Design of Silicon on Diamond Grating Couplers

This study examines the efficiency of grating couplers for connecting silicon on diamond (SOD) integrated waveguides to optical fibers. We begin by analyzing optimized uniform gratings and then apply linear apodization to boost efficiency. Apodization is used in two ways: over a partial segment of the grating, and over the complete grating. The research results highlight the effects of apodization on directionality, mode matching, and overall efficiency, offering insights for enhancing the performance of grating couplers in diamond photonics applications.