A FDTD method for calculating defect modes in a two-dimensional photonic crystal consisting of anisotropic cylinders

Fei Zhuang*, San Shui Xiao, Jiang Ping He, Sai Ling He

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A finite differece in time domain(FDTD) method is employed to calculate defect modes in a two-dimensional photonic crystal consisting of anisotropic cylinders of tellurium. In order to obtain a defect mode inside the complete band gap, we adjust the radius Rd of the central defect and radius Rn of the neighboring defects. It is shown that the defect modes for the E-polarization are not sensitive to Rn, while the resonance frequency for H-polarization varies regularly as Rn changes. When the filling fraction f = 0.4 (R = 0.3568a), Rd = 0.55a and Rn = 0.26a, the defect mode has the same resonance frequency ω0 = 0.2466ωe (where ωe = 2πc/a, a, c being lattice constants) for both E- and H-polarization.

Original languageEnglish
JournalWuli Xuebao/Acta Physica Sinica
Volume51
Issue number9
Pages (from-to)2171-2172
Number of pages2
ISSN1000-3290
Publication statusPublished - Sep 2002
Externally publishedYes

Keywords

  • Anisotropic
  • Defect mode
  • FDTD
  • Photonic crystal

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