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      Spatial filtering using dielectric photonic crystals at beam-type excitation

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      Author
      Colak, E.
      Cakmak, A. O.
      Serebryannikov, A. E.
      Özbay, Ekmel
      Date
      2010-12-06
      Source Title
      Journal of Applied Physics
      Print ISSN
      0021-8979
      Publisher
      American Institute of Physics
      Volume
      108
      Issue
      11
      Pages
      113106-1 - 113106-8
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Spatial filtering is demonstrated at beam-type excitations by utilizing finite thickness slabs of two-dimensional dielectric photonic crystals (PCs) showing exotic Fabry-Perot resonances that are preserved over a wide range of variation of the incidence angle. Bandstop and dual-bandpass filtering effects are illustrated theoretically and the corresponding filters are validated in the microwave experiments by using square-lattice PCs. It is shown that the basic transmission features that were observed earlier for a plane-wave illumination are also recognizable at beam-type excitations. The proposed spatial filtering mechanism exhibits directional beaming. The desired widths and the locations of the passbands and stopbands are attainable in the angle domain with a proper choice of the operating frequency for the given excitation characteristics.
      Keywords
      A-plane
      Angle domains
      Band pass filtering
      Band-stop
      Dielectric photonic crystals
      Fabry-Perot resonances
      Finite thickness
      Incidence angles
      Microwave experiments
      Operating frequency
      Spatial filterings
      Square-lattice
      Photonic crystals
      Permalink
      http://hdl.handle.net/11693/22078
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.3498810
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
      • Nanotechnology Research Center (NANOTAM) 1006
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