Realizing bending waveguides with anisotropic epsilon-near-zero metamaterials

Abstract

We study metamaterials with an anisotropic effective permittivity tensor in which one component is near zero. We find that such an anisotropic metamaterial can be used to control wave propagation and construct almost perfect bending waveguides with a high transmission rate (>95%). This interesting effect originates in the power flow redistribution by the surface waves on the input and output interfaces, which smoothly matches with the propagating modes inside the metamaterial waveguide. We also find that waves in such anisotropic epsilon-near-zero materials can be reflected by small-sized perfect magnetic conductor defects. Numerical calculations have been performed to confirm the above effects.

References in corpus (8)

• Epsilon-Near-Zero (ENZ) Metamaterials and Electromagnetic Sources: Tailoring the Radiation Phase Pattern
• Theory of Supercoupling, Squeezing Wave Energy, and Field Confinement in Narrow Channels and Tight Bends Using Epsilon-Near-Zero Metamaterials
• Super-reflection and Cloaking Based on Zero Index Metamaterial
• Dielectric Sensing in Epsilon-Near-Zero Narrow Waveguide Channels
• Transmission-Line Analysis of Epsilon-Near-Zero (ENZ)-Filled Narrow Channels
• Total reflection and transmission by epsilon-near-zero metamaterials with defects
• Reflectionless Sharp Bends and Corners in Waveguides Using Epsilon-Near-Zero Effects
• Exotic leaky wave radiation from anisotropic epsilon near zero metamaterials

Cited by in corpus (5)

• Hyperbolic Metamaterials: From Dispersion Manipulation to Application
• Semi-Dirac dispersion relation in photonic crystals
• Strong Purcell effect in anisotropic $\epsilon$-near-zero metamaterials
• Total transmission and total reflection of acoustic wave by zero index metamaterials loaded with general solid defects
• Improving the Transmittance of an Epsilon-Near-Zero based Wavefront Shaper