基于半导体光放大器四波混频原理的光采样  

Optical Sampling Based on Four-Wave Mixing Theory in Semiconductor Optical Amplifier

作　　者：刘茂桐[1] 杨爱英[1] 孙雨南[1] 

机构地区：[1]北京理工大学信息科学技术学院光电工程系,北京100081

出　　处：《光学学报》2008年第1期151-158,共8页Acta Optica Sinica

基　　金：教育部光通信和光波技术重点实验室(北京邮电大学)开放基金资助课题

摘　　要：建立了可研究强超短光脉冲放大特性且包含自由载流子吸收、受激辐射、双光子吸收、光谱烧孔和超快非线性折射效应的半导体光放大器理论模型,用以建立脉冲四波混频模型,并进一步仿真了基于半导体光放大器的光采样过程,重点讨论了自由载流子吸收、双光子吸收效应对采样特性的影响。仿真结果与实验结果相符。A new theoretical model is presented to investigate the amplification of strong ultrashort optical pulses in semiconductor optical amplifiers, while taking free-carrier absorption, stimulated emission, two-photon absorption, spectral hole burning and ultrafast nonlinear refraction into account. Based on this model, the pulsed four-wave mixing model is developed to further simulate the optical sampling based on four-wave mixing theory in semiconductor optical amplifiers. The influences of free-carrier absorption and two-photon absorption on sampling characteristics are emphasized. The simulation results are in agreement with reported experimental results.

关 键 词：非线性光学 光采样模型 速率方程 自由载流子吸收 双光子吸收 四波混频 

分 类 号：O437[机械工程—光学工程]