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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。
In this paper, the optical signal transmission under the combined action of self-phase modulation and cross-phase modulation in the pump sounding wave structure is studied for the direct detection wavelength division multiplexing system with intensity modulation. The waveform and intensity of the detection wave in the arbitrary pumping signal are given. Modulation rate theory analysis method, the effect of channel spacing and transmission rate on cross-phase modulation is analyzed. It is found that the effect of self-phase modulation of the pump wave is mainly reflected in the increase of the intensity modulation rate in the time domain of the probe wave. Analytical results and numerical values Simulation can better match.