OOK相干复用系统中交叉相位调制引起的信噪比劣化

XPM Imposed SNR Degradation in Coherence Multiplexing Systems

本文研究了交叉相位调制效应（XPM）在多种情况下对开关键控（OOK）相干复用系统信噪比的影响.得到了单一信道下劣化因子的解析表达式和多信道情况下的计算模拟结果。本文认为，作为系统设计的原则，为了减小交叉相位调制引起的信噪比劣化.系统尽可能安排在小信号功率，小编码延迟时间方式下工作。

This paper reported our discovery on the cross-phase-modulation(XPM) imposed degradation of the signal-to-noiso ration(SNR) in on-off keying (OOK) coherence multiplexed systems, Analytical expression was obtained for one channel case and numerical results were given for multiple simultaneous channels case. According to our research. channel power and encoder delays should be as small as possible to minimize the phase-perturbation degradation.