Which fibre has a 9 μm core
OS2 fibre optic cables have a smaller core diameter (8/125 µm or 9/125 µm) to support single-mode operation, which is essential for high-performance and long-distance data transmission. The small core diameter minimizes modal dispersion, allows for higher bandwidth, and supports high-speed communication over extended distances. This design choice makes OS2 fibre ideal for applications in telecommunications and data centres where long-haul and high-speed transmission are critical.