The European Physical Journal Special Topics

, Volume 173, Issue 1, pp 281–288

Optical vortex solitons and soliton clusters in photonic crystal fibres


    • Departamento de Física AplicadaUniversidade de Vigo, Facultade de Ciencias de Ourense
  • Y. S. Kivshar
    • Nonlinear Physics Center and Center for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University
Regular Article

DOI: 10.1140/epjst/e2009-01080-0

Cite this article as:
Salgueiro, J. & Kivshar, Y. Eur. Phys. J. Spec. Top. (2009) 173: 281. doi:10.1140/epjst/e2009-01080-0


We study higher-order nonlinear modes in the form of vortex solitons and soliton clusters propagating in the waveguides created in photonic crystal fibers made of a material with the focusing Kerr nonlinearity. We find numerically different families of such nonlinear modes with a nontrivial topology and study their bifurcations. We also study the soliton stability to propagation. We demonstrate that waveguides in photonic crystal fibers may support a variety of soliton clusters with the symmetries that may differ from the lattice symmetry. We also discuss briefly the case of a dual-core coupler created by two neighboring cores in a photonic crystal fiber and find numerically the profiles of symmetric and asymmetric nonlinear modes.

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© EDP Sciences and Springer 2009