Promises lower latencies, higher power thresholds Matthew Hughes Tue 1 Jun 2021 // 15:17 UTC Share Copy BT has started trials of hollow-core fibre optical networks to test if they can raise fixed-line speeds and produce mobile networks with lower latencies. The telco is performing the trials at its R&D campus in Suffolk's Adastral Park and aims to deploy up to 10km of fibre. It also intends to test the suitability of hollow-core networks for other more niche tasks, such as Quantum Key Distribution (QKD). BT is working with American OpenRAN vendor Mavenir, as well as Lumenisity — a startup spun out from the University of Southampton that specialises in hollow-core fibre networks.