论文标题
不对称增益抑制对多模式半导体激光器相对强度噪声特性的影响
Influence of Asymmetric Gain Suppression on Relative Intensity Noise Properties of Multimode Semiconductor Lasers
论文作者
论文摘要
我们介绍了与通过在多模层半导体激光器中缩放不对称增益抑制（AGS）相关的模态振荡相关的噪声特性的建模和模拟。该研究基于考虑自我和跨模式增益抑制机制的21振荡模式的速率方程系统的数值整合。 AGS在预定义参数方面有所不同，该参数由线宽增强因子和差异增益控制。基于模式动力学的密集模拟，我们提供了模态振荡类型的映射（AG与当前）图。当激光振荡跳动多模振荡（HMMO）时，总输出和跳跃模式的相对强度噪声（RIN）的光谱的特征是左右振荡频率（RO）周围尖锐的峰值和跳峰围绕跳跃频率。单模式振荡（SMO）的RIN水平远低于HMMO下的RIN，模式分区噪声较低的两个顺序。
We introduce modeling and simulation of the noise properties associated with types of modal oscillations induced by scaling the asymmetric gain suppression (AGS) in multimode semiconductor lasers. The study is based on numerical integration of a system of rate equations of 21-oscillating modes taking account of the self- and cross-modal gain suppression mechanisms. AGS is varied in terms of a pre-defined parameter, which is controlled by the linewidth enhancement factor and differential gain. Basing on intensive simulation of the mode dynamics, we present a mapping (AGS versus current) diagram of the possible types of modal oscillations. When the laser oscillation is hopping multimode oscillation (HMMO), the spectra of relative intensity noise (RIN) of the total output and hopping modes are characterized by a sharp peak around the relaxation oscillation (RO) frequency and a broad peak around the hopping frequency. The levels of RIN in the regimes of single-mode oscillation (SMO) are much lower than those under HMMO, and the mode-partition noise is two order of magnitudes lower.
