Nonlinear propagation of stacking chirped pulse in single-mode fiber

Stacking chirped pulse has been studied on its shape ability. When it propagates in single-mode fiber, the nonlinear effects become very significant because of high peak power. By numerical solving the nonlinear Schrodinger equation the simulation results indicate that stacking chirped pulse has different transmission characteristic from chirped pulse because of its special spectrogram distribution. In the paper, the dispersion length and the nonlinear length are modified for stacking chirped pulse. Even the SPM effects dominate over GVD effects in propagation, GVD effects should not be ignored or be treated as perturbation. More details about pulse evolution are discussed: as the stacking chirped pulse propagating, the pulse width changes little while the detail structure becomes unorganized and peak power decreases; the spectrum are significantly broadened because of the intense SPM effects.