Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects

2008/02/24 by B. Edwards, Brian Edwards, A. Alù +5 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Bending #Cutoff #Cutoff frequency #Metamaterial #Metamaterials and Metasurfaces Applications #Permittivity #Plasmonic and Surface Plasmon Research #Quantum optics and atomic interactions #Quantum tunnelling #Reflection (computer programming) #Waveguide #cond-mat.mtrl-sci

paper · pdf · doi:10.1063/1.3074506

13 pages, 6 figures

arxiv created 2008/02/24 · openalex publication_date 2009/02/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Following our recent theoretical and experimental results that show how zero-permittivity metamaterials may provide anomalous tunneling and energy squeezing through ultranarrow waveguide channels, here we report an experimental investigation of the bending features relative to this counterintuitive resonant effect. We generate the required effectively zero permittivity using a waveguide operating at the cutoff of its dominant mode, and we show how sharp and narrow bends may be inserted within the propagation channel without causing any sensible reflection or loss and without affecting its tunneling properties.

Citations

• Circuit verification of tunneling effect in zero permittivity medium
• Transmission-line analysis ofε-near-zero–filled narrow channels
• Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern

Cited by

• Sampling and squeezing electromagnetic waves through subwavelength ultranarrow regions or openings
• Perfect transmission invisibility for waveguides with sound hard walls