DWDM(密集波分系统)作为目前大容量传输光网络,以其节省光缆资源和高速率多系统传送的特点,逐步被人们所认识和广泛应用。本文对DWDM系统的线路光功率衰减特点、倒换触发告警、倒换时间以及数据路由器HLOD OFF TIME参数设置等4个方面进...DWDM(密集波分系统)作为目前大容量传输光网络,以其节省光缆资源和高速率多系统传送的特点,逐步被人们所认识和广泛应用。本文对DWDM系统的线路光功率衰减特点、倒换触发告警、倒换时间以及数据路由器HLOD OFF TIME参数设置等4个方面进行深入研究,了解DWDM系统倒换机制与数据路由器参数设置的协调工作的特性,寻找DWDM系统承载数据GE业务的最佳参数设置,从而我们深入了解DWDM网的工作原理、保护和恢复机理等。通过分析济南联通现有DWDM网络所承载的数据业务类型、服务等级、设备现状以及相关实验测试,提出了DWDM系统和数据网路由器HLOD OFF TIME参数最佳的配置,并针对现有业务承载修改参数后的测试结果,提出最终研究结论。展开更多
In dense wavelength division multiplexing(DWDM) optical transmission systems, cross phase modulation(XPM) due to Kerr effect causes phase shift and intensity modulation in each channel, which will lead the channel cap...In dense wavelength division multiplexing(DWDM) optical transmission systems, cross phase modulation(XPM) due to Kerr effect causes phase shift and intensity modulation in each channel, which will lead the channel capacity to be a random variable. An expression of the channel capacity dealing with XPM effect is presented, and the correctness and accuracy of this method are demonstrated by numerical simulation.展开更多
文摘DWDM(密集波分系统)作为目前大容量传输光网络,以其节省光缆资源和高速率多系统传送的特点,逐步被人们所认识和广泛应用。本文对DWDM系统的线路光功率衰减特点、倒换触发告警、倒换时间以及数据路由器HLOD OFF TIME参数设置等4个方面进行深入研究,了解DWDM系统倒换机制与数据路由器参数设置的协调工作的特性,寻找DWDM系统承载数据GE业务的最佳参数设置,从而我们深入了解DWDM网的工作原理、保护和恢复机理等。通过分析济南联通现有DWDM网络所承载的数据业务类型、服务等级、设备现状以及相关实验测试,提出了DWDM系统和数据网路由器HLOD OFF TIME参数最佳的配置,并针对现有业务承载修改参数后的测试结果,提出最终研究结论。
文摘In dense wavelength division multiplexing(DWDM) optical transmission systems, cross phase modulation(XPM) due to Kerr effect causes phase shift and intensity modulation in each channel, which will lead the channel capacity to be a random variable. An expression of the channel capacity dealing with XPM effect is presented, and the correctness and accuracy of this method are demonstrated by numerical simulation.