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本文介绍了SDH传输网无中继超长距离传输的方案设计,介绍了光放大设备的前向纠错技术以及拉曼效应的原理,并给出了方案设计中需要注意的问题,在文中还针对300km无中继2.5G传输做出了相应的解决方案和设备配置,对长跨段无中继SDH光传输应用具有重要意义。引言SDH网络由于传输容量大、保密性好、不易受到电磁干扰等诸多优点,在信息传输中发挥着重要作用,在实际的工程应用中,由于受到海洋、沙漠等地理条件和环境条件的限制,在长达数百
This paper introduces the scheme of SDH transmission network without relay over long distance transmission, introduces the forward error correction technology and Raman effect principle of optical amplification equipment, and points out the problems needing attention in the scheme design. In this paper, The corresponding solution and equipment configuration for 300km relayless 2.5G transmission is of great significance to the application of long span non-relay SDH optical transmission. Introduction SDH network plays an important role in information transmission because of its large transmission capacity, good confidentiality and low susceptibility to electromagnetic interference. In actual engineering applications, due to the restrictions of geographical and environmental conditions such as the ocean and desert, Up to hundreds