CAJ | 학술논문

以带光前置放大器且采用MZI相干和直接检测方式的DPSK接收机为分析模型,从考虑线性附加噪声和非线性相位噪声入手,对噪声统计特性进行了数学分析,并推导出了概率密度函数和BER公式.结果表明:数值计算结果与已发表论文的试验结果较为吻合;非线性相位噪声会对系统性能造成严重影响;高斯近似法不能很好的分析此模型.
이대광전치방대기차채용MZI상간화직접검측방식적DPSK접수궤위분석모형,종고필선성부가조성화비선성상위조성입수,대조성통계특성진행료수학분석,병추도출료개솔밀도함수화BER공식.결과표명:수치계산결과여이발표논문적시험결과교위문합;비선성상위조성회대계통성능조성엄중영향;고사근사법불능흔호적분석차모형.
The statistical characteristic of noise is analyzed, and the expression for PDF and BER in the receiver model with preamplifier and MZI for direct detecting DPSK is got, where both linear additional noise and nonlinear phase noise are taken into consideration. The numerical result is in accord with the published experimental result, and show that traditional Gaussian approximate analysis isn't applicable to this model because of the effect of nonlinear phase noise on system.