Coordinate transformation based design of confined metamaterial structures

Details Coordinate transformation based design of confined metamaterial structures Coordinate transformation based design of confined metamaterial structures

2008-07-26

arxiv.org/abs/0807.4215v2

Physics

Optics

The previous version has been revised and considerably expanded

Scientific paper

10.1103/PhysRevB.79.085103

The coordinate transformation method is applied to bounded domains to design metamaterial devices for steering spatially confined electromagnetic fields. Both waveguide and free-space beam applications are considered as these are analogous within the present approach. In particular, we describe devices that bend the propagation direction and squeeze confined electromagnetic fields. Two approaches in non-magnetic realization of these structures are examined. The first is based on using a reduced set of material parameters, and the second on finding non-magnetic transformation media. It is shown that transverse-magnetic fields can be bent or squeezed to an arbitrary extent and without reflection using only dielectric structures.

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