Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.17.013467
Title: Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings
Authors: Qiu, C.-W. 
Hu, L. 
Zhang, B.
Wu, B.-I.
Johnson, S.G.
Joannopoulos, J.D.
Issue Date: 3-Aug-2009
Source: Qiu, C.-W., Hu, L., Zhang, B., Wu, B.-I., Johnson, S.G., Joannopoulos, J.D. (2009-08-03). Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings. Optics Express 17 (16) : 13467-13478. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.17.013467
Abstract: 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). © 2009 Optical Society of America.
Source Title: Optics Express
URI: http://scholarbank.nus.edu.sg/handle/10635/57469
ISSN: 10944087
DOI: 10.1364/OE.17.013467
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