• Slow light with symmetric gap plasmon guides with finite width metal claddings

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      https://www.ias.ac.in/article/fulltext/pram/072/02/0303-0314

    • Keywords

       

      Gap plasmon; waveguide; slow light.

    • Abstract

       

      We study the dispersion relation and the modes of a symmetric gap plasmon guide, where a dielectric planar slab is coated with finite metallic layers on both top and bottom. The finite conductivity of the metal is taken into account. The modes of the structure exhibit significant differences from those of dielectric waveguides with air or metal as the bounding media. Avoided level crossing phenomenon between the plasmon and the guided modes is shown to exist, leading to leaky modes. The structure sandwiched between two high index media is shown to lead to slow light in transmission. The group delay is shown to be larger for higher order modes.

    • Author Affiliations

       

      S Dutta Gupta1

      1. School of Physics, University of Hyderabad, Hyderabad 500 046, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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