论文部分内容阅读
在通信系统中,系统的噪声往往是影响接收灵敏度的主要因素。在光纤数字传输系统中,随着传输速率的提高和中继器间距的增加,模式噪声有时便成为系统噪声中不可忽略的一部分。本文用图表分析了光纤通信系统中各种动态参量的变化对模式噪声产生的影响,分析了降低模式噪声的主要方法,并提出了在有模式噪声情况下光纤通信系统接收灵敏度的计算方法。
In communication systems, the noise of the system is often the main factor affecting the reception sensitivity. In optical fiber digital transmission systems, mode noise can sometimes become a non-negligible part of system noise as transmission rates increase and repeater spacing increases. In this paper, the influence of the variety of dynamic parameters in the optical fiber communication system on the mode noise is analyzed. The main methods to reduce the mode noise are analyzed. The calculation method of the receiving sensitivity of the optical fiber communication system in the presence of mode noise is proposed.