Departmental Papers (ESE)


Utilizing a microwave setup, we experimentally verify our recently developed theory of energy squeezing and tunneling [Phys. Rev. Lett. 97, 157403 (2006)] through an ultranarrow waveguide channel that mimics zero-permittivity properties. Exploiting the infinite phase velocity supported by a waveguide transition section at cutoff, we test our theory of tunneling in this zero-permittivity region without use of resonant inclusions. This "supercoupling" is shown to have unique anomalous properties: an almost uniform phase along the narrow channel and weak dependence over its geometry.

Document Type

Journal Article

Date of this Version

January 2008


Copyright American Physical Society. Published in Physical Review Letters, Volume 100, Issue 3, Article 033903, January 2008, 4 pages.
Publisher URL:


electromagnetic wave propagation, radiowave propagation, optical waveguides, couplers, and arrays (integrated optics), electromagnetic (nonlaser) radiation interactions with plasma, plasma interactions with antennas, plasma-filled waveguides



Date Posted: 20 March 2008

This document has been peer reviewed.