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      A transparent 90 degree polarization rotator by combining chirality and electromagnetic wave tunneling

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      Author
      Mutlu, M.
      Özbay, Ekmel
      Date
      2012-02-03
      Source Title
      Applied Physics Letters
      Print ISSN
      0003-6951
      Publisher
      AIP Publishing
      Volume
      100
      Issue
      5
      Pages
      051909-1 - 051909-4
      Language
      English
      Type
      Article
      Item Usage Stats
      155
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      195
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      Abstract
      A three-layer chiral metamaterial is constructed by using two layers of four mutually rotated resonators and a subwavelength mesh sandwiched symmetrically between these layers. The resulting structure is an ultrathin, transparent, and polarization angle independent 90 degrees polarization rotator. Due to the electromagnetic tunneling effect exerted by the negative permittivity mesh, a cross-polarization conversion efficiency of 99% and 93% is achieved numerically and experimentally. The structure is modeled using the effective medium theory and then the transfer matrix method is applied to demonstrate the existence of the tunneling resonance theoretically.
      Keywords
      Transmission
      Permittivity
      Metamaterial
      Permalink
      http://hdl.handle.net/11693/12342
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.3682591
      Collections
      • Department of Electrical and Electronics Engineering 3613
      • Nanotechnology Research Center (NANOTAM) 1038
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