摘要
从非线性薛定谔方程出发,分析了自相位调制(SPM)和群速度色散(GVD)效应对超连续(SC)谱的贡献。利用主动锁模光纤激光器作为泵浦光源,对色散位移光纤(DSF)中的SC谱展宽进行了实验研究。理论和实验结果表明,光纤中,SC谱的产生主要是SPM和GVD共同作用的结果;对于皮秒泵浦脉冲和常规光纤,仅考虑SPM和GVD效应,就可以较精确地描述光纤中SC谱的产生过程。
Physical mechanism of supercontinuum(SC) generation in fiber was studied systematically based on nonlinear Schroedinger equation.The contributions to SC spectrum of self-phase modulation(SPM) and group velocity dispersion(GVD) were studied.And the SC generation in a conventional dispersion-shifted fiber(DSF) pumped by an actively mode-locked Er^(3+)-doped fiber laser is studied experimentally.The theoretical and experimental results indicate that SC generation in fiber depends considerably on both SPM and GVD.For picosecond pumping pulses and conventional fibers,SC generation can be described by considering the effects of SPM and second-order dispersion effects.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2004年第5期612-616,620,共6页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(69877012)
教育部博士点基金资助项目(1999005615)
