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      Multiband one-way polarization conversion in complementary split-ring resonator based structures by combining chirality and tunneling

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      Author
      Serebryannikov, A. E.
      Beruete, M.
      Mutlu, M.
      Özbay, Ekmel
      Date
      2015
      Source Title
      Optics Express
      Print ISSN
      1094-4087
      Publisher
      OSA - The Optical Society
      Volume
      23
      Issue
      10
      Pages
      13517 - 13529
      Language
      English
      Type
      Article
      Item Usage Stats
      130
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      99
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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
      Chirality
      Optical 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/11693/21937
      Published Version (Please cite this version)
      https://doi.org/10.1364/OE.23.013517
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      • Nanotechnology Research Center (NANOTAM) 1038
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