基于液晶可调谐滤波技术的动态增益均衡器研究  

Analysis of a Dynamic Gain Equalizer Based on Liquid Crystal Tunable Filter Technology

作　　者：吴晓平[1] 胡强高[1] 许远忠[1] 

机构地区：[1]武汉邮科院光迅科技有限责任公司,湖北武汉430074

出　　处：《光子学报》2005年第6期861-864,共4页Acta Photonica Sinica

基　　金：国家863计划通用光电子材料;器件与集成技术专题资助项目(2002AA312200)

摘　　要：提出了一种基于液晶技术的新型可调谐滤波器结构,详细介绍了这种新型液晶可调谐滤波器的结构及其工作原理,用琼斯矩阵法推导出其光传输矩阵,得出了其光透过率表达式,并在数值上进行了仿真,得出了其幅度与相位的调制特性.同时分析了采用这种液晶可调谐滤波器八级级联组成动态增益均衡器的遗传算法优化仿真结果.利用优化得出的参数值,对该动态增益均衡器进行了实验,得出了DGE完整的光增益透过谱,实验结果与理论分析相吻合.A novel optical tunable filter based on liquid crystal technology is reported in this paper. The structure and principle of this novel liquid crystal tunable filter are presented carefully, and then the optical signal transmission matrix and expression are deduced by the Jones Matrix way, the modulated characteristics of the LCTF's amplitude and phase are achieved by numerical simulation. The DGE based on eight cascaded LCTFs are analyzed and emulated with genetic algorithm, and the experiment of DGE is realized with the parameters of the simulation results, the whole optical transmission spectrum are gained, and these experimental results agree well with the theoretical analysis.

关 键 词：液晶可调谐滤波器 琼斯矩阵 遗传算法 动态增益均衡器 

分 类 号：TN715[电子电信—电路与系统]