环形腔掺铒光纤激光器频谱仿真和优化  

Spectrum Simulation and Design Optimization of Erbium-doped Fiber Ring Laser

作　　者：马曙光[1] 倪延辉[1] 柳海[1] 徐攀[2] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《空军工程大学学报（自然科学版）》2011年第3期90-94,共5页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60678018)

摘　　要：基于掺铒光纤Giles模型,建立了环形腔掺铒光纤激光器模型,按照实际所用的σ结构激光器设定仿真参数,对前向、后向以及双向放大自发辐射(Amplified Spontaneous Emission,ASE)光对激光器性能的影响进行仿真,得到激光器性能优化参数。仿真结果表明在激光器起振时,是否考虑腔内的前后向ASE光对输出光功率幅值与掺铒光纤增益粒子分布影响不大,后向ASE光是导致掺铒光纤存在截止长度的原因。实验结果和仿真结果的对比表明本模型可较准确地仿真激光器的性能,可用于对实际激光器的设计进行参数优化。Based on the erbium-doped fiber Giles＇ model,a numerical model of an erbium-doped fiber ring laser is established and stimulation parameters are set according to the actual used σ structure,which are used to simulate the impacts of forward Amplified Spontaneous Emission（ASE）,backward ASE and two-way ASE on the performance of laser,and to obtain the optimum parameters of laser.Stimulation results show that when the laser oscillates,the consideration of the direction of ASE has little influence on the output optical power amplitude or Giles gain particles distribution,while the existence of backward ASE results in the cut-off length of erbium-doped fiber.The comparison between the experiment and the simulation indicates that this model can describe the performance of laser precisely,so that it can be used to optimize the actual laser design.

关 键 词：激光技术 掺铒光纤激光器 数值仿真 放大自发辐射 

分 类 号：TN242[电子电信—物理电子学]