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).
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 am...