光脉冲展宽的解析公式在高速 WDM 系统设计中的应用

Analytical Formula for Optical Pulse Spreading with Application in the Design of High Speed WDM Systems

给出了光脉冲在光纤群速度色散和自相位调制效应的共同作用下，均方根宽度沿传播距离变化的近似解析公式，并重点讨论其在高速波分复用光纤通信系统设计中的应用。解析公式不仅能用于估计信道功率、光纤色散等参数的容限范围，还可为系统色散补偿或色散管理的优化设计提供指导。

The application of an analytical formula for optical pulse spreading in the design of high speed WDM systems is discussed in the paper. This approximate formula, derived by the authors, takes into account the effects of transmitter chirp, fiber group velocity dispersion and self phase modulation. The tolerance margins of several important system pareameters, such as optical signal power and fiber dispersion, are analytically evaluated, and the design optimization guidelines for systems using dispersion compensation (or management) are proposed.