Numerical Investigation of High-Speed Surface-Normal Modulator Using InP High-Contrast Grating

We propose a surface-normal optical modulator using an InP high-contrast grating embedded with electro-optic polymer. The feasibility of broad-bandwidth (>40 GHz) and low-loss (<0.22 dB) modulation is numerically demonstrated, thanks to the high electron mobility and the small optical absorption of n- InP.