Superluminal and slow light propagation in SOA based on coherent population oscillations  

作　　者：王甫 王智 吴重庆 孙振超 

机构地区：[1]Institute of Optical Information, Key Lab of Luminescence and Optical InformationTechnology, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China

出　　处：《Chinese Optics Letters》2015年第13期61-65,共5页中国光学快报（英文版）

基　　金：This work was partly supported by the National Natural Science Foundation of China （Nos. 61275075 and 11274037）, the Natural Science Foundation of Beijing （Nos. 4112042 and 4132035）, the Specialized Research Fund for the Doctoral Program of Higher Education （No. 20120009110032）, and the Beijing Jiaotong University （No. 2012JBM103）.

摘　　要：Based on the general mechanism of the coherent population oscillations, we propose the fundamental harmonic fractional delay （FHFD） to evaluate the superluminal and slow light propagation in semiconductor optical amplifier （SOA）. The sinusoidal and square-wave signals in SOA are investigated with the propagation equations. It is shown that the superlnminal and slow light always accompany the signal distortion, and FHFD depends on the signal distortion as well as the incident power, the modulation frequency, and the optical gain.Based on the general mechanism of the coherent population oscillations, we propose the fundamental harmonic fractional delay （FHFD） to evaluate the superluminal and slow light propagation in semiconductor optical amplifier （SOA）. The sinusoidal and square-wave signals in SOA are investigated with the propagation equations. It is shown that the superlnminal and slow light always accompany the signal distortion, and FHFD depends on the signal distortion as well as the incident power, the modulation frequency, and the optical gain.

关 键 词：SOA 超光速 振荡 布居 相干 光传播 半导体光放大器 方波信号 

分 类 号：TN722[电子电信—电路与系统] O412.1[理学—理论物理]