Multiband one-way polarization conversion in complementary split-ring resonator based structures by combining chirality and tunneling
Author
Serebryannikov, A. E.
Beruete, M.
Mutlu, M.
Özbay, Ekmel
Date
2015Source Title
Optics Express
Print ISSN
1094-4087
Publisher
OSA - The Optical Society
Volume
23
Issue
10
Pages
13517 - 13529
Language
English
Type
ArticleItem Usage Stats
130
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Abstract
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 . ©2015 Optical Society of America.
Keywords
ChiralityOptical resonators
Resonance
Resonators
Ring gages
Asymmetric transmissions
Complementary split ring resonators
Conventional materials
Dielectric layer
Frequency resonance
Incident polarization
Polarization conversion
Sandwiched structure
Polarization
Permalink
http://hdl.handle.net/11693/21937Published Version (Please cite this version)
https://doi.org/10.1364/OE.23.013517Collections
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