具有动态增益均衡特性的低噪声全光增益箝位EDFA  

All-optical Gain-clamped Low Noise Figure EDFA with Dynamic Gain Equalization

作　　者：惠小丽[1] 许玲[1] 林如俭[1] 

机构地区：[1]上海大学通信学院,上海200072

出　　处：《光电子技术与信息》2004年第4期47-50,共4页Optoelectronic Technology & Information

基　　金：上海市重点学科建设项目(2001-44)资助

摘　　要：针对全光增益箝位EDFA噪声指数恶化以及用于WDM系统时增益动态变化两个问题,提出具有动态增益均衡特性的低噪声全光增益箝位EDFA,在35 nm范围内,输入信号功率在-40 dBm到0 dBm之间变化时,增益变化被箝制在1 dB范围内,同时保持单波长输入噪声指数<4.5 dB,多波长输入增益谱不平坦度<0.4,噪声指数<5.5 dB,有效解决了以上问题.To solve the problem of high noise figure and dynamic gain variation in the WDM system,a new configuration of dynamic gain equalization EDFA was proposed.The gain variation is less than 1 dB and the noise figure is less than 4.5 dB with the input signal power ranges from-40 dBm to 0 dBm in 35 nm bandwidth,the multi-signal input gain spectra flatness is kept in 0.4 dB and noise figure is less than 5.5 dB.The proposed EDFA gives an efficient solution for the WDM system.

关 键 词：掺铒光纤放大器 全光增益箝位 布拉格光栅 噪声指数 动态增益均衡 

分 类 号：TN929.11[电子电信—通信与信息系统]