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分类号：O432UDC：D10621-408-(2015)0904-0密级：公开编号：2011031014成都信息工程大学学位论文掺铒光纤放大器的优化设计论文作者姓名：赖晓强申请学位专业：电子科学与技术申请学位类别：工学学士指导教师姓名（职称）：何修军（副教授）论文提交日期：2015年05月26日掺铒光纤放大器的优化设计摘要本文首先对EDFA的基本结构、泵浦方式、放大机理及主要应用等方面进行了详细的介绍，其次阐述了影响EDFA性能的主要指标，以此同时也对EDFA理论进行了分析。在此基础上利用光纤通信仿真软件OptiSystem7.0对EDFA的性能做优化设计，通过对EDFA中掺铒光纤长度、泵浦功率的参数进行了优化设计，得出了在不同泵浦方式下的增益特性、掺铒光纤最佳长度和输出光谱图。通过对这些数据进行分析和处理后，进而得出了最佳化的EDFA设计。结果表明对于给定泵浦功率的情况下，随着掺铒光纤长度的不断增大，EDFA的增益不断增大；当掺铒光纤长度增大到某一值后增益不仅不再增大、反而开始逐渐变小。在掺铒光纤长度给定的条件下，功率增益随泵浦功率的增大而增大，当泵浦功率达到一定值之后，增益不再增大、也不减小（基本保持不变）。泵浦工作方式（单泵浦、双泵浦和阵列泵浦）的不同，同样会影响EDFA的增益特性。关键词：掺铒光纤放大器；仿真；增益；OptiSystemOptimumDesignofErbium-DopedFiberAmplifierAbstractThispaperfirstintroducethebasicstructureofEDFA,thepump,theamplifieranditsmainapplication.ThenitexpoundsontheinfluenceofthepropertiesofEDFAandthetheoreticalanalysisofthemainindex;nextitusesopticalfibercommunicationsimulationsoftwareOptisystem7.0tooptimizetheperformanceofEDFA.Inaddition,thisarticlethroughtodesigntheerbium-dopedfiberlength,pumppowerparameters;aftergetthegaincharacteristicunderdifferentpump,thebesterbium-dopedfiberlengthandoutputspectra.Aftertheanalysisofthedataandprocessing,theoptimizationdesignofEDFAareobtained.Throughsimulation,thefollowingseveralconclusionsaremade:first,foragivenpumppower,withtheincreaseoferbium-dopedfiberlength,thegainofEDFAfirstincreased,afterincreasingtoacertainvalue,itremainsthesame.Second,undercertainconditionsoferbium-dopedfiberlength,thegainincreasedswitherbium-dopedfiberlengthfirstandfollowedwithdecreasingvalues.Finally,thepumpworks(singlepump,doublepumpandpumplaserarray)withthedifferenceinpump’sworkingstyle,thegainofEDFAcanalsobeaffected.Keywords:erbium-dopedopticalfiberamplifier;simulation;gain;OptiSystem目录论文总页数：27页1引言.....................................................................................................................................12概述.....................................................................................................................................22.1EDFA的基本结构及泵浦方式...................................................................................22.2EDFA的放大原理.......................................................................................................42.3EDFA的工作原理.......................................................................................................72.4EDFA的主要应用方式...............................................................................................83EDFA的主要指标..............................................................................................................83.1EDFA的增益特性.......................................................................................................83.2EDFA的增益饱和特性.............................................................................................103.3EDFA的噪声特性.....................................................................................................114EDFA的理论分析............................................................................................................114.1铒离子的二能级速率方程.........................................................................................114.2三能级原子速率方程.................................................................................................125掺铒光纤放大器的优化设计...........................................................................................135.1单泵浦的增益特性分析.............................................................................................135.1.1建立仿真模型.....................................................................................................135.1.2EDF长度对EDFA增益的影响........................................................................145.1.3泵浦功率对EDFA增益的影响.........................................................................165.1.4泵浦功率和EDF长度共同对增益的影响.......................................................175.2双泵浦的增益特性分析.............................................................................................185.2.1建立仿真模型.....................................................................................................185.2.2EDF长度对EDFA增益的影响........................................................................195.2.3泵浦功率对EDFA增益的影响.........................................................................215.3阵列泵浦的增益特性分析.........................................................................................225.3.1建立仿真模型.....................................................................................................225.3.2EDF长度对EDFA增益的影响........................................................................225.3.3泵浦功率对EDFA增益的影响.........................................................................24结论.................................................................................................................................25参考文献.................................................................................................................................27致谢.................................................................................................