Fibre Optics
Fibre carries a network further than copper can, and it doesn't pick up interference on a pole in an open yard. We install, splice, terminate and test single-mode and multimode fibre, and test existing fibre to find out where a problem is.
Scope of work
Each part of the system, and what we do on it.
| Part | What we do |
|---|---|
| Cable | Single-mode and multimode fibre for backbones, risers and runs between buildings |
| Splicing | Fusion splicing on site, protected in splice trays and enclosures |
| Termination | Connectors, patch panels and wall enclosures, every strand numbered and labelled |
| Testing | Loss testing and OTDR testing, with the traces and results handed over |
| Inspection | Connector end-face inspection and cleaning, a common fix for links that drop |
| More capacity | CWDM and DWDM to carry more on the strands already in place, instead of pulling new fibre |
| Fibre to the building | GPON and fibre-to-the-building testing and verification |
| Pole cameras | Fibre out to pole cameras and remote cabinets, where copper won't reach |
The final scope follows the drawings, the site walk and what each trade supplies.
Finding a fault with OTDR testing
A loss test tells you that a fibre is losing too much light. An OTDR tells you where. It sends pulses down the fibre and measures what comes back, so a break, a tight bend or a dirty connector shows up at a specific distance along the cable.
- 1
- Launch
- Where the test set connects. The first spike is its own connector.
- 2
- Fusion splice
- A small step down and no spike: a little light is lost and none is reflected. A tight bend looks the same.
- 3
- Connector
- A mated pair of connectors reflects light, so it shows as a spike and then a step. A dirty one loses more.
- 4
- End of the fibre
- A last spike, then only noise. A break looks like this too, but short of where the run should end.
Need fibre optics work?
Tell us about the building and what you need. A few lines is enough; drawings can follow by email.