被动锁模掺镱光纤激光器中耗散孤子特性  

Characteristics of Dissipative Soliton in Passively Mode-Locked Yb-Doped Fiber Laser

作　　者：霍佳雨[1] 郭玉彬[1] 王珂[1] 

机构地区：[1]吉林大学通信工程学院,长春130012

出　　处：《北京邮电大学学报》2016年第2期30-34,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：长春市重大科技攻关计划项目(13KG28)

摘　　要：对被动锁模光纤激光器系统谐振腔中每个器件进行建模;通过数值仿真实验研究了具有严格线性啁啾的耗散孤子在谐振腔内的演化过程;分析了腔内色散与掺镱光纤的饱和能量对耗散孤子脉宽与峰值功率特性参数的影响.仿真实验结果表明,耗散孤子的脉宽随着色散的增加而变宽,峰值功率随着色散的增加而减小.增益饱和能量对耗散孤子脉宽的影响是非单调的,在仿真实验条件下,当掺镱光纤的增益饱和能量的值为70 p J时,脉宽达到最小值,而耗散孤子的峰值功率随着增益饱和能量的增加而增加,且变化趋势几乎是线性的.Dissipative soliton is one of the research hotspot in the field of nonlinear optical fiber optics because of its high single pulse energy. The characteristics of dissipative soliton in passively mode-locked Yb-doped fiber laser was studied. First,each device in the cavity is modeled. Then,the evolution of parabolic shape dissipative soliton with strictly linear chirp in the cavity is studied by numerical simulations. Finally,the influences of dispersion and gain saturation energy of Yb-doped fiber on pulse duration and peak power of dissipative soliton is analyzed. Simulations indicate that the pulse duration of the dissipative soliton becomes wider with increase of the dispersion,and the peak power decreases with increase of the dispersion. The effect of gain saturation energy on the pulse duration is non monotonic. When gain saturation energy is 70 p J,the pulse duration reaches the minimum value. And the peak power of dissipative soliton increases linearly with the increase of gain saturation energy.

关 键 词：被动锁模 耗散孤子 群速度色散 增益饱和能量 

分 类 号：TN248[电子电信—物理电子学]