深度调制下VCSELs典型结构参数的研究

Study of Typical Structure Parameters of VCSELs Subject to Deep Modulation

通过构建垂直腔表面发射半导体激光器(VCSELs)的动态仿真模型,研究了有源层孔径和厚度对VCSELs大信号深度调制特性的影响。仿真结果表明,在大信号调制下,较小的有源层孔径和厚度对系统的非线性效应显现出更好的抑制能力,而且具有更高的调制带宽;合理地控制有源层孔径和厚度可以抑制系统的非线性行为,提高调制带宽。

The dependence of the modulation response of vertical-cavity surface emitting lasers (VCSELs) on aperture and thickness of active region was investigated, subject to large signal modulation by developing a visual VCSELs model used in simulation. The simulation results show that VCSELs with small aperture and thickness of active region has better immunity for irregular modulation response with higher modulation bandwidth. To control the aperture and thickness of active region reasonably can suppress the nonlinear response of VCSELs and increase the modulation bandwidth.