链路时延波动对光纤时间传递稳定性的影响

发布时间：2018-04-19 13:39

本文选题：光纤光学 + 长距离时间传递　；参考：《激光与光电子学进展》2016年04期

【摘要】：环境温度和激光器输出波长变化引起的光纤链路时延波动直接影响光纤时间传递的稳定性。采用链路分段处理方法推导了长距离光纤时间传递的稳定性与激光器输出波长及链路温度变化之间的关系;通过分析实测的激光器波长波动数据,建立了激光器波长波动模型。基于实际温度数据构造了3000 km光纤链路,分析了波长波动和链路铺设深度等对双向时分复用(BTDM)和波分复用(WDM)光纤时间传递稳定性的影响。结果表明:光纤链路温度变化主要影响光纤时间传递的长期稳定性,且这种影响与光纤链路铺设深度和时间传递工作季节有关;激光器波长的随机抖动主要影响光纤时间传递的短期稳定性,而波长漂移主要影响漂移周期对应时间尺度上的时间传递稳定性。当两端激光器波长随机抖动标准差从(0.07,0.05)pm变化为(0.27,0.25)pm时,3000 km光纤时间传递的稳定度由3 ps/s恶化为12 ps/s。
[Abstract]:The time delay fluctuation caused by the variation of ambient temperature and laser output wavelength directly affects the stability of optical fiber time transfer.The relationship between the stability of long distance optical fiber time transfer and the variation of laser output wavelength and link temperature is derived by using the link segment processing method, and the wavelength fluctuation model of the laser is established by analyzing the measured wavelength fluctuation data of the laser.Based on the actual temperature data, a 3000 km optical fiber link is constructed. The effects of wavelength fluctuation and link laying depth on the time transfer stability of bidirectional time division multiplexing (TDM) and wavelength division multiplexing (WDM) optical fiber are analyzed.The results show that the temperature change of fiber link mainly affects the long-term stability of optical fiber time transfer, and this effect is related to the laying depth of fiber link and the working season of time transfer.The random jitter of laser wavelength mainly affects the short-term stability of optical fiber time transfer, while wavelength drift mainly affects the time transfer stability of the drift period corresponding to the time scale.The stability of 3000km optical fiber time transfer has deteriorated from 3 ps/s to 12 pss / s when the standard deviation of random jitter at both ends of the laser wavelength changes from 0. 07 to 0. 25 渭 m.
【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;上海交通大学上海市北斗导航与位置服务重点实验室;
【基金】：国家自然科学基金(61127016,61107041)
【分类号】：TN929.11

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