On nonlinearly-induced noise in single-channel optical links with digital backpropagation.
On nonlinearly-induced noise in single-channel optical links with digital backpropagation.
复制标题
数字反向传播单通道光链路中非线性引起的噪声。
作者：
L. Beygi;N. V. Irukulapati;E. Agrell;P. Johannisson;M. Karlsson;H. Wymeersch;P. Serena;A. Bononi
在本文中，我们研究了单通道非色散管理光纤链路的电子色散补偿（EDC）和数字反向传播（DBP）的性能限制。一个已知的分析方法，以获得与EDC的系统的性能进行扩展，以获得一阶近似的系统与DBP的性能。与非线性类噪声干扰（通常称为非线性噪声）的方差随EDC输入功率的三次增长相反，DBP使用此近似值观察到二次增长。最后，我们提供了数值结果来验证所提出的方法的准确性，并与现有的分析模型进行比较。
In this paper, we investigate the performance limits of electronic chromatic dispersion compensation (EDC) and digital backpropagation (DBP) for a single-channel non-dispersion-managed fiber-optical link. A known analytical method to derive the performance of the system with EDC is extended to derive a first-order approximation for the performance of the system with DBP. In contrast to the cubic growth of the variance of the nonlinear noise-like interference, often called nonlinear noise, with input power for EDC, a quadratic growth is observed with DBP using this approximation. Finally, we provide numerical results to verify the accuracy of the proposed approach and compare it with existing analytical models.