基于受激布里渊散射效应(SBS)和掺铒光纤(EDF)的线性增益机理研究了一种环形腔多波长布里渊掺铒光纤激光器(BEFL)。在该激光器中使用单模光纤作为布里渊增益介质,使用掺铒光纤来放大产生的斯托克斯(Stokes)信号,使该激光器在室温下产生稳定的多波长输出。通过对激光器结构中的环行器和耦合器的位置以及耦合器的接入方式的研究与分析发现:耦合器的接入方式、环行器与耦合器的位置均对激光器的输出有影响。在可调谐光源TLS(布里渊泵浦激光器)的功率大小为14dBm,980nm泵浦激光器的功率大小为23dBm,单模光纤长度为10km的情况下进行了实验测试,结果表明:耦合器的接入方式对BEFL的输出影响很明显,最后给出了详细的测试结果和相应解释。 A ring cavity multiwavelength Brillouin erbium - doped fiber laser (BEFL) was studied based on the linear gain mechanism of stimulated Brillouin scattering (SBS) and erbium - doped fibers (EDF). In this laser, a single-mode fiber is used as the Brillouin gain medium, and the Erbium-doped fiber is used to amplify the resulting Stokes signal so that the laser produces a stable multi-wavelength output at room temperature. Through the research and analysis on the position of the circulator and the coupler in the laser structure and the access way of the coupler, it is found that the access way of the coupler, the position of the circulator and the coupler all have an influence on the output of the laser. Experimental results show that when the power of tunable light source TLS (Brillouin pump laser) is 14dBm, the power of 980nm pump laser is 23dBm and the length of single-mode fiber is 10km, the experimental results show that the coupler The effect of input mode on the output of BEFL is very obvious. Finally, the detailed test results and corresponding explanations are given.