论文部分内容阅读
据日刊《映像情报》Vol.17,No.6(1985)报导日本连接旭川—鹿児岛的3400公里长光纤通信传输线路于去年2月8日中午开始正式投入使用。这使日本正式进入了光纤通信时代。该通信线路于1983年3月动工,用不到2年的时间就全部铺设完工,总耗资650亿日元。传输信息容量400Mbit/秒,相当于5760条电话线路的容量。光缆的光纤芯数各区间不尽一样,根据需要而定,从8～24芯不
According to the Japanese magazine “Photo Information” Vol.17, No.6 (1985) reported that Japan’s Asahikawa - Kashima’s 3400 km long fiber optic transmission line was put into operation at noon on February 8 last year. This has officially entered the era of optical fiber communications in Japan. The communication line started in March 1983 and completed in less than two years with a total cost of 65 billion yen. Transmission of information capacity of 400Mbit / sec, equivalent to 5760 telephone lines capacity. Fiber optic cable core number of each range is not the same, according to need, from 8 to 24 core not