Abstract
Photonic crystals with slightly different band-gaps can be stacked to produce heterostructures. Wave-guiding of electromagnetic radiation in such photonic crystal heterostructures is proposed, and analyzed in terms of an equivalent wave admittance, η, and the lateral Bloch wavenumber, kB, for each layer. A transfer matrix formalism is used in order to derive a generalized eigenvalue equation. Two dimensional photonic crystal heterostructure waveguides are expected to exhibit reduced out-of-plane and reflection losses and further increase the coupling of spontaneous emission into the guided mode as compared to conventional photonic crystal waveguides. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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