随着黑龙江经济的快速增长,电视和通信技术的不断发展,有线电视网络正朝着数字化和综合服务发展,光缆以其损耗小、抗干扰、可靠性高、通带宽、光纤之间不干扰、光纤细而轻、节省空间、材料资源丰富等诸多优点,随着数字电视的普及,在CATV网络干线传输中逐步代替了同轴电缆。 With the rapid economic growth of Heilongjiang and the continuous development of television and communication technologies, the cable television network is developing towards digital and comprehensive services. With its small loss, anti-interference, high reliability, wide bandwidth, no interference between optical fibers, Optical fiber thin and light, save space, material rich in resources and many other advantages, with the popularity of digital television, CATV network trunk transmission gradually replace the coaxial cable.