Discrete soliton collisions in a waveguide array with saturable nonlinearity

J. Cuevas, J. C. Eilbeck

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


We study the symmetric collisions of two mobile breathers/solitons in a model for coupled wave guides with a saturable nonlinearity. The saturability allows the existence of mobile breathers with high power. Three main regimes are observed: breather fusion, breather reflection and breather creation. The last regime seems to be exclusive of systems with a saturable nonlinearity, and has been previously observed in continuous models. In some cases a "symmetry breaking" can be observed, which we show to be an numerical artifact. © 2006 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalPhysics Letters A
Issue number1
Publication statusPublished - 2 Oct 2006


  • Saturable nonlinearity
  • Solitons
  • Waveguide arrays


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