Researchers from the University of Southampton and Lumenisity have developed hollow optical fibers with intricate glass microstructures that confine light more efficiently, enabling faster data transmission over extended distances compared to conventional solid-glass fibers. This breakthrough, supported by Microsoft, promises transformative impact on telecommunications by boosting internet speed and efficiency. Production involves scaling down large glass assemblies to micron diameters while preserving optical properties, marking a significant advance in photonics and data infrastructure technology.