同向抽运光纤拉曼放大器的阈值特性  

Threshold Characteristics of Forward-Pumped Fiber Raman Amplifier

作　　者：龙青云[1] 吴庭万[2] 胡素梅[3] 张秋晶[1] 吕晓兰[1] 

机构地区：[1]广东石油化工学院计算机与电子信息学院,广东茂名525000 [2]华南理工大学理学院,广东广州510640 [3]广东石油化工学院理学院,广东茂名525000

出　　处：《激光与光电子学进展》2014年第3期73-76,共4页Laser & Optoelectronics Progress

基　　金：广东省自然科学基金(s2013010012844);2013年度茂名市工农业科技计划(201318)

摘　　要：为全面分析同向抽运光纤拉曼放大器的阈值特性,基于耦合微分方程,采用龙格库塔算法,数值模拟同向抽运光纤拉曼放大器中信号光功率沿光纤的演变过程,在此基础上根据实际情况推导出同向抽运光纤拉曼放大器的阈值公式。然后,数值计算各个参数对同向抽运光纤拉曼放大器阈值特性的影响,结果表明,初始信号光功率、光纤有效长度、拉曼增益系数、抽运光和信号光频率比值增加,阈值减小;光纤有效面积越大,阈值越大。In order to analyze the threshold characteristics of forward-pumped fiber Raman amplifier （FRA）, signal power distribution along a fiber for forward-pumped FRA is provided with Runge-Kutta method based on the coupling equations. Then, the theoretical expression of forward-pumped FRA＇s threshold is obtained with considering the practical factors, and the effects of these parameters on threshold of FRA are investigated detailedly. It is found that： the threshold will decrease when the initial signal power, the effective fiber length, Raman gain coefficient or the pump and signal frequency ratio increase, and the threshold will increase when the fiber efficient area increases.

关 键 词：光通信 光纤拉曼放大器 数值模拟 阈值 同向抽运 受激拉曼散射 

分 类 号：TN929.11[电子电信—通信与信息系统]