Optical vortex soliton with self-defocusing Kerr-type nonlocal   nonlinearity
  We develop one numerical method to compute the optical vortex soliton with self-defocusing Kerr-type nonlocal nonlinearity. With the numerical simulation method, the propagation and interaction properties of such optical vortex solitons are investigated. 
Shigen Ouyang, Qi Guo