多波长布里渊掺铒光纤激光器的结构优化研究

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。

Study on Structure Optimization of Multi-wavelength Brillouin Erbium-doped Fiber Laser

A ring cavity multi-wavelength Brillouin erbium-doped optical fiber laser is demonstrated based on the stimulated Brillouin scattering effects and linear gain mechanism of erbium-doped fiber. For the fiber, single mode fiber is used as Brillouin gain medium and the Stokes signal is amplified by the erbium-doped fiber, so that the laser can produce a stable multi-wavelength output at room temperature. Study and analysis of the position of the circular and coupler and the access mode of the coupler indicate that they both have influence on the output of the fiber laser. Then experiments were carried out under the conditions as: Brillouin pump power of 14dBm, the 980nm pump power of 23dBm and single mode fiber length of 10k. The results show that the access mode of the coupler affects the output of the Brillouin erbium-doped fiber laser obviously and the test results and the corresponding explanations are given in detail.