Fitting-based determination of an effective medium of a metallic periodic structure and application to photonic crystals

Seyoung Moon, Donghyun Kim

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19 Citations (Scopus)


Effective permittivities of a metallic periodic structure for which the second-order effective-medium theory does not yield correct results were obtained by numerically fitting to rigorous-coupled-wave analysis (RCWA). The calculated effective medium showed good agreement with RCWA and minimal deviation in the long-wavelength limit with variation in angle of incidence, grating depth, superstrate, and fill factor. In terms of the standard deviation, the effective medium was least affected by the change in grating depths. The calculated effective permittivities were applied to a three-dimensional metallic photonic-crystal structure and produced a photonic bandgap that is consistent with published experimental data.

Original languageEnglish
Pages (from-to)199-207
Number of pages9
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Issue number1
Publication statusPublished - 2006 Jan


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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