Abstract
In this work we show that structures consisting of a metal hole array (MHA) lying on top of a 2D photonic crystal (PhC) exhibit the extraordinary transmission effect. In contrast to single MHAs, the extraordinary transmission in such hybrid structures is due to the coupling of an incident wave to eigenmodes of the PhC. Thus, the spectral positions of the transmission peaks are defined by the spectral positions of the corresponding PhC eigenmodes. Our results provide a novel powerful tool to manipulate light on a subwavelength scale.
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