光子学报, 2009, 38 (3): 665, 网络出版: 2010-07-16
长距离光纤CATV系统中色散补偿位置的研究
Dispersion Compensation for Position-dependence in Long Distance Fiber CATV System
摘要
研究了1 550 nm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.
Abstract
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.
陆司琦, 宋英雄, 林如俭. 长距离光纤CATV系统中色散补偿位置的研究[J]. 光子学报, 2009, 38(3): 665. LU Si-qi, SONG Ying-xiong, LIN Ru-jian. Dispersion Compensation for Position-dependence in Long Distance Fiber CATV System[J]. ACTA PHOTONICA SINICA, 2009, 38(3): 665.
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