Defect Modes in Two-Dimensional Triangular Photonic Crystals.

  • Feng Xiao–Ping
    Institute of Industrial Science, University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106, Japan
  • Arakawa Yasuhiko
    Institute of Industrial Science, University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106, Japan

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  • Defect Modes in Two-Dimensional Triangu

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We propose a simple method of making defects in two-dimensional photonic crystals by radius modification and analyzed energy levels of such defects obtained by the supercell method. In a triangular lattice of the semiconductor-rods-in-air structure, it was found that both a single sharp acceptor level and a single sharp donor level can be achieved with a defect bandwidth of about 5% of the band gap for E-polarized in-plane waves.

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