光学学报, 2018, 38 (5): 0506002, 网络出版: 2018-07-10  

多级复合环路光学锁相环技术研究 下载: 843次

Optical Phase Locked Loop Technology Based on Multistage Compound Loops
作者单位
长春理工大学电子信息工程学院, 吉林 长春 130022
摘要
星间相干通信系统其多普勒频移达到了吉赫兹量级,同时受到调谐激光器线宽、相位噪声的影响,对光学锁相环路系统提出了高要求。依据科斯塔斯锁相环技术原理,将温度调谐、压电陶瓷(PZT)调谐、声光移频器(AOFS)调谐复合到一起,通过内环与外环方式对本振激光器进行调控,实现光学锁相功能。搭建实验测试系统对环路性能进行测试,结果表明:此系统可达到锁相范围为4 GHz,锁相带宽为1.7 MHz,实现了信号光与本振光之间的多普勒频移跟踪、激光器线宽补偿及相位快速锁定,最终相位残余误差5.1°。
Abstract
The Doppler frequency shift of the inter-satellite coherent communication system reaches the order of Gigahertz. At the same time, it is affected by the line width and phase noise of the tuning laser, which imposes high requirements on the optical phase-locked loop system. Based on Costas loop technology, an optical locked loop is achieved through inner and outer loops, and the local laser is tuned when the tuning of temperature, piezoelectric ceramics(PZT), and acousto-optic modulation device(AOFS) are compounded together. An experimental test system is set up to test the performance of the loops. It turns out that this system is capable of a phase locked range of 4 GHz and a phase locked bandwidth of 1.7 MHz. Doppler frequency shift between the signal light and the local laser can be tracked, line width of the laser is compensated and the phase is locked quickly with a final residual phase error of 5.1°.

赵馨, 董岩, 刘洋, 宋延嵩, 常帅. 多级复合环路光学锁相环技术研究[J]. 光学学报, 2018, 38(5): 0506002. Xin Zhao, Yan Dong, Yang Liu, Yansong Song, Shuai Chang. Optical Phase Locked Loop Technology Based on Multistage Compound Loops[J]. Acta Optica Sinica, 2018, 38(5): 0506002.

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