掺铒光纤环形激光器输出波长的研究  

Analysis of lasing wavelengths for erbium-doped fiber ring lasers

作　　者：王练[1] 雷芳[2] 

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065 [2]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《激光技术》2009年第4期381-383,共3页Laser Technology

基　　金：重庆邮电大学自然科学基金资助项目(A2008-48)

摘　　要：为了得到掺铒光纤环形激光器的激光运行波长与掺铒光纤长度和耦合比之间对应关系,基于3能级的速率方程采用解析方法进行了理论分析,并通过实验给予验证,分别取得了激光运行波长随掺铒光纤长度和耦合器耦合比变化的数据。结果表明,随着光纤长度的增加,激光的输出波长往长波方向移动,输出波长为1563nm 时输出功率最大,掺铒光纤最佳长度大约为11.5m,耦合比越大,激光的输出波长越短。这一结果对改变耦合比进行光纤激光器激光波长调谐的设计有很大帮助。In order to analyze the relationship among the lasing wavelength,length and coupler ratio of erbium-doped fibers, the rate equation based on 3rd energy state was solved and confirmed in experiments. The lasing wavelengths changing with the length and coupler ratio of erbium-doped fibers were obtained. The result shows that the lasing wavelength is shifted to longer wavelength with the decrease of the length of the erbium-doped fiber. The maximum output power occurs at 1563nm when the optimum length of the erbium-doped fiber is 11.5m. In addition,the lasing wavelength becomes shorter wavelength with the decrease of the coupler ratio. These are good for the optimized design of a tunable erbium-doped fiber laser by varying coupler ratio.

关 键 词：光纤光学 掺铒光纤环形激光器 掺铒光纤长度 耦合比 

分 类 号：TN248.1[电子电信—物理电子学]