数值结果表明，适当选择光纤光栅及入射脉冲的参数，脉冲能够得到有效压缩。
The numerical results show that picosecond pulses can be compressed effectively, if the parameters of gratings and pulses were chosen properly.
在色散补偿量相同的情况下，压缩效果随入射脉冲能量变化的规律符合理论估计。
When the dispersion compensation is the same, the relationship between the compression result and the input laser energy agrees with the theoretical analysis.
分析表明，交叉弛豫随激发场强度增大，并导致偏振因子随激发场入射脉冲面积减小。
It was revealed that the cross relaxation increased with intensity of the excitation, which resulted in the decrease of polarization factor with the input pulse area.
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