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Efficient coupling into slow light photonic crystal waveguide without transition region: role of evanescent modes

Martijn de Sterke, C.; Dossou, K. B.; White, T. P.; Botten, L. C.; McPhedran, R. C.


We show that efficient coupling between fast and slow photonic crystal waveguide modes is possible, provided that there exist strong evanescent modes to match the waveguide fields across the interface. Evanescent modes are required when the propagating modes have substantially different modal fields, which occurs, for example, when coupling an index-guided mode and a gap-guided mode.

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.17.017338
Access Rights: Open Access


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