微反射镜阵列动态增益均衡器动态响应优化及其平坦实验  

Optimization of Dynamic Response for Dynamic Gain Equalizer Based on Micro Mirrors Array and Its Flatten Experiment

作　　者：宋镜明[1] 阮玉[1] 

机构地区：[1]华中科技大学光电子工程系,武汉430074

出　　处：《光学与光电技术》2005年第3期5-9,共5页Optics & Optoelectronic Technology

基　　金：国家自然科学基金(60407002)资助项目

摘　　要：在长距离骨干网和光节点中,多个掺铒光纤放大器(EDFA)级联造成纹波及在光节点进行波长上下载时,由于通道中信号光的功率改变从而使EDFA的增益曲线也会变化,由此产生的非线性提出了对增益进行动态均衡的要求,对通道光功率的动态均衡是非常必要的。介绍了一种基于微机电系统(MEMS)反射镜阵列的动态通道均衡器(DCE)。为了优化其动态特性,需要对致动器进行建模并优化控制算法,通过数值分析和实验数据确定模型参数,并且仿真结果与实验符合。最后,进行了4通道的动态均衡实验,系统响应时间小于5ms,信号的超调量得到了改善,纹波可以控制在0.5dB以内。In long haul and optic node, optical signal needs dynamic power equalization due to the ripple of serial link EDFA as well as the signal power change in optic signal adding and dropping case. It is imperative to equalize the optic power in multi channel. In this paper, a kind of DCE ( Dynamic Channel Equalizer ) based on MEMS ( Micro Electronic Mechanic System ) reflecting mirrors array is introduced. Modeling the actuator is necessary for optimizing its dynamic response time. To certify the parameters in the model, experiment and mathematic calculations are both exerted. The simulated curve fits the experiment very well. Finally, we equalized 4 channel optic signal and the system response time is less than 5 ms. The over shooting of signal is reduced. Gain ripple can be less than 0.5 dB.

关 键 词：MEMS 动态增益均衡器 光节点 EDFA 

分 类 号：TN929.1[电子电信—通信与信息系统]