对石英系单模保偏光纤中的受激拉曼散射传输模式进行了实验研究，测得三种不同截止频率的单模保偏光纤中受激拉曼散射光谱及其模式的分布，其结果与圆芯多模渐变折射率光纤中的受激拉曼散射模式分布完全不同：斯托克斯光谱的光斑尺寸基本不变；而且具有以高阶模传输的特点。这些结果在国内外尚未见报道。 The stimulated Raman scattering transmission modes in single-mode PM fiber are investigated experimentally, and the distribution of stimulated Raman scattering spectra and their modes in single-mode PM fiber with three different cut-off frequencies are measured. The results In contrast to the stimulated Raman scattering modes in a circular core multimode graded-index fiber, the spot size of the Stokes spectrum is essentially constant, and it has the characteristics of being transmitted at higher order modes. These results have not been reported at home and abroad.