Optical vortex solitons and soliton clusters in photonic crystal fibres
Departamento de Física Aplicada, Universidade de Vigo, Facultade de Ciencias de Ourense, As Lagoas, s/n, 32004 Ourense, Spain
2 Nonlinear Physics Center and Center for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University, Canberra, ACT, 0200, Australia
Corresponding author: email@example.com
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.
© EDP Sciences, Springer-Verlag, 2009