自相似抛物脉冲光纤放大器中超短脉冲的演化特性  

The Ultra-short Pulse Evolution Characteristic in Self-similar Parabolic Pulse Fiber Amplifier

作　　者：涂成厚 雷霆 朱辉 李勇男 郭文刚 魏岱 吕福云 

机构地区：[1]南丹大学物理科学学院,天津300071

出　　处：《光子学报》2008年第5期879-882,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(60677013);国家博士点基金(20060055021)资助

摘　　要：采用色散长度、非线性长度和增益系数作为自相似抛物脉冲光纤放大器的特征参量,用分步傅里叶方法数值模拟了输入超短脉冲在光纤放大器中的演化规律·研究了色散长度和非线性长度对脉冲自相似演化的影响,获得了放大器中脉冲实现自相似演化的条件·研究了增益系数对脉冲自相似演化的形成和放大传输的影响,发现增益系数可以影响脉冲的演化进程和结果·Using dispersion length,nonlinear length and gain coefficient as the characteristic parameters of self-similar parabolic pulse fiber amplifier,the evolution of the input pulse is numerical simulated by split- step Fourier method. The influences of dispersion length and nonlinear length on the pulse＇s self-similar evolution are studied,and the self-similar evolution conditions of the input pulse are obtained. The influence of gain coefficient on the pulse＇s self-similar evolution is also investigated, and the results show that gain coefficient can influence the pulse evolution process and result.

关 键 词：自相似 超短脉冲 演化 光纤放大器 数值模拟 

分 类 号：O437[机械工程—光学工程]