Control of planar nonlinear guided waves and spatial solitons with a left-handed medium

Details Control of planar nonlinear guided waves and spatial solitons with a left-handed medium Control of planar nonlinear guided waves and spatial solitons with a left-handed medium

2006-03-07

arxiv.org/abs/cond-mat/0603159v1

Physics

Condensed Matter

Materials Science

19 pages, 11 figures

Scientific paper

10.1088/1464-4258/7/2/008

The evidence that double negative media, with an effective negative permittivity, and an effective negative permeability, can be manufactured to operate at frequencies ranging from microwave to optical is ushering in a new era of metamaterials. They are referred to here as 'left-handed', even though a variety of names is evident from the literature. In anticipation of a demand for highly structured integrated practical waveguides, this paper addresses the impact of this type of medium upon waveguides that can be also nonlinear. After an interesting historical overview and an exposure of some straightforward concepts, a planar guide is investigated, in which the waveguide is a slab consisting of a left-handed medium sandwiched between a substrate and cladding that are simple dielectrics. The substrate and cladding display a Kerr-type nonlinear response. Because of the nonlinear properties of the Kerr media, the power flow direction can be controlled by the intensity of the electric field. A comprehensive finite-difference-time-domain (FDTD) analysis is presented that concentrates upon spatial soliton behaviour. An interesting soliton-lens arrangement is investigated that lends itself to a novel cancellation effect.

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