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Light localization in photonic band gaps of quasiperiodic dielectric structures

机译:准周期电介质结构的光子带隙中的光定位

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摘要

Localized light wave states in the photonic band gaps in two-dimensional octagonal and decagonal quasiperiodic dielectric media are investigated by considering the corresponding approximant structures. The structure effects on the local resonances at high-symmetry centers are studied in terms of the interscatterer correlation and the coupling strength between neighbor scatterers is analyzed as a function of the local symmetry order, the structure dielectric contrast, and the scatterer size. It is shown that an interscatterer distance threshold can be defined for the light localization regime. The threshold is determined by the geometrical and dielectric properties of the scatterers and independent of the local symmetry. It is thus likely a universal parameter for light localization in dielectric structures containing high-symmetry centers.
机译:通过考虑相应的近似结构,研究了二维八边形和十边形准周期电介质中光子带隙中的局部光波状态。根据散射体间的相互关系研究了结构对高对称中心局部共振的影响,并根据局部对称性,结构介电对比度和散射体尺寸分析了相邻散射体之间的耦合强度。显示出可以为光定位方案定义散射体间距离阈值。该阈值由散射体的几何和介电特性确定,并且与局部对称性无关。因此,对于包含高对称中心的介电结构中的光定位,这可能是一个通用参数。

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