Researchers at Oxford University have developed a new device that can transmit, encode, and decode information either through light or electrons. The new device should bridge the gap between traditional computers and new light computers as well as pave the way for more efficient and faster computer hardware in the future.
https://www.notebookcheck.net/Researchers-develop-first-electro-opitcal-processor-bridging-the-gap-between-electrical-and-light-based-computers.445056.0.html