提出一种简单的理论模型 ,并通过数值模拟详细研究了可调谐光纤环形腔激光器的输出特性随掺铒光纤长度、输出耦合比、抽运功率、腔内损耗等参量的变化关系 .理论分析得到 ,通过参量优化可以实现在铒离子增益范围内超过 130nm带宽 (15 0 0— 16 30nm)的激光输出 .实验获得了 10 0nm带宽 (15 18 5— 16 18 5nm)的可调谐激光输出 ,激光器输出功率高 ,信噪比在大部分可调范围内高于 6 0dB ,实验结果与理论分析符合得较好 A simple theoretical model is proposed and the relationship between the output characteristics of the tunable fiber ring cavity laser and the parameters such as the length of the erbium-doped fiber, output coupling ratio, pumping power and cavity loss is studied in detail by numerical simulation. , The laser output exceeding 130nm bandwidth (1500 ~ 1630nm) in erbium ion gain range can be achieved through parametric optimization.The tunable laser output of 10 0nm bandwidth (15 18 5- 16 18 5nm) is obtained experimentally, and the laser output High power, signal to noise ratio in most of the adjustable range higher than 6 0dB, the experimental results in line with the theoretical analysis is better