Plasmonic wormholes: Defeating the early bird

Details Plasmonic wormholes: Defeating the early bird Plasmonic wormholes: Defeating the early bird

2011-02-11

arxiv.org/abs/1102.2372v1

Physics

Optics

4 figures

Scientific paper

We describe two types of toroidal metamaterials which are invisible for surface plasmon polaritons (SPPs) propagating on a metal surface. The former is a toroidal handlebody bridging remote holes on the surface: it essentially works as a plasmonic counterpart of electromagnetic wormholes. The latter is a toroidal ring lying on the metal surface: this bridges two disconnected metal surfaces i.e. it connects a thin metal cylinder to a at metal surface with a hole. Full-wave numerical simulations demonstrate that an electromagnetic ?eld propagating inside these metamaterials does not disturb the propagation of SPPs at the metal surface. A multilayered design of these devices is proposed, based on e?ective medium theory for a set of reduced parameters: The former metamaterial requires homogeneous isotropic magnetic layers, while the latter requires dielectric layers.

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