提出了利用光纤环形镜和高反射率光纤光栅做腔镜的F P腔掺镱光纤激光器的优化设计结构。光纤环形镜的宽带反射特性使抽运光能够充分被介质吸收 ,提高激光器的转化效率 ;其反射率可调特性容易得到最佳耦合输出比 ,当光纤长度改变时 ,不必更换输出腔镜就可以得到最佳功率输出。光纤长度 7m ,抽运功率 5 1mW时 ,激光器输出功率为 5 6 5mW ,斜率效率为 19%。与其他结构光纤激光器相比 ,这种优化结构效率更高 The optimized structure of Fp-cavity Ytterbium-doped fiber lasers using a fiber ring mirror and a high-reflectivity fiber grating as a cavity mirror is proposed. The broadband reflection characteristic of the fiber ring lens enables the pump light to be sufficiently absorbed by the medium to improve the conversion efficiency of the laser. The adjustable reflectance makes it easy to obtain the optimal coupling output ratio. When the fiber length is changed, the output cavity mirror can be replaced Get the best power output. Fiber length 7m, pumping power 5 1mW, the laser output power of 5 6 5mW, the slope efficiency of 19%. This optimized structure is more efficient than other structured fiber lasers