Low-Loss and Broadband Nonvolatile Phase-Change Directional Coupler Switches
Low-Loss and Broadband Nonvolatile Phase-Change Directional Coupler Switches
An optical equivalent of the field-programmable gate array (FPGA) is of great interest to large-scale photonic integrated circuits. Previous programmable photonic devices relying on the weak, volatile thermo-optic or electro-optic effect usually suffer from a large footprint and high energy consumption. Phase change materials (PCMs) offer a promising solution due …