Multiband one-way polarization conversion in complementary split-ring resonator based structures by combining chirality and tunneling
Fecha
2015Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1364/OE.23.013517
Resumen
Multiband one-way polarization conversion and strong
asymmetry in transmission inspired by it are demonstrated in ultrathin
sandwiched structures that comprise two twisted aperture-type arrays of
complementary split-ring resonators (CSRRs), metallic mesh, and dielectric
layers. The basic features of the resulting mechanism originate from the
common effect of chirality and tunneling. The emph ...
[++]
Multiband one-way polarization conversion and strong
asymmetry in transmission inspired by it are demonstrated in ultrathin
sandwiched structures that comprise two twisted aperture-type arrays of
complementary split-ring resonators (CSRRs), metallic mesh, and dielectric
layers. The basic features of the resulting mechanism originate from the
common effect of chirality and tunneling. The emphasis is put on the
(nearly) perfect polarization conversion of linear incident polarization into
the orthogonal one and related diodelike asymmetric transmission within
multiple narrow bands. Desired polarization conversion can be obtained at
several resonances for one of the two opposite incidence directions, whereas
transmission is fully blocked for the other one. The resonances, at which the
(nearly) perfect conversion takes place, are expected to be inherited from
similar structures with parallel, i.e., not rotated CSRR arrays that do not
enable chirality and, thus, polarization conversion. It is found that the basic
transmission and polarization conversion features and, thus, the dominant
physics are rather general, enabling efficient engineering of such structures.
The lowest-frequency resonance can be obtained in structures made of
conventional materials with total thickness less than λ 50/ and up to ten
such resonances can correspond to thickness less than λ 20/ . [--]
Materias
Multiband one-way polarization conversion,
Complementary split-ring resonators,
Chirality,
Tunneling
Editor
Optical Society of America
Publicado en
Optics Express, Vol. 23, Issue 10, pp. 13517-13529 (2015)
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
This work is supported by the projects DPT-HAMIT, ESF-EPIGRAT, and NATO-SET-181,
by TUBITAK under Project Nos., 107A004, 109A015, 109E301, and 110T306, and by
Spanish Government under contract Consolider Engineering Metamaterials CSD2008-00066
and Contract No. TEC2011-28664-C02-01. Contribution of A.E.S. has partially been
supported by TUBITAK in the framework of the Visiting Reseracher programme and by ESF
in the framework of RNP Newfocus. M.B. acknowledges funding by the Spanish Government
under the research contract program Ramón y Cajal RYC-2011-0822. E.O. acknowledges
partial support from the Turkish Academy of Sciences.