1.55-μm VCSEL with polarization-independent high-index-contrast subwavelength grating mirror on SOI

We proposed and fabricated a vertical-cavity surface-emitting laser (VCSEL) incorporating a polarization-independent high-index-contrast subwavelength grating (HCG) mirror on silicon-on-insulator (SOI) for a novel polarization-bistable device on a silicon substrate. The HCG-VCSEL will find a wide variety of applications for all-optical signal processing such as optical buffer memories and optical switches, as well as light sources for optical interconnection. In this paper, our recent results on a 1.55-μm VCSEL with polarization-independent HCG mirror on SOI are overviewed.