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We show that the performance of frequency-domain solvers of Maxwell’s equations is greatly affected by the kind of the perfectly matched layer (PML) used. In particular, we demonstrate that using the stretched-coordinate PML (SC-PML) results in significantly faster convergence speed than using the uniaxial PML (UPML). Such a difference in convergence behavior is explained by an analysis of the condition...
The optical properties of nanoscale apertures in optically thick metallic films have been intensely researched in the past years due to their fundamental importance in near-field optics. Here, we show that the entire dispersion behavior of a plasmonic structure with coaxial cross-section i.e., formed by a dielectric ring between a metallic core and a metallic cladding, is well-approximated by a simple...
Summary form only given. Photonic crystals can be employed as the substrates of planar antenna to minimize or eliminate the radiation energy loss into the substrate. Previously, surface waves of two-dimensional (2D) photonic crystals has been studied in the case that a complete bandgap exists for only one polarization state. We study the surface waves of a 2D photonic crystal with a complete photonic...
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