强激光与粒子束2012，Vol.24Issue(6)：1357-1364,8.DOI:10.3788/HPLPB20122406.1357
高斯脉冲在半导体光放大器中传输的解析表征
Analytical characterization of Gaussian pulse propagation in semiconductor optical amplifiers with dispersion
摘要
Abstract
Analytical characterization of un-chirped Gaussian pulse and chirped Gaussian pulse propagating through a semiconductor optical amplifier (SOA) is presented under consideration of material loss and dispersion.The physical mechanism of interaction between Gaussian pulse and semiconductor material is analyzed.Energy gain,pulse width as well as frequency chirp of Gaussian pulse output from SOA are investigated.The results demonstrate that linewidth enhancement factor,dispersion coefficient and feature parameter all play important roles in deciding the output pulse characteristic.The material dispersion has no obvious impact on gain compression induced by group velocity dispersion.The pulse width is broadened under the combined effect of material dispersion and group velocity dispersion.When a chirped Gaussian pulse propagates in an SOA,the same chirp component means the same gain compression no matter the chirp is positive or negative.The gain compression becomes serious with the enhancement of initial chirp.The maximum value of output pulse chirp shifts towards the smaller value of feature parameter with the increase of linewidth enhancement factor when an original un-chirped Gaussian pulse inputs.On the other hand,the output pulse chirp first increases then falls sharply,and finally reaches a steady value when a chirped Gaussian optical pulse inputs.关键词
高斯脉冲/线宽增强因子/色散/频率啁啾Key words
Gaussian pulse/ linewidth enhancement factor/ pulse broadening factor/ frequency chirp分类
数理科学引用本文复制引用
贺炜,惠战强,吴惠民..高斯脉冲在半导体光放大器中传输的解析表征[J].强激光与粒子束,2012,24(6):1357-1364,8.基金项目
Supported by Foundation of Shaanxi Educational Committee (11JK0901) （11JK0901）
