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Paired Cut-Wire Arrays for Enhanced Transmission of Transverse-Electric Fields Through Subwavelength Slits in a Thin Metallic Screen

It has recently been shown that the transmission of electromagnetic fields through subwavelength slits (parallel to the electric field direction) in a thin metallic screen can be greatly enhanced by covering one side of the screen with a metallic cut-wire array laid on a dielectric layer. In this Le...

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Published in:IEEE antennas and wireless propagation letters 2010, Vol.9, p.641-644
Main Authors: Gallina, Ilaria, Castaldi, Giuseppe, Galdi, Vincenzo, Di Gennaro, Emiliano, Andreone, Antonello
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Language:English
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description It has recently been shown that the transmission of electromagnetic fields through subwavelength slits (parallel to the electric field direction) in a thin metallic screen can be greatly enhanced by covering one side of the screen with a metallic cut-wire array laid on a dielectric layer. In this Letter, we show that a richer phenomenology (which involves both electric- and magnetic-type resonances) can be attained by pairing a second cut-wire array at the other side of the screen. Via a full-wave comprehensive parametric study, we illustrate the underlying mechanisms and explore the additional degrees of freedom endowed, as well as their possible implications in the engineering of enhanced transmission phenomena.
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ispartof IEEE antennas and wireless propagation letters, 2010, Vol.9, p.641-644
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source IEEE Electronic Library (IEL) Journals
subjects Antennas
Apertures
Arrays
Couplings
Cut-wire arrays
Degrees of freedom
Dielectrics
Electromagnetic fields
Electromagnetic waveguides
enhanced optical transmission
Geometry
Mathematical analysis
Optical arrays
Optical sensors
Optical waveguides
Screens
slit arrays
Slits
Tellurium
Wires
title Paired Cut-Wire Arrays for Enhanced Transmission of Transverse-Electric Fields Through Subwavelength Slits in a Thin Metallic Screen
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