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Phys Rev Lett. 2009 May 29;102(21):213901. Epub 2009 May 27.

Anisotropic metamaterials emulated by tapered waveguides: application to optical cloaking.

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Advanced Technologies, BAE Systems, 1250 24 Street, NW, Washington, DC 20037, USA.


We demonstrate that metamaterial devices requiring anisotropic dielectric permittivity and magnetic permeability may be emulated by specially designed tapered waveguides. This approach leads to low-loss, broadband performance. Based on this technique, we demonstrate broadband electromagnetic cloaking in the visible frequency range on a scale approximately 100 times larger than the wavelength.

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