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Waveguiding through a two-dimensional metallic photonic crystal.

F I Baida1, D Van Labeke, Y Pagani

  • 1Laboratoire d'Optique P.M. Duffieux, CNRS UMR 6603, Institut de Microtechniques de Franche-Comté FR0067, Université de Franche-Comté, 25030 Besançon Cedex, France. fbaida@univ-fcomte.fr

Journal of Microscopy
|January 21, 2004
PubMed
Summary

This study simulates light propagation in metallic photonic crystals using finite-difference time domain (FDTD) methods. Light confinement in channels and bent defects depends on input/output orientations, impacting surface plasmon behavior.

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Area of Science:

  • Condensed Matter Physics
  • Nanophotonics
  • Computational Electromagnetics

Background:

  • Metallic photonic crystals offer unique light manipulation properties due to surface plasmon resonances.
  • Previous experiments demonstrated surface plasmon scattering by periodic metallic nanostructures.
  • Understanding light propagation in engineered channels is crucial for plasmonic devices.

Purpose of the Study:

  • To simulate and analyze light propagation in linear and bent channels within a 2D metallic photonic crystal.
  • To investigate the influence of channel width and defect orientation on light confinement.
  • To perform spectral analysis of light behavior at different wavelengths.

Main Methods:

  • Two-dimensional (2D) finite-difference time domain (FDTD) simulations.

Related Experiment Videos

  • Modeling of surface plasmon scattering by periodic gold nanodots (400-nm period triangular lattice).
  • Simulation of light injection and propagation through channels of varying widths and a 90-degree bent line defect.

    • Main Results:

    • Demonstrated light propagation through linear channels of different widths.
    • Observed light behavior in a 90-degree bent line defect.
    • Showed that light confinement is dependent on the orientation (Gamma-M and Gamma-K) of input/output line defects.

    Conclusions:

    • The orientation of line defects significantly impacts light confinement in metallic photonic crystal channels.
    • FDTD simulations provide valuable insights into plasmonic waveguiding in nanostructured materials.
    • Results are relevant for the design of plasmonic circuits and optical components.