有关石墨烯微环调制透射曲线问题

[835347341]

Hello teachers, I simulated graphene micro-ring resonator with FDTD and MODE, and analyzed the effective refractive index versus chemical potential curve of graphene silicon waveguide, using the principle of graphene's absorption of light (the effective refractive index imaginary part changes from 8.90961e-06~0.00439), which is the same as the rate of change in the thesis, but why did I embedded the ring-shaped 2d graphene material into the silicon ring and when modulating the chemical potential (0-1eV), the resonance wavelength changes very little? The modulation cannot be realized.

各位老师你们好，我用FDTD和MODE仿真石墨烯微环谐振器，分析了石墨烯硅波导的有效折射率随化学势的变化曲线，利用石墨烯对光的吸收原理（有效折射率虚部变化为8.90961e-06~0.00439），与论文里的变化率一致，但是为什么我把环形2d石墨烯材料嵌入硅环中，调节化学势时（0-1eV），谐振波长变化很小呢？不能实现调制

 

 

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[Kirill]

This topic has been moved to the Photonics – Chinese forum. Thank you! 

[835347341]

Hello teachers, I simulated graphene micro-ring resonator with FDTD and MODE, and analyzed the effective refractive index versus chemical potential curve of graphene silicon waveguide, using the principle of graphene's absorption of light (the effective refractive index imaginary part changes from 8.90961e-06 to 0.00439), which is the same as the rate of change in the thesis, but why did I embedded the ring-shaped 2d graphene material into the silicon ring and when modulating the chemical potential (0-1eV), the resonance wavelength changes very little? The modulation cannot be realized.

[zhang.chen]

谐振波长偏移主要取决于有效折射率实部的变化，建议检查石墨烯硅波导的有效折射率实部，以及其他材料参数。

微环的谐振波长偏移Δλ与Δn_real和环周长相关。若环尺寸或Q值设计不当，可能导致灵敏度低。

调整网格精度。

以上方案，可以尝试调整一下

 

[835347341]

感谢感谢。