Defect modes properties in periodic lossy multilayer containing negative index materials with symmetric and asymmetric geometric structures

Alireza Aghajamali, Behnam Javanmardi, Mahmood Barati, Chien Jang Wu

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In this paper, the characteristic matrix method is used to study the propagation of electromagnetic waves through one-dimensional lossy photonic crystals composed of negative and positive refractive index material layers with symmetric and asymmetric geometric structures with a defect layer at the center of the structure. First, the positive index material defect layer is considered, and the effects of the polarization and the angle of incidence on the defect mode in the transmission spectra of the both structures are investigated. The results show that the number of the defect modes in the transmission spectra depends on the geometry (symmetric or asymmetric) of the structure. In addition, it is shown that the defect mode frequency increases as the angle of incidence increases. This property is independent of the geometry of the structure. Then, for normal incidence, the negative index material defect layer is considered, and the properties of defect modes for both structures are investigated. The results can lead to designing new types of transmission narrow filters.

Original languageEnglish
Pages (from-to)839-843
Number of pages5
JournalOptik
Volume125
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

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Keywords

  • Defect mode
  • Negative index material
  • One-dimensional photonic crystal

ASJC Scopus subject areas

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

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