40Gbit/s50GHz间隔DWDMDPSK系统MZDI延迟时间的优化
DOI: 10.13190/jbupt.200802.34.xiexch, PP. 34-37
Keywords: 光通信,调制码型,差分相移键控,马赫-曾德尔延迟干涉仪,延迟时间,VPI仿真
Abstract:
针对差分相移键控(DPSK)信号频谱宽、传输性能受光通道带宽影响大的特点，通过VPItransmissionMaker(VPI)仿真对DPSK系统性能受光通道带宽的影响进行了分析和优化。指出对于40Gbit/s速率50GHz通道间隔的密集波分复用（DWDM）网络，DPSK解调器马赫-曾德尔延迟干涉仪(MZDI)的延迟时间应小于1个比特周期，带宽越窄延迟时间应越小；并且建议通过监测传输性能参数反馈调节延迟时间以适应光信号途经光分插复用设备级数的变化使传输性能达到最佳。
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