High-contrast gratings for multispectral laser sources based on III-V/SOI photonic integrated circuits

A computational study of high-contrast gratings (HCG) in a vertical-cavity surface-emitting laser (VCSEL) on silicon-on-insulator (SOI) for multispectral laser sources is performed. The simulation model analyzes reflectivity of the HCG grating, formed in the SOI device layer. HCG filters higher-order modes, optimizing VCSEL performance. An algorithm is developed to determine HCG parameters, maximizing reflectivity with a SOI silicon layer fixed thickness.