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Opt Lett. 2007 May 1;32(9):1069-71.

Electromagnetic analysis of cylindrical invisibility cloaks and the mirage effect.

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  • 1Institut Fresnel, UMR CNRS 6133, University Aix-Marseille, France.

Abstract

We present a finite-element analysis of a diffraction problem involving a coated cylinder enabling the electromagnetic cloaking of a lossy object with sharp wedges located within its core. The coating consists of a heterogeneous anisotropic material deduced from a geometrical transformation as first proposed by Pendry [Science 312, 1780 (2006)]. We analyze the electromagnetic response of the cloak in the presence of an electric line source in p polarization and a loop of magnetic current in s polarization. We find that the electromagnetic field radiated by such a source located a fraction of a wavelength from the cloak is perturbed by less than 1%. When the source lies in the coating, it seems to radiate from a shifted location.

PMID:
17410238
[PubMed]
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