本文综合考虑了在非线性效应和色散效应作用下,横向分段连续介质中孤立波的传播。并以椭圆芯单模阶跃光纤为特例,讨论了光纤结构参数、孤立波振幅对偏振色散和孤立波宽度的影响。理论结果表明,在特殊的孤立波振幅下,偏振色散为零。 In this paper, the propagation of solitary waves in a transversely segmented continuous medium is considered synthetically under the effect of nonlinear effect and dispersion effect. Taking the elliptic core single-mode step fiber as a special case, the influence of the fiber structure parameters and the amplitude of the isolated wave on the polarization dispersion and the width of the solitary wave is discussed. Theoretical results show that the polarization dispersion is zero at a particular isolated wave amplitude.