摘要
研究了1550nm长距离光纤CATV系统中由自相位调制和色散引起的组合二阶互调劣化及其补偿问题.得出了在自相位调制和色散情况下,多级掺铒光纤放大器级联的光纤CATV系统组合二阶互调指标的计算公式.在采用啁啾光栅进行色散补偿时,对该组合二阶互调计算公式进行了修正.分析结果表明,色散补偿器的位置对补偿效果具有很大影响,理论模型计算可以得出色散补偿器的最佳位置,计算结果得到了系统仿真的验证.
The compensation of Composite Second Order Intermodulation （CSO） caused by Self Phase Modulation （SPM） and chromatic dispersion in 1550nm long distance fiber CATV systems were discussed. The CSO formula in the long fiber link with casecaded EDFA＇s was obtained,and then modified in the case of using chirped fiber grating for dispersion compensation. The analysis and experiment demonstrate that the effect of dispersion compensation is sensitive to the compensator position. The optimal position can be deduced through a theoretical model and verified by simulation and test.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2009年第3期665-669,共5页
Acta Photonica Sinica
基金
上海市重点学科建设项目(T0102)资助
关键词
色散补偿
自相位调制
非线性
组合二次互调
Fiber dispersion compensation
Self-phase modulation
Non-linearity
CSO
