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Quality factor for localized defect modes in a photonic crystal slab upon a low-index dielectric substrate

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Abstract

Localized defect modes in a two-dimensional photonic crystal slab upon a SiO2 substrate have been analyzed by a numerical simulation of dipole radiation based on the finite-difference time-domain method. A degenerate pair of the defect mode of E1 spatial symmetry was found in a pseudogap in the spectrum of dipole radiation. We achieved a quality factor as large as 800 by optimizing the sample geometry.

© 2001 Optical Society of America

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