Abstract

Multiple omnidirectional resonance modes are generated in the periodic arrangement of photonic crystal (PC) heterostructures with two sub-PCs consisting of single-negative (permittivity- or permeability-negative) materials. The key to designing such heterostructures is that only one of the sub-PCs possesses the zero-${\phi }_{\mathrm{eff}}$ gap. It is found that the resonance transmission modes inside the zero-${\phi }_{\mathrm{eff}}$ gap of these heterostructures are insensitive to incident angle. Moreover, as the periods of the heterostructure increases, the resonance transmission modes will split and be located symmetrical on both sides of the midfrequency of the zero-${\phi }_{\mathrm{eff}}$ gap.

© 2006 Optical Society of America

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