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Electromagnetic analysis of cylindrical cloaks of an arbitrary cross section

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Abstract

We extend the design of radially symmetric invisibility cloaks through transformation optics as proposed by Pendry et al. [Science 312, 1780 (2006)] to coated cylinders of an arbitrary cross section. The validity of our Fourier-based approach is confirmed by both analytical and numerical results for a cloak displaying a nonconvex cross section of varying thickness. In the former case, we evaluate the Green’s function of a line source in the transformed coordinates. In the latter case, we implement a full-wave finite-element model for a cylindrical antenna radiating a p-polarized electric field in the presence of a F-shaped lossy object surrounded by the cloak.

© 2008 Optical Society of America

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