运用数值方法研究了色散缓变光纤中飞秒基本孤子的传输特性，发现基本孤子脉冲不仅能被压缩，而且压缩光脉冲能保持脉宽不变传输即稳定传输。在光脉冲压缩过程中，发现三阶色散效应有较大的影响。适当地选取色散缓变光纤结构参数可以获得高质量的超短压缩光脉冲。对压缩光脉冲稳定传输的机理探索表明，光纤二阶色散纵向变化率、三阶色散与喇曼自散射效应共同作用导致压缩光脉冲稳定传输。 The transmission properties of femtosecond fundamental solitons in a chirped fiber are studied numerically. It is found that the basic soliton pulse can not only be compressed, but also can keep the constant pulse width without any change. In the light pulse compression process, we found that the third-order dispersion has a greater impact. Appropriately selecting the parameters of the dispersion-stabilized optical fiber structure can obtain high-quality ultra-short compressed optical pulses. The investigation of the mechanism of stable transmission of compressed light pulse shows that the longitudinal rate of change of the second-order dispersion of optical fiber, the third-order dispersion and the Raman scattering effect lead to the stable transmission of the compressed light pulse.