Discrete vector solitons in one-dimensional lattices in photorefractive media

  • E. P. Fitrakis*
  • , P. G. Kevrekidis
  • , B. A. Malomed
  • , D. J. Frantzeskakis
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We construct families of two-component spatial solitons in a one-dimensional lattice with saturable on-site nonlinearity (focusing or defocusing) in a photorefractive crystal. We identify 14 species of vector solitons, depending on their type (bright/dark), phase (in-phase/staggered), and location on the lattice (on/off-site). Two species of the bright/bright type form entirely stable soliton families, four species are partially stable (depending on the value of the propagation constant), while the remaining eight species are completely unstable. "Symbiotic" soliton pairs (of the bright/dark type), which contain components that cannot exist in isolation in the same model, are found as well.

Original languageEnglish
Article number026605
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume74
Issue number2
DOIs
StatePublished - 2006

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