Modelling of Integrated Optical Modulator using Ring Resonator with Graphene assisted SOI Ridge waveguide

In this paper, integrated optical modulators using ring resonator in graphene assisted silicon-on-insulator waveguide has been designed and simulated using FDTD. The compact ring resonator of radius 5 µm containing disc type graphene exhibited high intensity switching rate of 10 dB/V. The paper shows larger shift in resonance wavelength by the small variation in the chemical potential of graphene by covering the ring completely with the graphene. The wavelength tuning with respect to the external bias gate voltage obtained as high as 1.25 nm/V.