一、光纤通信的优越性光纤通信是以玻璃纤维作为传输介质来传送光信号的,它具备现有通信手段所没有的许多优点:(1)频带宽,传输容量大;(2)完全没有电磁干扰,没有串音;(3)重量轻,光缆易弯曲;(4)绝缘性能好,抗辐射、抗腐蚀能力强;(5)损耗低,传输距离远(无中继距离,见表1);(6)原材料来源丰富、造价低;(7)便于传输数字信号,最宜于实现综合业务数字 First, the superiority of optical fiber communication Fiber optical fiber transmission as a medium to transmit optical signals, it has many of the advantages of existing communication means: (1) the bandwidth, transmission capacity; (2) there is no electromagnetic Interference, no crosstalk; (3) light weight, flexible cable; (4) good insulation properties, anti-radiation, anti-corrosion ability; ; (6) abundant sources of raw materials, low cost; (7) facilitate the transmission of digital signals, the most suitable for the realization of Integrated Services Digital