光电振荡器中锁相环和注入锁定技术的比较和优化  

Comparison and Optimization of Phase Locked Loop and Injection Locking Techniques for Optoelectronic Oscillators

作　　者：郑俊超[1] 金韬[1] 池灏[1] 童国川 朱翔[1] 来天皓 

机构地区：[1]浙江大学信息与电子工程学院,杭州310027

出　　处：《光子学报》2017年第4期62-67,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61675180;61275027;61575171)资助~~

摘　　要：分析比较了基于锁相环技术和基于注入锁定技术的两种光电振荡器的特性,推导了两种光电振荡器的噪声传递函数,并进行了实验验证,得出了这两种技术应用于光电振荡器的相似性和各自的优缺点.由于光纤对温度的高敏感性,采用这两种技术的光电振荡器都存在着易失锁的问题.为解决这一问题,分别分析了两种光电振荡器输出信号与参考信号间的相位关系,基于此关系设计了锁定状态监测和反馈系统,并实验验证了系统的有效性.The characteristics of two types of Optoelectronic Oscillators （OEOs） based on phase-locked loop technique and injection-locked teehnique were analyzed and compared. The noise transfer functions of the two types of OEOs were deduced and verified by experiments. The similarities and the respective merits between the two techniques were discussed. There is a problem of losing lock in the two types of OEOs because the optical fiber has a high sensitivity to temperature. To solve this problem, a locking state monitoring and feedback system was designed according to the phase difference between the output signal and the reference signal. The system was also verified by experiments.

关 键 词：光电振荡器 锁相环 注入锁定 相位噪声 失锁 

分 类 号：TN929.1[电子电信—通信与信息系统]