4.6 Article

Dispersion relation for surface plasmon polaritons in metal/nonlinear-dielectric/metal slot waveguides

Journal

OPTICS LETTERS
Volume 36, Issue 17, Pages 3374-3376

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.36.003374

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Funding

  1. Australian Research Council [DP110100713]

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We present the first (to our knowledge) exact dispersion relation for the transverse-magnetic surface plasmon polariton (SPP) modes of a plasmonic slot waveguide, which is formed by a nonlinear Kerr medium sandwiched between two metallic slabs. The obtained relation is then simplified to the case of small field intensities, while retaining nonlinear terms, to derive approximate dispersion equations for the symmetric and antisymmetric SPP modes. (C) 2011 Optical Society of America

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