从理论上分析了超短光脉冲在色散缓变光纤中无畸变传输所要求的色故变化关系，设计了单模缓变光纤结构参数．数值模拟验证了理论分析结果，指出改变光纤色散参数完全可以克服光纤损耗对光孤子波形的畸变影响． The relationship between the chromatic aberration and the transmission of the ultrashort optical pulse in a chirped fiber is theoretically analyzed. Numerical simulation validates the theoretical analysis. It is pointed out that changing the fiber dispersion parameters can completely overcome the effect of fiber loss on the waveform distortion of optical solitons.