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光纤作为一种具有大容量传输特性的传输介质在近年来得到广泛的应用,光纤到户的发展以及越来越多的宽带信号需要传输使得同一根光纤必须传输更多的信号,密集波分复用技术的诞生使得单一的光纤上能传输更多的数据信号。作为一种理想的传输介质光纤正在代替有线电视原来使用的同轴电缆,光纤有线电视已成为国内广播电视行业的发展趋势,密集波分复用技术使得有线电视网络中已敷设的光纤获得充分利用,这一技术在光纤有线电视中正越来越多的使用。
As a kind of transmission medium with large-capacity transmission characteristics, optical fiber has been widely used in recent years. The development of FTTH and the need of more and more broadband signals to be transmitted make it necessary for the same optical fiber to transmit more signals. Dense wave division multiplexing The birth of technology allows more data signals to be transmitted on a single fiber. As an ideal transmission medium, optical fiber is replacing the coaxial cable originally used in cable television. Optical fiber cable television has become the development trend of the domestic broadcasting and television industry. Dense wavelength division multiplexing technology has fully utilized the fiber already laid in the cable television network , This technology is more and more used in optical fiber cable television.