【摘要】 针对强度调制直接检测波分复用系统研究了抽运探测波结构中自相位调制和交叉相位调制共同作用下的光信号传输 ,给出了确定任意抽运信号下的探测波时域波形及强度调制率的理论解析方法 ,分析了信道间隔、传输速率对于交叉相位调制的影响 ,发现抽运波自相位调制的作用主要体现在使探测波时域强度调制率有所增大 ,解析结果和数值仿真能较好地吻合。更多还原

【Abstract】 The transmission of optical signal under the effects of cross-phase modulation (XPM) and self-phase modulation (SPM) together in pump-probe wave structure is investigated in intensity modulation direct detection wavelength division multiplexing (IM-DD WDM) systems. The analytical method to determine the time-domain shape of probe wave when arbitrary wave is inputted in pump channel is confirmed. The impact of channel spacing and transmission rate on XPM is assessed. It is found that the main effect of SPM in pump channel is to increase time-domain intensity-modulation index to a certain extent. The analytical result agrees well with numerical simulation.更多还原