Localized gap-edge fields of one-dimensional photonic crystals with an ε -negative and a μ -negative defect

Haitao Jiang*, Hong Chen, Shi Yao ZHU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

We study the properties of one-dimensional photonic crystals with an ε -negative and a μ -negative defect. With suitable parameters, the pair defect is equivalent to a transparent material with zero effective refractive index. This special pair defect has no influence on the spectral gap formed by the interference of propagating waves in positive-refractive-index materials. However, the field distribution is modified noticeably by the decaying wave in the pair defect. Particularly, the gap-edge field can be a highly localized wave instead of the usual standing wave as the size of the pair defect increases. The localized gap-edge field can reduce the switching thresholds for bistability greatly when Kerr-type nonlinear μ -negative material is involved. A nonideal model when the ε -negative and μ -negative materials are dispersive and lossy is used to verify the unusual properties.

Original languageEnglish
Article number046601
JournalPhysical Review E
Volume73
Issue number4
DOIs
Publication statusPublished - 2006

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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