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光纤(光缆)是世界80年代出现的电信线路传输的一种先进技术设备。它能在一条线路上同时传输成千上万的电话、几十个电视节目、无穷无尽的数据通信。每秒可以传递数十亿位信息,传递信息能力比金属铜芯缆高1000倍,因而成本较低。一般每公里一条话路成本,光纤线路成本是金属铜芯电缆成本的1/3左右。另外,光纤体积小、轻便,所使用的原材料主体是到处都有的石英,可以大量节省金属材料铜和铅。光纤里尽管传输着大量信息,但其所用
Optical fiber (optical cable) is an advanced technology and equipment for telecommunication line transmission that appeared in the world in the 1980s. It can transmit thousands of phones, dozens of television programs, and endless data communications on one line at the same time. Billions of information can be transmitted per second, and the ability to transmit information is 1000 times higher than that of metallic copper core cables, which results in lower cost. Generally speaking, the cost of one voice path per kilometer is about 1/3 of the cost of the copper wire core cable. In addition, the optical fiber is small and lightweight, and the main material used is quartz everywhere, which can save a large amount of copper and lead in metal materials. Although there is a lot of information transmitted in the optical fiber, it is used