超长距离DWDM系统中DRA放大对OSNR的改进

OSNR improvement introduced by distributed Raman amplification in ultra-long haul DWDM systems

文章引入了光信噪比增益的概念,推导出了含有分布拉曼放大器(DRA)的多跨距段DWDM系统光信噪比(OSNR)的计算公式,并通过实验进行了验证.

In this paper, the authors introduce the concept of optical signaltonoise ratio (OSNR) gain. We also derive the expression of OSNR of multispan DWDM systems including distributed Raman amplifiers (DRA). The theoretical prediction agrees well with the experimental results.