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多级复合环路光学锁相环技术研究

Optical Phase Locked Loop Technology Based on Multistage Compound Loops

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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°.

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中图分类号:TN929.1

DOI:10.3788/aos201838.0506002

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金重点项目(91438204)、吉林省重点科技研发项目(20180201002SF)

收稿日期:2017-10-23

修改稿日期:2017-12-11

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作者单位    点击查看

赵馨:长春理工大学电子信息工程学院, 吉林 长春 130022
董岩:长春理工大学电子信息工程学院, 吉林 长春 130022
刘洋:长春理工大学空地激光通信技术国防重点学科实验室, 吉林 长春 130022
宋延嵩:长春理工大学空地激光通信技术国防重点学科实验室, 吉林 长春 130022
常帅:长春理工大学空地激光通信技术国防重点学科实验室, 吉林 长春 130022

联系人作者:董岩(dongyan-personal@163.com)

备注:赵馨(1977-),男,博士,副教授,主要从事空间光通信等方面的研究。E-mail: gps.ins@163.com。

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引用该论文

Zhao Xin,Dong Yan,Liu Yang,Song Yansong,Chang Shuai. Optical Phase Locked Loop Technology Based on Multistage Compound Loops[J]. Acta Optica Sinica, 2018, 38(5): 0506002

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

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