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
       

Im(Neff) of SiN waveguide as a function of hSiN and wSiN when μc is 0 eV (λ = 1550 nm).