Defect modes caused by twinning in one-dimensional photonic crystals
Defect modes caused by twinning in one-dimensional photonic crystals
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DOI：
10.1364/josab.21.000548
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发表时间：
2004-03-01
影响因子：
1.9
通讯作者：
Kuzel, P
中科院分区：
文献类型：
--
作者：
Nemec, H;Duvillaret, L;Kuzel, P
用传递矩阵法研究了电磁波在具有双缺陷的一维光子晶体中的传播。双缺陷是一种周期性断裂，其中一半光子结构是另一半光子结构的镜像。这项工作是在具有介电和磁性质的各向同性材料组成的光子结构的一般框架下完成的。考虑了斜入射电磁波在结构上的两种极化。导出了缺陷模频率和缺陷内电磁场增强的解析表达式。特别地，我们讨论了具有两层基本单元的光子晶体结构的缺陷能级调谐的可能性。(C) 2004美国光学学会
Propagation of electromagnetic waves in a one-dimensional photonic crystal with a twin-defect-a periodicity break where one half of the photonic structure is a mirror image of the other one-is studied using a transfer-matrix method. This work is done in the general framework of photonic structures composed of isotropic materials exhibiting both dielectric and magnetic properties. Both polarizations of electromagnetic waves impinging at oblique incidence on the structure are considered. We derive analytical expressions for the frequency of defect modes and for the enhancement of the electromagnetic field inside the defect. In particular, we discuss possibilities of tuning of defect levels for a photonic crystal structure with a two-layer elementary cell. (C) 2004 Optical Society of America