一种短距离光纤频率信号传递方法研究
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摘要
基于导航系统光纤频率信号双环锁相传递的原理,分析了短距离光纤频率信号传输的瓶颈,提出了一种用于短距离光纤频率信号传递方法。根据双环锁相结构将携带两倍相位抖动信息的返回光信号经接收与本地信号鉴相,调整环路滤波器对相位差信号进行处理,产生环路控制信号-φp,反馈控制压控振荡器。环路滤波器稳定时,压控振荡器产生的再生信号与本地信号同频同相,达到信号稳相传输的目的。通过搭建实验模型,测试结果表明,具有较高的指标,验证了该方法的可行性与有效性。
Based on the principle of optical fiber frequency signal transmission of double phase-locked loop,the bottleneck of optical fiber frequency signal transmission is analyzed,and an optical fiber frequency signal transmission method is proposed. On the basis of double phase-locked loop structure,perform phase discrimination of the fiber frequency signal carrying double variation message in comparison with the local signal.Adjust the loop filter to process the optical differential signal,then produce loop control signal-φpand feed it back to VCO. When the loop filter is stable,the regenerated signal and the local signal have the same frequency and phase,achieving the goal of phase stabilized signal transmission. The feasibility and effectiveness of the proposed method are verified by experiments.
Based on the principle of optical fiber frequency signal transmission of double phase-locked loop,the bottleneck of optical fiber frequency signal transmission is analyzed,and an optical fiber frequency signal transmission method is proposed. On the basis of double phase-locked loop structure,perform phase discrimination of the fiber frequency signal carrying double variation message in comparison with the local signal.Adjust the loop filter to process the optical differential signal,then produce loop control signal-φpand feed it back to VCO. When the loop filter is stable,the regenerated signal and the local signal have the same frequency and phase,achieving the goal of phase stabilized signal transmission. The feasibility and effectiveness of the proposed method are verified by experiments.
引文
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[2]梁双有,张健康,李立中.光纤时间传输及相位补偿[J].时间频率学报,2008,31(2):147-156.
[3]代玉峰,卢麟,王荣,等.光纤频标传递的稳定性分析[J].宇航计量技术,2010,30(1):47-52.
[4]卢麟,吴传信,经继松,等.原子频标光纤长距离传递的稳定度损失分析[J].解放军理工大学学报(自然科学版),2013,14(2):120-123.
[5]马文起,耿虎军,郭肃丽,等.一种基于FPGA和Matlab的时延测量方法[J].无线电工程,2014,44(11):38-40.
[6]李孝辉,杨旭海,刘娅,等.时间频率信号的精密测量[M].北京:科学出版社,2010.
[7]Calhoun M,Huang S,Robert L T.Stable Photonic Links for Frequency and Time Transfer in the Deep-space Network and Antenna Arrays[J].Proceedings of the IEEE,2007,95(10):556-563.
[8]Amemiya M,Imae M,Fujii Y,et al.Simple Time and Frequency Dissemination Method Using ptical Fiber Network[J].IEEE,2008,57(5):878-883.
[9]李丽君,徐文云.光纤通信[M].北京:北京大学出版社,2010.
[10]漆贯荣.时间科学基础[M].北京:高等教育出版社,2006.
[11]梁双有,李立中,樊战友.光纤时间频率传递方法[C]∥2007年全国时间频率学术会议,2007:357-362.
[12]Keiser G.光纤通信[M].李玉权,译.北京:电子工业出版社,2002.
[13]杨飞,蔡海文,桂有珍.60 km商用光纤链路高精度时频传递实验研究[C]∥2013全国时频会议,2013.
[14]周渭,偶晓娟,周晖,等.时频测控技术[M].西安:西安电子科技大学出版社,2006.
[15]沈建国,吴龟灵,吴雷,等.基于双混频时域差分技术的光纤频率传输研究[J].宇航计测技术,2011,31(5):56-59.
[16]张安旭.基于光纤的稳相传输技术研究[D].北京:北京邮电大学,2015.
[17]江贤峰.高稳定时间频率信号光纤传递和复原技术研究[D].上海:上海交通大学,2016.
[18]仇应华.光纤传输系统用超高速时钟恢复集成电路研究[D].南京:东南大学,2006.
[19]Fujieda M,Kumagai M,Gotoh T,et al.Ultrastable Frequency Dissemination Via Optical Fiber an NICT[J].IEEE Transactions on Instruments Measurement,2009,58(4):1223-1228.
[20]Musha M,Hong F L,Nakagawa K,et al.Coherent Optical Frequency Transfer over 50 km Physical Distance Using a120 km Long Installed Telecom Fiber Network[J].Optics Express,2008,16(21):16459-16466.