分形光栅的散射
SCATTERING BY FRACTAL GRATING
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摘要: 本文根据菲涅尔-基尔霍夫理论,研究了均匀Cantor集分形和Sierpinski地毯(carpet)分布光栅结构的电磁(光)散射,计算了一维和二维分形光栅散射的强度分布,分析了它们的空间频率分布特性.其数值结果表明,它们均具有明显的分形特征和频率选择特性.
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关键词:
- 分形; 光栅; 散射
Abstract: Based on Fresnel-Kirchhoff theory, the electromagnetic scattering from fractal gratings, which have structure on uniform Cantor sets or Siepinski carpet, is discussed. The scattering intensities of 1-dimensional and 2-dimensional fractal grating with different fractal dimension are calculated and their properties on spatial frequency distrubution are then analysed. The numerical results illustrate the fractal characteristics and frequency selectivities. -
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