After a certain distance of propagation in a dual core optical fiber, two input antisymmetric soliton-like waves result in two output symmetric soliton-like waves having constant and same energy. The paper highlights this compensation between the gaussian pulses in both the cores by the means of collective variables (CVs) approach and the dispersion management technic. The minimum length of the fiber is obtained numerically and the influence of coupling and input CVs on this length is studied.

dual core nonlinear optical fiber, dispersion-management, minimum length.