Waveguiding through a two-dimensional metallic photonic crystal

Authors

  • F. I. Baida,

    Corresponding author
    1. Laboratoire d’Optique P.M. Duffieux, CNRS UMR 6603, Institut de Microtechniques de Franche-Comté FR0067, Université de Franche-Comté, 25030 Besançon Cedex, France
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  • D. Van Labeke,

    1. Laboratoire d’Optique P.M. Duffieux, CNRS UMR 6603, Institut de Microtechniques de Franche-Comté FR0067, Université de Franche-Comté, 25030 Besançon Cedex, France
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  • Y. Pagani,

    1. Laboratoire d’Optique P.M. Duffieux, CNRS UMR 6603, Institut de Microtechniques de Franche-Comté FR0067, Université de Franche-Comté, 25030 Besançon Cedex, France
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  • B. Guizal,

    1. Laboratoire d’Optique P.M. Duffieux, CNRS UMR 6603, Institut de Microtechniques de Franche-Comté FR0067, Université de Franche-Comté, 25030 Besançon Cedex, France
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  • M. Al Naboulsi

    1. Laboratoire d’Optique P.M. Duffieux, CNRS UMR 6603, Institut de Microtechniques de Franche-Comté FR0067, Université de Franche-Comté, 25030 Besançon Cedex, France
    2. France Telecom Recherche et Développement, 6 Avenue des Usines BP 382, 90007 Belfort, France
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Dr F. I. Baida. E-mail: fbaida@univ-fcomte.fr

Summary

We present a two-dimensional (2D) finite-difference time domain simulation of the propagation of light through linear and bent channels in metallic photonic crystals. We took as a starting point the Bozhevolnyi experiment, consisting of the scattering of surface plasmons by a 2D structure of finitely sized periodic gold dots arranged in a triangular lattice of 400-nm period. We model injection and propagation of light through linear channels of different widths. We also study the behaviour of light in the presence of a 90° bent line defect made in the structure. We show that the confinement depends on the orientation of the input and output line defects. The two cases of ΓM and ΓK orientations are considered and a spectral study for five different wavelengths is carried out.

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