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

Abstract

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.

18 pages, 6 figures

References in corpus (3)

• Determination of Effective Permittivity and Permeability of Metamaterials from Reflection and Transmission Coefficients
• Negative Refraction and Left-handed electromagnetism in Microwave Photonic Crystals
• Electrodynamics of metallic photonic crystals and problem of left-handed materials

Cited by in corpus (4)

• Non-left-handed transmission and bianisotropic effect in a [pi]-shaped metallic metamaterials
• Resonance amplification of left-handed transmission at optical frequencies by stimulated emission of radiation in active metamaterials
• Negative-Index Refraction in a Lamellar Composite with Alternating Single Negative Layers
• Clausius-Mossotti Relation Revisited: Media with Electric and Magnetic Response