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Analysis of intrachannel four-wave mixing in differential phase-shift keying transmission with large dispersion

机译:大色散差分相移键控传输的通道内四波混频分析

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摘要

Intrachannel four-wave mixing (IFWM) in highly dispersed differential phase-shift keying (DPSK) transmission systems is studied with a simple analytical model and numerical simulation. It is found that the IFWM effect in DPSK systems is smaller and less dependent on the bit pattern than in on-off-keying systems with the same average power. The reduced pulse energy in DPSK and correlation between the nonlinear phase shifts of two adjacent pulses contribute to the robustness of DPSK versus IFWM.
机译:利用简单的分析模型和数值模拟研究了高度分散的差分相移键控(DPSK)传输系统中的通道内四波混频(IFWM)。已经发现,与具有相同平均功率的开关键系统相比,DPSK系统中的IFWM效应更小且对位模式的依赖性更低。 DPSK中降低的脉冲能量以及两个相邻脉冲的非线性相移之间的相关性有助于DPSK与IFWM的鲁棒性。

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