Blown Fibre
FAQs
Blown fibre is a flexible fibre optic installation method where optical fibres are blown into preinstalled tubes using compressed air. This allows you to deploy only the fibre you need today and add more later without redigging or rerouting ducts. It provides a future proof, scalable, and low disruption solution for fibre networks.
OM4 blown fibre is a multimode fibre, optimised for high bandwidth, short to medium distance applications, such as data centers or campus backbones (up to 150m for 40/100Gbps). OS2 blown fibre is a singlemode fibre, designed for long distance transmission (up to several kilometres) and high capacity backbone networks. Choosing between OM4 and OS2 depends on whether your network requires short, high speed interconnect or long haul connectivity.
Blown fibre tubes are microducts that act as protective pathways for the fibre. They:
- Protect fibres from damage and environmental exposure.
- Enable quick upgrades, new fibres can be blown in when capacity is needed.
- Support multiple fibres in a single duct, improving space efficiency.
The choice of tube size, material, and configuration depends on installation environment (indoor, outdoor, direct buried, or sub-ducted).
Key accessories include:
- Blowing machines used for compressed air to install fibres into tubes.
- Lubricants to reduce friction during blowing to extend distances.
- Tube connectors and closures ensure airtight joins between ducts.
- Sealing systems prevent water, dust, or gas ingress.
- Splitter boxes and joint enclosures for organising and protecting fibre at connection points.