nm slot

As illustrated in Figs. download slot demo 1(a) and (b), the proposed converter is based on a silicon-on-insulator (SOI) platform, with a 220 nm top Si and 2 μm SiO 2 cladding The width (W i) of the slot waveguide is set at 300 nm for specific needs and the gap (g) is fixed at 200 nm, which is compatible with standard 180 nm CMOS processes