Effectiveness and improvement of cylindrical cloaking with the SHS lining

Details Effectiveness and improvement of cylindrical cloaking with the SHS lining Effectiveness and improvement of cylindrical cloaking with the SHS lining

2007-07-09

arxiv.org/abs/0707.1315v1

Optics Express, Vol. 15, Issue 20 (2007), 12717-12734

Physics

Optics

22 pages, 2 color figures

Scientific paper

10.1364/OE.15.012717

We analyze, both analytically and numerically, the effectiveness of cloaking an infinite cylinder from observations by electromagnetic waves in three dimensions. We show that, as truncated approximations of the ideal permittivity and permeability tensors tend towards the singular ideal cloaking fields, so that the anisotropy ratio tends to infinity, the $D$ and $B$ fields blow up near the cloaking surface. We also consider cloaking with and without the SHS (soft-and-hard surface) lining. We demonstrate numerically that cloaking is significantly improved by the SHS lining, with both the far field of the scattered wave significantly reduced and the blow up of $D$ and $B$ prevented.

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