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      Unidirectional transmission in photonic-crystal gratings at beam-type illumination

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      Author
      Cakmak, A.O.
      Colak, E.
      Serebryannikov, A.E.
      Özbay, Ekmel
      Date
      2010
      Source Title
      Optics Express
      Print ISSN
      10944087
      Publisher
      Optical Society of American (OSA)
      Volume
      18
      Issue
      21
      Pages
      22283 - 22298
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Unidirectional transmission is studied theoretically and experimentally for the gratings with one-side corrugations (non-symmetric gratings), which are based on two-dimensional photonic crystals composed of alumina rods. The unidirectional transmission appears at a fixed angle of incidence as a combined effect of the peculiar dispersion features of the photonic crystal and the properly designed corrugations. It is shown that the basic unidirectional transmission characteristics, which are observed at a plane-wave illumination, are preserved at Gaussian-beam and horn antenna illuminations. The main attention is paid to the single-beam unidirectional regime, which is associated with the strong directional selectivity arising due to the first negative diffraction order. An additional degree of freedom for controlling the transmission of the electromagnetic waves is obtained by making use of the asymmetric corrugations at the photonic crystal interface. © 2010 Optical Society of America.
      Keywords
      Electromagnetic waves
      Gaussian beams
      A-plane
      Alumina rods
      Combined effect
      Degree of freedom
      Diffraction orders
      Directional selectivity
      Fixed angles
      Photonic crystal interfaces
      Single-beam
      Transmission characteristics
      Two-dimensional photonic crystals
      Photonic crystals
      algorithm
      article
      computer simulation
      crystallization
      electron
      equipment design
      normal distribution
      optics
      photon
      radiation
      Algorithms
      Computer Simulation
      Crystallization
      Electrons
      Equipment Design
      Normal Distribution
      Optics and Photonics
      Photons
      Radiation
      Permalink
      http://hdl.handle.net/11693/22178
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OE.18.022283
      Collections
      • Department of Electrical and Electronics Engineering 3339
      • Department of Physics 2150
      • Nanotechnology Research Center 873

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