All-Optical Hybrid VO $_\text{2}$ /Si Waveguide Absorption Switch at Telecommunication Wavelengths

Vanadium dioxide (VO$_{2}$) is one of the most promising materials for developing hybrid photonic integrated circuits (PICs). At telecommunication wavelengths, VO$_{2}$ exhibits a large change on the refractive index ($\Delta n \sim 1$ and $\Delta \kappa \sim 2.5$) between its insulating and metallic state. Such insulating-to-metal transition (IMT) can be triggered by light, which could enable all...