Self-pulsation in two-section DFB semiconductor lasers and its synchronization to an external signal
Self-pulsation in two-section DFB semiconductor lasers and its synchronization to an external signal
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DOI：
10.1109/3.678596
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发表时间：
1998-06
影响因子：
2.5
通讯作者：
G. Pham;G. Duan
中科院分区：
文献类型：
--
作者：
G. Pham;G. Duan
利用广义速率方程建立了无可饱和吸收体的两段分布反馈激光器的自脉动模型。在我们的模型中引入一个有效的差分增益，使我们能够考虑材料和结构的影响。自脉动的条件是从线性稳定性分析。提出了一种基于负有效微分增益的机制来解释这种激光器中自脉动的起源。考虑注入光信号，用非线性模拟方法研究了自脉动激光器的光同步。这导致一些锁定范围的属性，然后将其与实验和分析结果进行比较的确定。
A model of self-pulsation in two-section distributed feedback (DFB) lasers without a saturable absorber is developed by using generalized rate equations. The introduction of an effective differential gain in our model allows us to take into consideration both material and structural effects. The self-pulsation conditions are derived from a linear stability analysis. A mechanism based on a negative effective differential gain is proposed to explain the origin of self-pulsation in such lasers. By considering an injected optical signal, the optical synchronization of self-pulsating lasers is studied using nonlinear simulations. This leads to the determination of some locking-range properties, which are then compared to experimental and analytical results.