有线电视光缆传输系统指标的分析与设计  

The Analysis and Design of Cable Trunk Targetin Cable TV System

作　　者：孙由祥[1] 杜之涛[1] 蒋玉国[1] 

机构地区：[1]河北科技大学科技处,石家庄050054

出　　处：《河北工业科技》1999年第2期32-35,共4页Hebei Journal of Industrial Science and Technology

摘　　要：介绍了有线电视网中ＡＭ 光缆干线传输综合指标的分析与设计。由于ＤＦＢ激光器间的非线性有较大差异，故引入了光链路这一参数。当把这一参数引入有线电视光缆干线设计时，可根据有线电视光缆系统不同传输距离、光接点的分配指标和光缆干线传输系统的实际情况，计算光链路损耗，以确定光端设备的选型，从而进一步确定光缆干线传输系统的设计。The analysis and design of AM cable trunk target in close circuit TV system is discussed in the paper.Because of the nonlinear difference of DFB lasers, a parameter called “lightlink” was introduced to make things clear.In order to select the proper type of the lighted apparatus.The lose of lightlink should be decided according to the different transmission distance and the real circumstances of cable transmission system.Once the cable transmission system is correctly established, the TV system index can be guaranteed.

关 键 词：AM光纤 光链路损耗 C/N CTB CSO 调制指数m 

分 类 号：TN943.6[电子电信—信号与信息处理]