; White, T. P.; Botten, L. C.; McPhedran, R. C.

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Role of evanescent modes in direct, efficient coupling into slow light photonic crystal waveguides

Date

2009

Authors

Abstract

The assumption that coupling into slow PC waveguide modes is inefficient is shown to be incorrect. Efficient coupling is possible, provided strong evanescent modes are present to match fields at the interface with fast medium.