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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 13467–13478

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

Cheng-Wei Qiu, Li Hu, Baile Zhang, Bae-Ian Wu, Steven G. Johnson, and John D. Joannopoulos  »View Author Affiliations


Optics Express, Vol. 17, Issue 16, pp. 13467-13478 (2009)
http://dx.doi.org/10.1364/OE.17.013467


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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

OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(230.3205) Optical devices : Invisibility cloaks
(290.5839) Scattering : Scattering, invisibility

ToC Category:
Physical Optics

History
Original Manuscript: May 12, 2009
Revised Manuscript: July 7, 2009
Manuscript Accepted: July 10, 2009
Published: July 21, 2009

Citation
Chengwei Qiu, Li Hu, Baile Zhang, Bae-Ian Wu, Steven G. Johnson, and John D. Joannopoulos, "Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings," Opt. Express 17, 13467-13478 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-16-13467


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