J4 ›› 2009, Vol. 26 ›› Issue (3): 342-345.

• Quantum Optics • Previous Articles     Next Articles

Defect modes of quasiperiodic one-dimensional photonic crystals

WU Ji-Jiang, GAO Jin-Xia   

  1. Computing Physics Institute of College of Physics,Shandong University of Technology,Zibo 255049,China
  • Received:2008-09-01 Revised:2008-10-06 Published:2009-05-28 Online:2009-05-07

Abstract:

The light wave propagation in quasiperiodic one-dimensional photonic crystals with the doped defect and the substitutional defect is studied by means of the transfer-matrix method. The results showed that defect modes appear in the bandgaps of this kind of quasiperiodic one-dimensional photonic crystals with defect, similar to the traditional periodic structure photonic crystals with defect. The defect modes caused by the doped defect and the substitutional defect are similar to each other. The creation of defect modes can broaden the bandgaps and the characteristics of defect modes are greatly related with the position and optical thickness of the defect. The wavelength of defect modes shifts in the direction of long-wavelength with the optical thickness of the defect layer increasing. Those offer a useful reference for the design of related photonic devices.

Key words: optoelectronic, defect mode, transfer-matrix method, photonic crystals, quasiperiodic structure

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