实验研究了由宽带啁啾光纤布拉格光栅和Sagnac梳状滤波器构成谐振腔的多波长拉曼光纤激光器，分析了在激光器谐振腔内熔接一段积分拉曼增益小的色散位移光纤（引入光波间的四波混频作用）对激光器输出谱的影响。结果表明，同等抽运功率条件下，四波混频的引入起到了光波间的能量传递作用，使具有较平坦功率谱的输出波长从未加入色散位移光纤时的3个增加至6个。

A stimulated Raman scattering (SRS)-based multiwavelength fiber laser comprising of broadband chirped fiber Bragg grating and Sagnac interleaver is investigated experimentally. Four-wave mixing processes among channels are introduced into the cavity through a length of dispersion-shifted fiber (DSF) with small integrating Raman gain. Results show that four-wave mixing plays a role of transferring energy from higher power channels to lower ones, and the quantity of output wavelength increases from three without DSF to six at the same pump level.