EFFECT OF PERIODIC DEFECTS ON ELECTROMAGENTIC SCATTERING BY THE TWO-DIMENSIONAL PHOTONIC CRYSTALS |
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Authors: | Vakhtang Jandieri Kiyotoshi Yasumoto and Hongting Jia |
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Institution: | (1) Department of Computer Science and Communication Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan |
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Abstract: | Electromagnetic scattering from two-dimensional photonic crystals with two-dimensionally periodic defects is analyzed using
a model of multilayered periodic arrays of parallel circular cylinders. The reflectance of the photonic crystals of finite
thickness, which are free-standing or embedded in a dielectric slab, is obtained in terms of the lattice-sums, the T-matrix
of a circular cylinder, and the generalized reflection matrix for a layered system. Numerical examples demonstrate that the
refection and transmission bands of the crystals are reformed by introducing the periodic defects and their band natures are
very sensitive to the polarization of excitation and the relative position of the defect element within a unit cell. |
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Keywords: | Photonic crystals periodic defects lattice sums T-matrix reflectance |
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