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AND WE'LL... quickly, efficiently and cleanly blow your fibre for you.
Blown Fibre the overview
When you need to install a new length of fibre, how would you describe the process? Clean, quick, simple, efficient... future proof?
If that sounds wide of the mark in your experience, it's quite possible you're not taking advantage of the best practice installation method: blown fibre.
Blown fibre is as simple as it sounds: take some fibre optic cable, and propel it down a length of pre-installed tubing (duct) with a combination of air and mechanical pushing.
No pools of jelly, no wasted coils of slack sitting around, no struggling, no frustration.
what you can expect
We can do as much, or as little as suits you:
- If you want to take care of duct installation, we'll provide a comprehensive pre-installation briefing with site preparation support — or we can take on the full job for you
- Termination equipment included: 1U rack mount panels, 0U boxes or wall-mount ODFs
- Duct tube and fibre included: 2-12 fibres per tube, 1-24 tubes per duct cable
blown fibre advantages
Traditional installation versus blown fibre — what's the difference?
Traditional fibre installation
the installation process
Like we say, it's quick, clean and efficient
1. Fibre tubes/bundles
- Also known as duct, the tubes are installed empty, ready for fibre insertion
- This part of the installation can be done by in-house data centre staff with minimal training
- The only requirement at this stage is to ensure that the minimum bending radius is observed, to ensure damaging/performance-inhibiting kinks aren't introduced
2. Fibre units installed
- 2-12 fibres are fed into the duct using a special cable "jetting" machine
3. Fibre pigtails attached
- The fibre is terminated by fusion-splicing an optical connector. Up to six ducts (12 fibres in each) can be terminated in a 3U rack-mount shelf
when is blown fibre used?
Practical applications of blown fibre
Multiple Dwelling Units (MDUs)
Blown fibre is a quick, tidy and practical way of getting fibre into targeted rooms within a building. As the diagram below shows, where a riser (typically present as a services void for delivering utilities to each room) has been pre-installed with multi-core tube bundles (a length of duct cable of holding multiple lengths of fibre) it is possible to jet fibre from a central point, directly to the required location in the building.
The same approach can be used in office buildings and data centres (for connecting specific cabinets/networks).
blown fibre jargon buster
Glossary of terms
Cable jetting machine
Using a combination of mechanical and air-assisted pushing, the cable jetting machine quickly feeds fibre down a length of pre-installed, durable plastic duct.
Decibel (Db) or Optical loss
Where a length of fibre is interrupted (e.g. where two fibres are joined together) or otherwise terminated (e.g. where connectors are attached) "link loss" will occur. Decibel loss is a way of expressing the degree of signal degradation through link loss. OTDR equipment can be used to identify points of degradation along a length of fibre. By using techniques such as fusion splicing to join lengths of fibre/attach connectors, decibel loss can be minimised.
Light-weight and durable with a low-friction lining, duct is protective tubing into which fibre lengths are inserted, using a cable jetting machine. For internal installation (where a risk of fire is present) duct is specified as Low Smoke Zero Halogen.
Used in cable termination, a fibre pigtail is a piece of fibre with an optical connector at one end (for plugging into a patch panel) and exposed fibre at the other. The exposed end is fusion spliced onto a length of fibre.
A length of fibre cable.
See (Micro) Duct
A method of terminating/joining fibres or affixing connectors to fibre to maintain optical quality by minimising decibel loss. Fibre ends are cleaved (cut) perfectly at 90 degrees, before being cleaned, and then fused together using highly localised heat (quite often an arc of electricity).
Low Smoke Zero Halogen
Where cables are installed indoors, they can be specified to meet fire regulations; LSZH duct is made from flame-retardant polymer.
Minimum bending radius
The degree to which a cable can be bent without introducing damaging and/or performance inhibiting kinks. Observing the minimum bend radius is an important consideration during the installation of fibre duct.
OTDR (Optical Time Domain Reflectometer)
An OTDR device is used to measure the performance of live fibre optical cabling after new installations or as part of fault finding/diagnostics exercises in existing installations.
Get in touch
We're here to help with blown fibre
Ready to talk? Whether you're coming to us armed with all the knowledge you need, and just need to iron out the final details, or you'd like the full lowdown on how our blown fibre service can make cable installation easier for your business, we're ready and waiting to help.
0800 2888 680
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