论文部分内容阅读
一、 前言 数据传输的飞速发展,不单是量的增加,而随着计算机的引入其终端系统达到了高度自动化,进而向多样化、高速化方向发展。 与此相应,传输系统已不再以惯用的声音传输系统为主,而是能作高效率的数据传输。目前正朝着多路时分制数字传输系统方面发展。 此外,最近在实现这种数字传输系统的同时,还引入了具有低衰耗、宽频带、无感应、重量轻等特点的光缆,并进入了实用阶段。光缆对于必须具备低衰耗、宽频带的数字传输线路而言是最适宜的。而且由于无感应的缘故,还有可能与高压动力线并设。因此在产业界得到广泛应用。
I. INTRODUCTION The rapid development of data transmission is not only increased in quantity, but also highly automated with the introduction of computers into its terminal system, which in turn leads to diversification and speeding. Correspondingly, the transmission system is no longer the usual voice transmission system, but can make efficient data transmission. At present, we are moving towards multi-channel, time-division digital transmission system. In addition, the recent implementation of such a digital transmission system has also introduced a fiber optic cable with characteristics of low attenuation, wideband, no sensing and light weight, and entered a practical stage. An optical cable is most suitable for digital transmission lines that must have low attenuation and wideband. And because of the non-sensing reasons, there may be high-voltage power lines and set. Therefore, it has been widely used in the industry.