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 = 1 + i, k2 = 1 − i, k3 = 1 + 3i, and k4 = 1 − 3i.