摘要
为了分析半导体光放大器(SOA)中慢光效应,构建了基于SOA中相干布居振荡效应引起慢光现象的理论模型,分析了SOA中电流的调制频率、调制电流大小、直流电流大小、线宽增强因以及调制电流的相移与相对相位对相位延时量的影响。分析结果表明:慢光效应可以由调制电流的大小和调制频率控制;当输入直流电流小于200 mA时,对控制SOA中的慢光效果不明显;与透明电流相比,输入的直流电流较大或较小分别得到快光、慢光;当线宽增强因子不为0时,边带信号光从快光变为慢光;当相移Ψ=0°或90°时一直为慢光,当相移Ψ=180°时一直为快光;改变调制电流的相对相位可以让信号在慢光和快光之间变换。
In order to analyze the slow light effect in semiconductor optical amplifier(SOA),a theoretical model based on the slow light phenomenon induced by the coherent population oscillation effect in SOA is constructed.The effects of current modulation frequency,modulation current,direct current,linewidth enhancement factor,phase shift and relative phase of modulation current on phase delay in SOA are analyzed.The analysis results indicate that the slow light effect can be controlled by the magnitude of the modulating current and the modulating frequency.When the input direct current is less than 200 mA,the effect on controlling slow light in SOA is not obvious.Compared with the transparent current,the input direct current is larger or smaller to obtain fast light and slow light respectively.When the linewidth enhancement factor is not zero,the sideband signal light changes from fast light to slow light.It is always slow light when phase shiftψ=0°or 90°and it is always fast light when phase shiftψ=180°.Changing the relative phase of the modulating current enables the signal to be shifted between slow and fast light.
作者
朱博文
覃翠
蒋煜
许星楠
ZHU Bowen;QIN Cui;JIANG Yu;XU Xingnan(School of Information and Communication Engineering,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《光通信技术》
2022年第1期39-43,共5页
Optical Communication Technology
基金
江苏省自然科学青年基金项目(批准号:BK20191012)资助。
关键词
半导体光放大器
慢光
相干布居振荡
semiconductor optical amplifier
slow light
coherent population oscillation
