利用拍频反馈控制调制频率实现再生锁模的光纤激光器  

A Regeneratively Modelocked Erbium-doped Fiber Laser by Feedback of Harmonic Longitudinal Beat Signal

作　　者：王林[1] 

机构地区：[1]深圳大学光电子技术工程系,广东深圳518060

出　　处：《半导体光电》2002年第5期308-311,共4页Semiconductor Optoelectronics

基　　金：深圳市科技局资助项目 (2 0 0 10 5 )

摘　　要：根据EDFA中的传输方程分析了再生锁模光纤激光器的自启动过程 ,指出采用拍频反馈控制调制频率实现再生锁模光纤激光器运转的前提 ,是利用在工作波长范围内呈现反常色散特性的谐振腔所具有的自发调制现象来把腔内连续或准连续光的稳态打破以产生光脉冲。阐述了如何在再生锁模光纤激光器中行之有效地提取误差信号 ,并通过反馈来控制调制频率 ,从而在实验中保证了再生锁模光纤激光器在 2 4h的连续运转中一直保持稳定的锁模状态。The physical mechanism of self start-up process in a regeneratively modelocked erbium-doped fiber laser is analyzed. In experiment, harmonic regenerative modelocking was achieved by feeding back the harmonic longitudinal beat signal which was detected with a high speed photodetector and a high Q dielectric filter. A very stable pulse train at a repetition of 2.4 GHz has been obtained from the regeneratively modelocked erbium-doped fiber laser which keeps the modelock status for 24 hours.

关 键 词：光纤激光器 再生锁模 拍频反馈 

分 类 号：TN248.35[电子电信—物理电子学]