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随着网络信息化时代的到来,长距离光传输通信技术越来越重要,例如跨距之间没有光放或电3R再生中继站点、海底光缆、荒岛连接以及跨越恶劣地形的传输等等。目前,长距离传输系统在我国的干线网络上已经有大量的应用,论述了光网络长距离传输一些关键技术、超长距离光传输方案的应用模型及各种设备在系统中所起作用
With the arrival of the era of network information, long-distance optical transmission and communication technologies are becoming more and more important. For example, there are no optical or electrical relay sites, submarine cables, desert island connections and transmission across harsh terrain between the spans. At present, the long-distance transmission system has a large number of applications in China’s trunk network, discusses some key technologies of long-distance optical network transmission, application model of ultra-long-distance optical transmission scheme and various devices play a role in the system