级联环腔增益箝制掺铒光纤放大器中的拍频现象及其抑制  

Beat Phenomena and Its Suppression in Cascaded Ring-cavity Gain-clamping EDFAs

作　　者：陈怡然[1] 张崙[1] 范崇澄[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《中国激光》2002年第3期243-248,共6页Chinese Journal of Lasers

摘　　要：利用简化的Giles模型在理论上得到了级联环腔箝制掺铒光纤放大器 (EDFA)中在信道数目发生变化时可能发生的剩余信道功率的拍频现象的解释和一般规律 ,并通过数值模拟和实验验证了这一结果。考虑到其对在网络管理方案中广泛采用的调顶技术下可能对系统误码有较大的影响 。Analytical expressions, basic rules and physical interpretation of beat phenomena during channel add/drop in cascaded ring-cavity GC-EDFAs are obtained and agree well with experimental results. Measures to depress or avoid this beat phenomena are proposed for systems using tone modulation technique, where this beat phenomena may lead to severe BER degradation.

关 键 词：掺铒光纤放大器 增益箝制 环腔箝制 级联环腔 拍频现象 抑制 

分 类 号：TN72[电子电信—电路与系统]