Simulations of Realizable Photonic Bandgap Structures with High Refractive Contrast

Abstract

The transfer matrix method (TMM) software (Translight, A. Reynolds) was used to evaluate the photonic band gap (PBG) properties of the periodic arrangement of high permittivity ferroelectric composite (40 wt% Ba0.45Sr0.55TiO3/60 wt% MgO composite, epsilon(sub R) 80, tan delta = 0.0041 at 10 GHz) in air (or Styrofoam, epsilon(sub R) ^ 1) matrix compared to a lower permittivity material (Al2O3, epsilon(sub R) = 11.54, tan delta = 0.00003 at 10 GHz) in air. The periodic structures investigated included a one-dimensional (1D) stack and a three-dimensional (3D) face centered cubic (FCC) opal structure. The transmission spectrum was calculated for the normalized frequency for all incident angles for each structure. The results show that the bandgaps frequency increased and the bandgap width increased with increased permittivity. The effects of orientation of defects in the opal crystal were investigated. It was found by introducing defects propagation bands were introduced. It was concluded that a full PBG is possible with the high permittivity material.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2002
Accession Number
ADP012680

Entities

People

  • Bonnie Gersten
  • Jennifer Synowczynski

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Band Gaps
  • Composite Materials
  • Contrast
  • Crystal Lattices
  • Crystal Structure
  • Dielectrics
  • Electric Fields
  • Electromagnetic Radiation
  • Energy Bands
  • Equations
  • Finite Difference Time Domain
  • Frequency
  • Materials
  • Orientation (Direction)
  • Plane Waves
  • Simulations
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Microwave Engineering.
  • Nanocomposite Materials Science