Blown Fibre (or Air Blown Fibre)?

The blown fibre technology was invented by British Telecom at their Research Laboratories in Martlesham Heath, Ipswich, back in the early 80’s.

The primary functions of the technology are:-

  • Defer fibre costs by deploying minimum amount of fibres on phase 1.
  • Minimal disruption to existing network users during future expansion due to the installation of the microducts.
  • Modular based design, the ability to connect new customers and install new fibre when required
  • Easier to upgrade the type or fibre count compared to traditional methods.

Basic concept.

Stage one – The installation of the microducts, using traditional underground methods such as:


  • Trenching
  • Mole ploughing
  • Narrow/micro trenching
  • Pulling into existing ducted networks
  • Sewer installation


  • Fig 8 style
  • Catenary

In building

Please note microducts can come in a range of sizes and bundles and all the above solutions are compatible with each other which is another major factor when choosing the network solution.

Stage 2 is the installation of the Fibre unit or Micro/mini cable, this is completed by using a specialist cable machine and compressor. Installation distances vary depending on the microduct and size of fibre. Specifications from both the suppliers of the microduct and fibre cable can affect the blowing distance.

The founder of Noble Fibre Solutions Ltd has been heavily involved in the research and development of the blown fibre products and machines so can guide you in the right direction from suppliers to design and installation including the training of personnel working on the project.

Please get in touch and any inquiries/advice.