Effect of the elliptic rods orientations on the asymmetric light transmission in photonic crystals

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In this work, we report a novel design of a photonic crystal utilizing elliptic rods. The two-dimensional (2D) photonic crystal consists of an asymmetric distribution of unit cells to ensure the one-way transmission of light. Analysis performed indicated that the orientation of the ellipse along the major and minor axis has an influence on the shift of the transmission. In particular, this results in shift of the transmission towards high frequencies and subsequent oscillation of its magnitude. The peak of the transmission band was also found to be strongly influenced by the orientation angle, θ. It has been demonstrated that the strong asymmetric propagation properties of the proposed photonic crystal structure enables the switching of incident light from one direction to another. The proposed structure may be applied as a building block to integrated photonics applications.
Original languageEnglish
Pages (from-to)147-152
Number of pages6
JournalOptics Communications
Early online date3 Feb 2017
Publication statusPublished - 1 Jun 2017


  • Unidirectional light
  • FDTD method
  • Two-dimensional square photonic crystal

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