We derive analytical bright and dark solitons of the modified nonlinear Schrdinger equations with variable coefficients.Under constraint conditions between system parameters,the optical soliton transmission in the dispersiondecreasing fibers can be exactly controlled by proper dispersion management.The analytical description of the interactions between the bright and dark solitons are first obtained.
We derive analytical bright and dark solitons of the modified nonlinear Schroedinger equations with variable coefficients. Under constraint conditions between system parameters, the optical soliton transmission in the dispersiondecreasing fibers can be exactly controlled by proper dispersion management. The analytical description of the interactions between the bright and dark solitons are first obtained.