Four-soliton solution and soliton interactions of the generalized coupled nonlinear Schrödinger equation
Song Li-Jun †, Xu Xiao-Ya, Wang Yan
       

Contour plots of elastic interactions of four solitons in components (a) |p| and (b) |q| for k1 = 2 + 0.5 i, k2 = 2-0.5i, k3 = 0.5 + 6i, and k4 = 0.5 − 6i.