掺镱光纤放大器增益特性的理论分析  

Theoretical Analysis on Gain Characteristics of Ytterbium-Doped Fiber Amplifier

作　　者：汪玉海[1] 马春生[1] 李德禄[1] 郑杰[1] 

机构地区：[1]吉林大学集成光电子学国家重点实验室电子科学与工程学院,长春130012

出　　处：《光子学报》2008年第5期855-859,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(60576045;60577008)资助

摘　　要：在引入光场与掺杂分布的重叠因子及忽略放大自发辐射(ASE)和光纤损耗的情况下,通过求解掺Yb3+光纤放大器(YDFA)的能级速率方程和光传输方程,得到了在稳态条件下YDFA的速率-传输方程组的解,推导出了泵浦阈值、放大器增益、最佳光纤长度的表达式.研究了泵浦光、信号光、掺杂浓度、最佳光纤长度、最佳光纤长度下增益之间的内在联系.最后对数值模拟结果进行了分析和讨论.The rate equations and light propagation equations were solved under the steady-state condition. In order to get the solution, the overlapping factors between the mode fields and the ytterbium dopant distribution is introduced, and the ASE and the loss inside the fiber is neglected. On the basis of the solution,the expressions of the pump threshold,gain and optimum fiber length were obtained. The relations were analyzed among the pumping power, input signal, ytterbium-doped concentration, optimum fiber length and gain of the optimum fiber length. The simulation results were discussed.

关 键 词：掺YB^3+光纤 光放大器 速率-传输方程 数值模拟 

分 类 号：TN252[电子电信—物理电子学]