超长距光传输技术三峡金沙江下游光传输网的应用

Application of ultra-long distance Optical Transmission technology in the Downstream optical transmission network of Jinsha River in Three Gorges

针对金沙江下游二期光环网因地貌环境等因素无法采用中继站的方式实验远距离光传输问题,文章通过对超长距光传输技术中光接口类型、功放BA、PA、拉曼等技术的研究分析,并结合二期光环网各站点距离的统计,针对性地计算出每段站点间光衰耗和色散等参数;运用再生距离公式和色散容限公式给出光接口和放大器的最优组合方案;并通过对提出方案的光信号功率在传输线路上的损耗计算,最后给出金沙江下游光环网二期超长距站点的实际配置方案,总结出了不同光缆距离间的超长距设备配置。

Aiming at the problem of long-distance optical transmission in the second phase of the optical ring network in the lower reaches of the Jinsha River, it is impossible to use relay stations to experiment with long-distance optical transmission due to factors such as geomorphic environment. Research and analysis, combined with the statistics of the distance between each site in the second phase of the optical ring network, calculate the optical attenuation and dispersion between each segment of the site;use the regeneration distance formula and the dispersion tolerance formula to give the optimal combination of optical interface and amplifier Scheme;and by calculating the loss of the optical signal power on the transmission line of the proposed scheme,the actual configuration scheme of the ultra-long-distance site of the second phase of the Jinsha River downstream optical ring network is finally given, and the ultra-long-distance equipment configuration between different optical cable distances is summarized.