高精度频率远距离光纤传输信道特性研究  

Research on Channel Characteristics of High-Precision Frequency Remote Transmission via Optical Fiber

作　　者：李东瑾 梅进杰[1] 胡登鹏[1,2] 任天鹏 

机构地区：[1]空军预警学院,湖北武汉430019 [2]航天飞行动力学技术重点实验室,北京100094

出　　处：《中国激光》2016年第8期234-241,共8页Chinese Journal of Lasers

基　　金：国家自然科学基金(11403001);航天飞行动力学技术重点实验室开放基金(2013afdl009)

摘　　要：针对光纤信道特性变化引起频率远距离传输的稳定度损失问题进行了研究。综合光纤热膨胀、折射率分布和色散效应特性随环境温度变化引入的不稳定性,建立了链路时延模型。通过25km单模光纤1550nm光信号的传输实验对该模型进行了验证。实验结果表明,当光纤温度与环境温度同步变化且其他环境因素对传输稳定性影响较小时,该模型计算得出的理论时延变化与实验结果保持一致。对该模型进行了分析讨论,确定了模型参数随温度和波长变化情况,并得出了各特性引入时延变化的量级,当折射率变化引起的相对时延变化为10.22ns时,光纤热膨胀和色散效应引入的相对时延变化分别为0.7741ns和-0.5983ps。The loss of stability of frequency remote transmission problems caused by fiber channel characteristics is studied. The unstability is introduced by integrated fiber thermal expansion, refractive instability distribution and dispersion effects characteristic changing with temperature. A link delay model is established. 1550 nm signal transmission experiment through the 25 km single mode fiber model is validated. Experimental results show that the theoretical calculated delay variation and experimental results of the model stay consistent, when the optical fiber temperature and environmental temperature change synchronized and other environmental factors have little effect on the stability of the transmission. The model is discussed and the changes of model parameters caused by temperature and wave length are determined, and the order of magnitudes of various features introduced to delay is obtained. When the relative delay caused by changes of refractive index change turns to 10.22 ns, the fiber thermal expansion and dispersion effects caused delays are 0. 7741 ns and -0. 5983 ps respectively.

关 键 词：光纤光学 时延模型 时延抖动 时频传递 色散效应 折射率 

分 类 号：TN911[电子电信—通信与信息系统]