Frequency splitter based on the directional emission from surface modes in dielectric photonic crystal structures.

نویسندگان

  • Anna C Tasolamprou
  • Lei Zhang
  • Maria Kafesaki
  • Thomas Koschny
  • Costas M Soukoulis
چکیده

We demonstrate the numerical design and the experimental validation of frequency dependent directional emission from a dielectric photonic crystal structure. The wave propagates through a photonic crystal line-defect waveguide, while a surface layer at the termination of the photonic crystal enables the excitation of surface modes and a subsequent grating layer transforms the surface energy into outgoing propagating waves of the form of a directional beam. The angle of the beam is controlled by the frequency and the structure operates as a frequency splitter in the intermediate and far field region.

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عنوان ژورنال:
  • Optics express

دوره 23 11  شماره 

صفحات  -

تاریخ انتشار 2015