Efficient silicon grating for SOI applications

This paper proposes high efficiency 1D silicon–silicon carbide (Si–SiC) and silicon–silicon monoxide (Si–SiO) grating structures which can be used as optical interconnects in optical communication system. Here absorption, transmission and diffraction losses are considered to optimize the grating structure. The simulation results show that the reflectance is zero at the wavelength of 1 μm for silicon–silicon carbide and 1.25 μm for silicon–silicon monoxide grating structure. It is seen that the diffraction efficiency is nearly constant that is more than 99.19% in case of Si–SiC and 99.5% in case of Si–SiO grating structure with respect to detuning from Bragg's angle of incidence, which varies from −1 radian to +1 radian. This simulation is done by using plane wave expansion method.