UCL Researchers Set New Fiber Optic Speed Record

A team of engineers, including researchers from University College London (UCL), has shattered the previous record for data transmission speed using an existing optical fibre link. They achieved an astounding 450 terabits per second, a 50% increase from their last record in November. This breakthrough demonstrates the untapped potential of current infrastructure and could have significant implications for future AI networks.

The record-setting transmission utilised an existing optical fibre link between UCL’s Roberts Building and the Telehouse North data centre in London. By broadening the bandwidth with additional frequency bands—O, E, and S bands—the team sent data across nearly 1,000 extra channels. This approach vastly surpassed conventional methods, which typically rely on the C-Band and L-Band. The feat highlights how current optical fibres can be adapted for higher data demands, aligning with future needs in AI technology.

This achievement marks a pivotal step in maximising the potential of existing optical fibre networks. While immediate benefits for home internet speeds might not be forthcoming, the findings are a crucial proof of concept. They suggest that significant data capacity expansion is feasible, paving the way for advancements in AI infrastructure and supporting burgeoning data demands globally.