【摘要】 提出了一种包括载流子密度脉动 (CDP)、载流子加热 (CH)和光谱烧孔 (SHB)效应在内的半导体光放大器 (SOA)的时域动态模型。利用该模型分析了半导体光放大器中的增益饱和、超快增益动态以及光脉冲在增益饱和半导体光放大器中的波形畸变 ,其中重点考虑了超短脉冲的情况。模拟计算表明 ,对于 10 ps量级以下的短脉冲 ,分析半导体光放大器的动态增益特性时 ,不能忽略载流子加热和光谱烧孔等带内超快非线性效应的影响。更多还原

【Abstract】 An advanced time-domain dynamic model for the investigation of semiconductor optical amplifiers(SOA) is presented. The model accounts for the ultrafast gain dynamics,the gain saturation and the pulse distortion induced by carrier density pulsation(CDP),carrier heating(CH) and spectral hole burning(SHB),the focus is on the ultrashort pulse gain saturation in SOA. It is shown by numerical simulation that there is a critical pulsewidth around 10ps,below which the intraband effects cannot be neglected.更多还原