Transmission-Line Analysis of Epsilon-Near-Zero (ENZ)-Filled Narrow Channels

Details Transmission-Line Analysis of Epsilon-Near-Zero (ENZ)-Filled Narrow Channels Transmission-Line Analysis of Epsilon-Near-Zero (ENZ)-Filled Narrow Channels

2008-04-22

arxiv.org/abs/0804.3533v1

Physics

Condensed Matter

Materials Science

35 pages, 9 figures

Scientific paper

10.1103/PhysRevE.78.016604

Following our recent interest in metamaterial-based devices supporting resonant tunneling, energy squeezing and supercoupling through narrow waveguide channels and bends, here we analyze the fundamental physical mechanisms behind this phenomenon using a transmission-line model. These theoretical findings extend our theory, allowing us to take fully into account frequency dispersion and losses and revealing the substantial differences between this unique tunneling phenomenon and higher-frequency Fabry-Perot resonances. Moreover, they represent the foundations for other possibilities to realize tunneling through arbitrary waveguide bends, both in E and H planes of polarization, waveguide connections and sharp abruptions and to obtain analogous effects with geometries arguably simpler to realize.

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