Multi-Core Fibre Technology Analyzed
STL and Colt have successfully tested a new type of fiber optic cable called Multi-Core Fibre (MCF) in London. This testing showed MCF could be a really good way to build fast, reliable networks for things like artificial intelligence and cloud computing. It’s like having multiple wires bundled together in the same space, making it much more efficient.
Key Points
- STL & Colt tested MCF in London’s metro network.
- MCF packs 4 cores into a single fiber size.
- Achieved 800 Gbps line rate for 100GE and 400GE services.
- Trial covered 9km and 63km distances between Colt Points of Presence.
- Comprehensive testing validated performance across key fiber metrics.
- This marks a step towards ultra-high capacity networks globally.
How the Test Worked
The trial involved deploying STL’s Multiverse Multi-Core 4-core Fibre cable between two locations operated by Colt, which are called Points of Presence (PoPs). These PoPs are like hubs where internet data connects. The cable ran for about 9 kilometers and 63 kilometers, and they were testing how fast the data could travel.
During the test, they used special equipment to measure how well the cable worked. They checked things like how much data could be sent at once (throughput), how accurately the data traveled (Chromatic Dispersion and Polarization Mode Dispersion), and if there were any problems with interference (crosstalk). All of these measurements were within acceptable limits.
What Makes MCF Special
What’s really cool about this MCF technology is that it can fit four times the amount of data into a single fiber optic cable that’s the same size as regular fiber. This means more speed and capacity without needing bigger cables. The cable keeps the coating size at 250/200 micrometres, keeping things consistent.
STL was one of the first companies to move this technology from the lab to real-world use. They’re providing the entire package – the fiber, cables, and the way to connect them – so it’s ready for networks to use. This is important for businesses needing fast internet connections for important things like AI and cloud computing.
“This successful trial demonstrates the potential of Multi-Core Fibre to revolutionize network connectivity and support the demands of the digital economy.”



