WDM中级联EDFA噪声积累和系统功率预算  

Noise accumulation of cascade EDFAs and system power budget in a WDM system

作　　者：李文权[1,2] 魏雄 黄新邦 林位株[1] 

机构地区：[1]中山大学超快速激光光谱国家重点实验室 [2]佛山市电信局,广东佛山528000 [3]广东省电信科学技术研究院 [4]佛山市电信局

出　　处：《光通信研究》2000年第3期7-10,共4页Study on Optical Communications

摘　　要：对波分复用 ( WDM)系统中级联 EDFA噪声积累和系统功率预算进行了研究 ,认为累积噪声随着放大器的级数线性增长 ,而且还随着放大器级间损耗 (增益 )指数增长。系统总长度一定时 ,低增益、多级数比高增益、少级数方案有高得多的光信噪比 ( OSNR)Noise accumulation of cascade EDFAs and system power budget in a WDM system have been studied. It is found that noise accumulation linearly increases with the number of EDFA, and exponentially increases with lose among EDFAs. When the distance of a system is fixed, the OSNR of a system with lower gain and more series is higher than a system with higher gain and less series .To ensure the characteristic of error code, OSNR of PA should be higher than a value which is directly proportional ratio to code velocity.

关 键 词：EDFA 噪声 波分复用 光纤放大器 掺铒 

分 类 号：TN722[电子电信—电路与系统] TN253