| Autor: |
Salgueiro, J. R., Kivshar, Y. S., Salgueiro, J. R., Kivshar, Y. S. |
| Zdroj: |
European Physical Journal Special Topics; June 2009, Vol. 173 Issue: 1 p281-288, 8p |
| Abstrakt: |
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. |
| Databáze: |
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