Reflectionless design of optical elements using impedance-tunable transformation optics

被引：12

作者：

Cao, Jun ^{[1
,2
]}

Zhang, Lifa ^{[3
]}

Yan, Senlin ^{[2
]}

Sun, Xiaohan ^{[1
]}

机构：

[1] Southeast Univ, Dept Elect Engn, Natl Res Ctr Opt Sensing Commun Integrated Networ, Nanjing 210096, Jiangsu, Peoples R China

[2] Nanjing Xiaozhuang Univ, Dept Phys, Nanjing 211171, Jiangsu, Peoples R China

[3] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 19期

关键词：

LENS;

D O I：

10.1063/1.4874623

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a strategy to remove the reflections resulted from the finite embedded transformation-optical design by proposing a theory of impedance-tunable transformation optics, on which the functions of impedance coefficients can be derived in the original space without changing the refractive index. Based on the approach, two-dimensional reflectionless beam compressors/expanders, bends, shifters, and splitters are designed using the modified anisotropic medium. It is found that the reflections can be removed in magnetic response materials for TE polarization or dielectric response materials for TM polarization. The numerical simulations confirm that various reflectionless optical elements can be realized in the pure transformation optics. The proposed method can be generalized to three-dimensional cases and can be applied to other transformation-optical designs. (C) 2014 AIP Publishing LLC.

引用

页数：5

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