Low-power electro–optic phase modulator based on multilayer cgraphene/silicon nitride waveguide
Ji Lanting1, 2, Chen Wei1, Gao Yang1, Xu Yan1, Wu Chi2, Wang Xibin1, Yi Yunji1, Li Baohua1, Sun Xiaoqiang1, †, Zhang Daming1
       

Equivalent electrical circuits of (a) two-, (b) four-, and (c) six-layer graphene modulators.