基于S型Y分支波导的石墨烯M-Z电光调制器设计

Design of Graphene M-Z Electro-optic Modulator Based on S-Y Branch Waveguide

摘要:

利用COMSOL软件设计了一种基于S型Y分支SOI脊波导的石墨烯M-Z电光调制器,并对Y分支波导曲率半径、相位臂长度、芯层间距和输入输出直波导长度等结构参数对调制器的影响进行了分析。在此基础上对电光调制器的性能指标进行了计算和优化,最终设计出了3dB带宽为143GHz、消光比为15.05dB的硅基石墨烯M-Z电光调制器。

Abstract:

In this paper, a graphene M-Z electro-optical modulator based on S-Y branch SOI ridge waveguide was designed by COMSOL, and the influence of the Y-branch waveguide curvature radius, the length of the phase arm, core spacing and input-output straight waveguide length on the modulator were analyzed. On this basis, the performance index of the electro-optical modulator was calculated and optimized. Finally, a silicon graphene M-Z electro-optical modulator with a 3dB bandwidth of 143GHz and an extinction ratio of 15.05dB was designed.