Transient self-interaction of high-power randomly modulated picosecond pulses in fiber waveguides

The influence of the transient nature of a nonlinear polarization on the self-interaction of highpower randomly modulated subpicosecond pulses is investigated both analytically and numerically (by the Monte Carlo method) for dispersive fiber waveguides. It is shown that a finite rate of establishment of a nonlinear response gives rise to a group delay of the pulse peak, increases the rate of its decay, increases the slope of its trailing edge, and slows down deterioration of the time coherence of a pulse.