Review of chalcogenide glass integrated photonic devices (Invited)

In recent years, chalcogenide glasses have attracted much attention in the field of integrated photonic devices because of their ultra-wide infrared transmission spectrum, high linear refractive index, extremely high optical nonlinearity, and ultrafast nonlinear response. Firstly, the fabrication of chalcogenide glass integrated optical waveguides was reviewed, the progress of chalcogenide integrated photonic devices in infrared sensing and high-performance nonlinear applications was summarized. Then, the chalcogenide phase-change photonic devices in optical switching, optical storage, and optical computing were introduced. Finally, the current problems in chalcogenide glass photonic devices were summarized, and the future research directions were prospected.