正色散腔被动锁模光纤激光器中滤波效应的影响

陈晓东

(脉冲功率激光技术国家重点实验室(电子工程学院)，安徽合肥230037)

摘要:基于扩展的非线性薛定谔方程，理论研究了正色散腔被动锁模光纤激光器中滤波效应对脉冲

分裂特性的影响。结果表明：随着光谱滤波带宽的减小，

在超高斯光谱滤波效应和自相位调制相应的共同作用下，附加至耗散孤子脉冲的非线性啁啾将随之增加；

进一步减小滤波带宽，脉冲因非线性啁啾的积累而发生分裂。此外，若改变光谱滤波器的形状，

滤波效应对脉冲分裂的影响也将随之改变。关键词:光纤激光器；被动锁模；正色散腔；耗散孤子；光谱滤波

中图分类号:TN243；TN253文献标志码:A 文章编号:1007-2276(2013)S2-0407-05

Influences of the filter effect in passively mode 鄄locked fiber laser

with positive dispersion cavity

Chen Xiaodong

(State Key Laboratory of Pulsed Power Laser Technology (Electronic Engineering Institute),Hefei 230037,China)

Abstract:Based on the extended nonlinear Schr ?dinger equation,the influences of the filter effect on pulse splitting were investigated theoretically in passively mode ?locked erbium ?doped fiber laser with positive dispersion cavity.The results show that,as the bandwidth of the spectral filter decreases,the nonlinear chirp appended to the pulse increases under the together action of the super ?Gaussian spectral filter effect and the self ?phase modulation effect.If the bandwidth further decreases,the wave breaking of the pulse takes place.In addition,the influences of the filter effect on pulse splitting also change accordingly by varying the profile of the spectral filter.

Key words:fiber laser;

passively mode ?locked;positive dispersion cavity;dissipative soliton;

spectral filter 收稿日期:2013-08-05;修订日期:2013-09-10

基金项目:脉冲功率激光技术国家重点实验室主任基金

作者简介:陈晓东(1979-),男,讲师,博士,主要从事光纤激光器和空芯光子晶体光纤方面的研究。Email:chenxd503@https://www.360docs.net/doc/3314900024.html, 第42卷第S2期

红外与激光工程2013年12月

Infrared and Laser Engineering Dec