双向时分复用光纤时间传递链路噪声分析

发布时间：2018-01-15 20:03

本文关键词：双向时分复用光纤时间传递链路噪声分析　出处：《光电子·激光》2017年06期 　论文类型：期刊论文

【摘要】：研究分析了双向时分复用(BTDM)光纤时间传递链路的主要噪声及产生机理,建立了基于BTDM光纤时间传递的链路噪声模型。仿真分析了激光器强度噪声、光放大器增益与个数、接收机带宽等对BTDM光纤时间传递接收信噪比(SNR)的影响。结果表明,BTDM光纤时间传递接收SNR在光放大器达到最优增益时最大,且最大SNR随光放大器个数的增加而增加并趋于稳定;相同长度光纤链路,光放大器个数越多,在一定范围内,激光器相对强度噪声对BTDM光纤时间传递链路接收SNR影响更大,接收机带宽对BTDM光纤时间传递接收信号抖动的影响越小;BTDM光纤时间传递接收SNR随定时信号前光持续时间的增加而减小,并趋于WDM方案的SNR。
[Abstract]:In this paper, the main noise and generation mechanism of time transfer link in bidirectional time division multiplexing (TDM) fiber are studied and analyzed. The link noise model based on BTDM fiber time transfer is established. The laser intensity noise, optical amplifier gain and number are simulated and analyzed. The influence of receiver bandwidth on the SNR of BTDM fiber time transfer reception is presented. The results show that the BTDM fiber time transfer reception SNR has the maximum gain when the optical amplifier reaches the optimal gain. The maximum SNR increases with the increase of the number of optical amplifiers and tends to be stable. The more the number of optical amplifiers in the same length fiber links, the greater the influence of laser relative intensity noise on the BTDM fiber time transfer link receiving SNR in a certain range. The smaller the influence of receiver bandwidth on the time transfer signal jitter of BTDM fiber; The time transfer reception (SNR) of the BTDM fiber decreases with the increase of the pre-signal duration of the timing signal, and tends to be the SNR of the WDM scheme.
【作者单位】：上海交通大学区域光纤通信网与新型光通信系统国家重点实验室;上海交通大学北斗导航与位置服务上海市重点实验室;
【基金】：国家自然科学基金(61627817,61535006)资助项目
【分类号】：TN929.11
【正文快照】： 1引言高精度光纤时-频传递技术成为深空探测、卫星导航等领域的关键技术支撑之一[1~3]。目前,高精度光纤时间传递方案主要有双向波分复用(BWDM)传输和同纤同波的双向时分复用(BT-DM)传输两种[4,5]。基于BWDM方案的光纤时间传递能有效抑制瑞利散射的影响,但存在色散导*E-mail:w

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