Large forbidden angles for a two-dimensional photonic crystal of connected-honeycomb lattice

Ya Chih Tsai, Jian Hao Wong, Shih-Chuan Gou

Research output: Contribution to journalArticle

4 Citations (Scopus)


The off-plane band structures of a two-dimensional photonic crystals of connected-honeycomb lattice are calculated by the plane-wave expansion method. To investigate how the band gaps vary with the off-plane angle, an effective refractive-index model is employed to work out the corresponding angular gap map. We find that the connected-honeycomb lattice can provide forbidden angles taking up as much as 58.6% of the solid angle. The result will be helpful in the design of photonics devices incorporating two-dimensional photonic crystal structures.

Original languageEnglish
Pages (from-to)400-404
Number of pages5
JournalOptics Communications
Issue number3
Publication statusPublished - 2010 Feb 1


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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