Large-signal dynamic behavior of distributed-feedback lasers including lateral effects
Large-signal dynamic behavior of distributed-feedback lasers including lateral effects
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DOI：
10.1109/3.301637
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发表时间：
1994-08
影响因子：
2.5
通讯作者：
S. Yu;R. Plumb;L. Zhang;M. Nowell;J. Carroll
中科院分区：
文献类型：
--
作者：
S. Yu;R. Plumb;L. Zhang;M. Nowell;J. Carroll
分析了DFB激光器的大信号特性，包括载流子密度、光子密度和折射率的横向和纵向变化。采用有效指数法和其他近似方法将复杂的三维问题降为一维。耦合波和载波速率方程，然后解决了自洽的方式。横向空间载流子烧孔和横向扩散影响DFB激光器的弛豫振荡频率和阻尼率，这取决于它们的详细结构。有效的时间平均线宽增强因子也受到影响。在对称AR涂层/SPL λ//4相移激光器中，当kL较大时，横向空间烧孔会显著恶化侧模抑制比。>
The large-signal behavior of DFB lasers is analyzed, including lateral as well as longitudinal variations in carrier density, photon density, and refractive index. The effective index method and other approximations are used to reduce the complex three-dimensional problem to one dimension. The coupled wave and carrier rate equations are then solved in a self-consistent manner. Lateral spatial carrier hole burning and lateral diffusion are found to affect the relaxation oscillation frequency and damping rate of DFB lasers, depending on their detailed structure. The effective time-averaged linewidth enhancement factor is also affected. In symmetric AR-coated /spl lambda//4 phase-shifted lasers the side mode suppression ratio can be deteriorated significantly by lateral spatial hole burning when kL is large. >