Symmetric Plasmonic Slot Waveguides with a Nonlinear Dielectric Core: Bifurcations, Size Effects, and Higher Order Modes

Wiktor Walasik, Alejandro Rodriguez, Gilles Renversez

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

We study the nonlinear stationary waves propagating in metal slot waveguides with a Kerr-type dielectric core. We develop two independent semianalytical models to describe these waves in such waveguides. Using these models, we compute the dispersion curves for about ten first modes of a nonlinear slot waveguide. For symmetric wave- guides, we find symmetric, antisymmetric, and asymmetric higher order modes which are grouped in two families. In addition, we study the influence of the slot width on the first symmetric and asymmetric modes. We also show that the dispersion curve of the first asymmetric mode is invariant with respect to the slot width for high propagation constant values and we provide analytical approximations of this curve. Using realistic values for the optogeometric parameters of the structure, we are able to obtain the bifurcation at a realistic power.

Original languageEnglish (US)
Pages (from-to)33-38
Number of pages6
JournalPlasmonics
Volume10
Issue number1
DOIs
StatePublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biophysics
  • Biochemistry

Keywords

  • Bifurcation
  • Kerr nonlinearity
  • Nonlinear plasmonics
  • Plasmon-soliton
  • Semianalytical models
  • Size effect
  • Slot waveguide
  • Spatial soliton

Fingerprint Dive into the research topics of 'Symmetric Plasmonic Slot Waveguides with a Nonlinear Dielectric Core: Bifurcations, Size Effects, and Higher Order Modes'. Together they form a unique fingerprint.

  • Cite this