温度对光缆中数字信号漂移特性的影响

Influence of Temperature on Wander Propertyof the Digital Signai in Optical Cable Transmission System

在光缆传输系统中，环境温度的变化会使数字信号发生漂移，从而影响传输质量，在长途架空光缆传输系统中，这种影响最为严重。首先对影响光纤中数字信号漂移的因素进行分析，然后给出试验光纤的温度漂移特性的测试结果，并对试验数据进行了处理和分析．最后，对光缆中数字信号的温度漂移特性进行了讨论．

In optical cable transmission system the digital signal will generate the wander due to the change of environment' s temperature. Thus the quality of transmission will be influenced. It is the most serious problem in long distance aerial optical cable transmission system. The factors which give rise to the wander of the digital signai in the optical fiber are analysed. The measured data of the temperature wander properties in the experimented fiber are given. The experimental data are processed and analysed. The temperature wander properties of digital signal in the optical fiber are discussed.