Unidirectional flow of discrete solitons in optical waveguide arrays with nonlinearity management

U. Al Khawaja, S. M. Al-Marzoug, H. Bahlouli

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We propose a mechanism for realising a unidirectional flow of discrete solitons in optical waveguide arrays. Modulating the nonlinear interaction strength in each waveguide according to a double reflectionless potential well with slight difference in the depths of its two wells, we achieve a unidirectional flow of the soliton propagation. We verify clearly, through the transport coefficients as in terms of the speed of the incident soliton, that an incident soliton velocity window of finite width exists where unidirectional flow can be realised. We discuss the physics underlying this behaviour on the basis of energy exchange between the soliton's kinetic and interaction energies.

Original languageEnglish
Article number126625
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume384
Issue number25
DOIs
Publication statusPublished - Sept 7 2020

Keywords

  • Cubic nonlinearity
  • Solitons
  • Unidirectional flow
  • Waveguides

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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