We realize an experimental control over the topological stability of three-lobe discrete vortex solitons by modifying the symmetry of a hexagonal photonic lattice optically induced in a photorefractive crystal. By continuously deforming the lattice wave in one transverse direction, we manipulate the coupling between lattice sites and induce or inhibit the reversal of soliton vorticity.
© 2010 Optical Society of America
Original Manuscript: October 29, 2009
Revised Manuscript: December 15, 2009
Manuscript Accepted: December 16, 2009
Published: February 12, 2010
Bernd Terhalle, Dennis Göries, Tobias Richter, Patrick Rose, Anton S. Desyatnikov, Friedemann Kaiser, and Cornelia Denz, "Anisotropy-controlled topological stability of discrete vortex solitons in optically induced photonic lattices," Opt. Lett. 35, 604-606 (2010)