Localization of light in lossless inhomogeneous dielectrics
نویسندگان
چکیده
The localization of electromagnetic waves in lossless inhomogeneous dielectric media is studied. We consider a three-dimensional lossless periodic medium (photonic crystal) having a gap in the frequency spectrum (photonic bandgap). If such a medium is perturbed by either a single defect or a random array of defects, exponentially localized electromagnetic waves arise with frequencies in the gap. For a single defect, we derive equations for these midgap frequencies and estimate their number. For a random medium, we show the occurrence of Anderson localization for electromagnetic waves. © 1998 Optical Society of America [S0740-3232(98)00305-6] OCIS codes: 260.2110, 350.7420.
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تاریخ انتشار 1998