In this paper, a graphene–dielectric–graphene modulator with a dual-ring resonator structure is designed. To achieve the dynamic modulation of the light intensity, the modulator is combined with the selective frequency filtering characteristic of the dual-ring resonator and the electrically tunable characteristic of the graphene. The finite element method is used to study the radius of the ring, the dielectric material, the wavelength and the chemical potential of graphene. The simulation results show that when the incident wavelength is 1580 nm, the chemical potential drops from 0.854 to 0.834 eV, for a 5 μm-long graphene light modulator, the extinction ratio of the modulator reaches 7.56 dB. Compare the previously proposed graphene light modulator, the device can not only be combined with the high extinction ratio and small size, but also has the high speed modulation rate, which is of great significance for large-scale production and integration of optoelectronic devices.

中文翻译：

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基于双环谐振腔结构的石墨烯光调制器

在本文中，设计了一种具有双环谐振器结构的石墨烯-电介质-石墨烯调制器。为了实现光强的动态调制，调制器结合了双环谐振器的选择性频率滤波特性和石墨烯的电可调特性。采用有限元方法研究石墨烯的环半径、介电材料、波长和化学势。仿真结果表明，当入射波长为 1580 nm 时，化学势从 0.854 eV 下降到 0.834 eV，对于 5 μm 长的石墨烯光调制器，调制器的消光比达到 7.56 dB。对比之前提出的石墨烯光调制器，该器件不仅可以结合高消光比和小尺寸，