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“中国光纤通信线路分布示意图”的按语现在,我国的光纤通信技术已趋于成熟,开始步入应用推广时期。到1986年底,全国已敷设公用通信网光缆线路近700km,安装了约30个光纤通信系统。其中,北京、上海、武汉、广州等地有多个光纤通信系统已投入使用。当然,就线路长度而言,多为短距离的。预计“七五”期间还要敷设4000km长途光缆线路。这些线路有的已着手敷设。
“Chinese optical fiber communication line distribution diagram” At the moment now, China’s optical fiber communication technology has matured, began to enter the application promotion period. By the end of 1986, nearly 700 km of fiber optic cable lines for public communications networks had been laid across the country and about 30 optical fiber communication systems were installed. Among them, Beijing, Shanghai, Wuhan, Guangzhou and other places have a number of optical fiber communication systems have been put into use. Of course, the length of the line, mostly short-term. It is estimated that 4000km long-distance optical cable lines will be laid during the “Seventh Five-Year Plan” period. Some of these lines have already been laid.