推导了高速准线性光传输系统中信道内四波混频、信道内交叉相位调制等非线性效应方程, 并根据方程进行计算机建模, 从而实现高速准线性光传输系统的数值模拟。最后通过搭建仿真传输链路, 比较了准分布式色散补偿方案和集总色散补偿方案的优劣, 并对不同速率的准线性光传输系统的性能进行了分析, 得到各非线性相互作用随速率变化的关系。

The nonlinear effect equations describing intra-channel four-wave mixing and intra-channel cross phase modulation in high-speed quasi-linear optical transmission system were deduced first, then the simulation model was built. Based on this model set, the quasi-distributed dispersion compensation solution and the lumping dispersion compensation solution were compared. Lastly, the trends of nonlinear interactions changing with bit rates were acquired by analyzing the performance of quasi-linear optical transmission systems with different bit rates.