Mutual injection locking dynamic has been demonstrated to significantly improve the modulation characteristics of semiconductor lasers However most prior studies on mutually delay-coupled semiconductor lasers have assumed that the operating conditions of the two lasers are the same (i e symmetric) This assumption is however not valid in practical situations where the operating conditions are generally different (i e asymmetric) In this study we numerically investigate the effects of symmetric or asymmetric operating conditions including delay length coupling strength detuning frequency and linewidth enhancement factor on direct modulation response of the laser system We also study the effect of the coupling delay length which based on our observation plays a significant role in the enhancement of relaxation resonance frequency that is strongly related to the direct modulation response of the laser system Based on the discuss of the effects of all operating conditions the optimized operating condition is studied
Direct Modulation Characteristics in Two Mutually Delay-Coupled Semiconductor Laser at Stable Locking Dynamic
雋堯, 王. (Author). 2020
Student thesis: Doctoral Thesis