Business
STL completes successful trial of Multi-Core Fibre (MCF) with Colt in the UK, powering next-gen optical connectivity
STL (NSE: STLTECH), a leading connectivity solutions provider for AI-ready digital infrastructure, today announced the successful collaboration with Colt Technology Services (Colt) for the Multi-Core Fibre (MCF) trials executed across Colt's London metro optical network in London, UK. This marks a significant milestone in real-world validation of MCF technology as a sustainable, high-capacity, cost-efficient backbone for next-generation networks supporting AI, cloud, and digital services.
About this update from Sterlite Technologies Limited
[{"type":"text","content":"COLUMBIA, S.C., Jan. 22, 2026 /PRNewswire/ -- STL (NSE: STLTECH), a leading connectivity solutions provider for AI-ready digital infrastructure, today announced the successful collaboration with Colt Technology Services (Colt) for the Multi-Core Fibre (MCF) trials executed across Colt's London metro optical network in London, UK. This marks a significant milestone in real-world validation of MCF technology as a sustainable, high-capacity, cost-efficient backbone for next-generation networks supporting AI, cloud, and digital services.","length":548,"tagName":"p"},{"type":"image","alt":"STL and Colt teams during the successful UK trial of Multi-Core Fibre (MCF), enabling next-generation optical connectivity","displaySize":"","headline":null,"caption":"STL and Colt teams during the successful UK trial of Multi-Core Fibre (MCF), enabling next-generation optical connectivity","className":"","disableSlideshowImg":false,"size":{"original":{"width":400,"height":300,"url":"https://media.zenfs.com/en/cnwgroup.com/737bd544d8392f4708d043dc11a03d07"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/Is9Mb1ydwHoxefoENG9raA--/YXBwaWQ9aGlnaGxhbmRlcjt3PTcwNTtoPTUyOTtjZj13ZWJw/https://media.zenfs.com/en/cnwgroup.com/737bd544d8392f4708d043dc11a03d07","width":400,"height":300}},"href":"https://mma.prnewswire.com/media/2867355/STL_Colt_MCF.html","hrefExternal":true,"rel":"nofollow"},{"type":"text","content":"During the trial, STL's Multiverse™ Multi-Core 4-core Fibre—built in the same cladding diameter as standard single-mode fibre (SMF)—was deployed. The trial was conducted within the London Metro network between two Colt PoPs, covering distances of ~ 9 km and 63 km. An 800 Gbps line rate was achieved with validation performed for 100GE and 400GE services. Comprehensive testing was carried out, including Chromatic Dispersion (CD), Polarization Mode Dispersion (PMD), Crosstalk, Throughput, Fault analysis, OTDR, Loss, and Optical Return Loss (ORL) measurements, all of which delivered satisfactory results.","length":611,"tagName":"p"},{"type":"text","content":"STL's MCF packs 4-cores into the same cladding diameter as standard single-mode fibre (SMF), keeping coating size at 250/200 micrometres and achieving ultra-high transmission capacity per fibre within the same diameter.","length":223,"tagName":"p"},{"type":"text","content":"ST...