Photonic crystal heterostructure waveguides

摘要

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, k_B, for each layer. A trans-fer 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.