报道一种全光纤调Q掺铒光纤激光器 ,在其结构中采用带有光纤光栅的光纤环形镜作为调Q装置 此调Q方案同时具有对腔内损耗进行调制和对激光输出波长选择的功能 理论上分析了不同臂长差时的脉冲出现情况 ,与实验基本相符 并对激光单脉冲产生及稳定性进行了分析讨论 An all-fiber Q-switched erbium-doped fiber laser is reported. In its structure, an optical fiber ring mirror with a fiber grating is used as a Q-adjusting device. The Q-tuning scheme has the function theory of modulating the cavity loss and selecting the output wavelength of the laser On the analysis of different arm length difference pulse appearance, and basically consistent with the experiment and laser single pulse generation and stability were analyzed and discussed