| 星间相干光通信中的光学锁相环 |
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| 引用本文： | 许楠,刘立人,刘德安,周煜.星间相干光通信中的光学锁相环[J].激光与光电子学进展,2008,45(4):25-33. |
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| 作者姓名： | 许楠 刘立人 刘德安 周煜 |
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| 作者单位： | 中国科学院上海光学精密机械研究所,上海,201800 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 在相干体制下,二进制相移键控(BPSK)信号调制的零差接收机可实现理论上的最高灵敏度,是星间相干光通信的研究和应用重点.零差接收机要求本振波和信号波严格相位同步,常用的相位同步技术是光学锁相环(OPLL).阐述了光学锁相环的基本原理,介绍了近20年来光学锁相环的发展,在此基础上总结了各种类型锁相环的性能和适用范围.回顾了欧洲国家在星间相干光通信计划中通信终端使用光学锁相环的情况.最后对光学锁相环技术进行了总结,对该技术的前景进行了展望.
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| 关 键 词： | 星间光通信 相干探测 光学锁相环 相干通信终端 |
| 收稿时间： | 2007/11/14 |
| 修稿时间： | 2007年11月14 |
Optical Phase Locked Loops in Inter-Satellites Coherent Optical Communications |
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| XU Nan,LIU Liren,LIU Dean,ZHOU Yu.Optical Phase Locked Loops in Inter-Satellites Coherent Optical Communications[J].Laser & Optoelectronics Progress,2008,45(4):25-33. |
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| Authors: | XU Nan LIU Liren LIU Dean ZHOU Yu |
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| Abstract: | Homodyne binary phase shift keying(BPSK) receivers can achieve the best sensitivity theoretically， so becomes the research and application focus of inter-satellites coherent optical communications. Homodyne receivers require the local oscillating laser and the signal wave to oscillate synchronously， and optical phase locked loop(OPLL) is the most efficacious phase synchronous technology. We survey the principle of OPLL， and introduce the development of OPLL in recent twenty years. Basis on this，the characteristics and applicability of each OPLL type are discussed. Applications of OPLL in international representative research of inter-satellites coherent optical communications are reviewed. In the end we summarize the OPLL technology and give the prospect. |
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| Keywords: | inter-satellite optical communications coherent detection optical phase-locked loop coherent communication terminal |
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