We reveal the existence of dynamically stable, composite topological solitons in Bessel photonic lattices imprinted in focusing Kerr-type nonlinear media. The new stable, composite solitons are made of a vortex ring with unit topological charge incoherently coupled to a fundamental soliton. The stabilization of the otherwise highly azimuthally unstable vortex rings is provided under suitable conditions, which we study in detail, by cross-phase-modulation coupling with the fundamental soliton companion.
© 2005 Optical Society of America
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
Yaroslav V. Kartashov, Lluis Torner, and Victor A. Vysloukh, "Composite vortex-ring solitons in Bessel photonic lattices," J. Opt. Soc. Am. B 22, 1366-1370 (2005)