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AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorsIgor I. Smolyaninov, Vera N. Smolyaninova, Alexander V. Kildishev, Vladimir M. Shalaev
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A method for carrying out electromagnetic cloaking using 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 in the visible frequency range, which is difficult to achieve by other means. We apply this technique to electromagnetic cloaking. A broadband, two-dimensional, electromagnetic cloaking is demonstrated in the visible frequency range on a scale ˜100 times the wavelength. Surprisingly, the classic geometry of Newton rings is suited for an experimental demonstration of this effect.
A method for carrying out electromagnetic cloaking comprising a step of using a tapered plasmonic waveguide to achieve broadband, two-dimensional electromagnetic cloaking in a visible frequency range by adiabatically varying a gap d of said tapered waveguide, wherein said tapered waveguide guides light within space defined by two surfaces that contact each other at a point and have the gap d therebetween described by the following equation
Dependencies are inferred from the claim text.