摘要
在HFC光网络段中 ,可利用EDFA来延长系统的传输距离。采用优化设计法对HFC网络进行工程设计 ,就其对HFC网络性能指标影响展开讨论。分析表明 :加入EDFA后 ,对CSO ,CTB基本没有影响 ,而对CNR影响较大 ,当光网络距离小于 2 94km时 。
EDFA can be used to extend transmission distance in optical network section of HFC network. EDFA’s effect on HFC network performance is discussed through optimizing engineer design. The conclusion shows that CSO and CTB can almost not be affected while CNR can be affected heavily after inserting EDFA. When an optical network distance is less than 294 km, the dispersion can be ignored.
出处
《中国有线电视》
北大核心
2003年第9期14-16,共3页
China Digital Cable TV
