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DWDM系统啁啾高斯脉冲简并四波混频噪声标准差的计算

, PP. 736-743

Keywords: 光通信,四波混频噪声,密集波分复用,啁啾高斯脉冲

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Abstract:

假定入射脉冲为啁啾高斯脉冲,考虑到各信道内的比特模式及比特序列初始相位的随机性,得到此种情况下的强度调制直接检测(IM/DD)密集波分复用系统(DWDM)简并四波混频噪声标准差的半解析的理论计算模型,这个理论模型同时考虑到各信道间的脉冲走离效应的影响,计算结果表明除了群速度色散、信道间隔等是影响此种标准差的重要因素外,当高斯脉冲有较小的初始脉宽时,各信道比特序列的相对初始时延、初始啁啾参量都是重要的影响因素,计算结果同时表明初始脉宽较小时,色散效应导致的脉宽随距离的变化对这种标准差值的影响不能忽略。

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