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Numerical simulations of negative-index refraction in wedge-shaped metamaterials

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arxiv physics/0508067 v1 pith:DHASKAIA submitted 2005-08-10 physics.optics physics.comp-ph

Numerical simulations of negative-index refraction in wedge-shaped metamaterials

Z. G. Dong , S. N. Zhu , H. Liu , J. Zhu , W.Cao This is my paper
classification physics.optics physics.comp-ph
keywords bandrefractionbandsfrequencyleft-handednegativeresultssnell
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A wedge-shaped structure made of split-ring resonators (SRR) and wires is numerically simulated to evaluate its refraction behavior. Four frequency bands, namely, the stop band, left-handed band, ultralow-index band, and positive-index band, are distinguished according to the refracted field distributions. Negative phase velocity inside the wedge is demonstrated in the left-handed band and the Snell's law is conformed in terms of its refraction behaviors in different frequency bands. Our results confirmed that negative index of refraction indeed exists in such a composite metamaterial and also provided a convincing support to the results of previous Snell's law experiments.

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