Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings

被引：46

作者：

Qiu, Cheng-Wei ^{[1
,2
]}

Hu, Li ^{[2
]}

Zhang, Baile ^{[1
]}

Wu, Bae-Ian ^{[1
]}

Johnson, Steven G. ^{[3
]}

Joannopoulos, John D. ^{[1
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[3] MIT, Dept Math, Cambridge, MA 02139 USA

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 16期

关键词：

SCATTERING;

D O I：

10.1364/OE.17.013467

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two novel classes of spherical invisibility cloaks based on nonlinear transformation have been studied. The cloaking characteristics are presented by segmenting the nonlinear transformation based spherical cloak into concentric isotropic homogeneous coatings. Detailed investigations of the optimal discretization (e.g., thickness control of each layer, nonlinear factor, etc.) are presented for both linear and nonlinear spherical cloaks and their effects on invisibility performance are also discussed. The cloaking properties and our choice of optimal segmentation are verified by the numerical simulation of not only near-field electric-field distribution but also the far-field radar cross section (RCS). (C) 2009 Optical Society of America

引用

页码：13467 / 13478

页数：12