Spatial soliton collision in nonlinear Kerr medium

In order to study the collision of Kerr Solitons and collision of nonlinear Solitons, we carried out the numerical simulation and we found that the interaction between them was different: The collision of kerr solitons is periodic collision but the collision of nonlinear kerr solitons is combined. Periodic collision of kerr solitons can be changed by changing the amplitude ratio while the collision of nonlinear Kerr Solitons can be adjusted by selecting the appropriate phase difference.