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物理学报  2007 

Dispersion and localization of defect state in one-dimensional photonic crystal consisting of metamaterials
含奇异材料的掺杂一维光子晶体色散关系和空间局域度理论

Keywords: one-dimensional photonic crystal,defect state,localization,metamaterials
一维光子晶体
,缺陷态,空间局域度,奇异材料

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Abstract:

The expressions of the dispersion relationship and space localization in the one-dimensional photonic crystal (1DPC) with symmetric semi-infinite period number and a central defect layer are deduced, which are valid for the defect 1DPC consisting of materials with arbitrary frequency-dependence. Based upon them, we found that the eigenfrequency of defect state is red-shifted with the increasing geometry thickness of defect layer in right-handed materials. On the contrary, the frequency is blue-shifted when the defect layer is a left-handed material. Moreover, the defect state is more localized for symmetric semi-infinite period structures consisting of metamaterials than those of conventional right-handed materials.

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