Femtosecond pulse trapping by cross phase modulation in photonic crystal fibers

摘要

The characteristics of femtosecond pulse trapping in photonic crystal fibers are investigated. Numerical simulations show that the efficiency of pulse trapping can be improved by adjusting the parameters of pump pulse. For a given pulse width, the trapping efficiency is fluctuant as the temporal delay increases and has a maximal value. The blue-shift of signal pulse and the red-shift of pump pulse, however, have no matter with temporal delay. The maximal trapping efficiency and the corresponding temporal delay both decrease as the pulse width increases.