Fibre Optic
There are two basic types of fibre optic - Single and Multimode.
Single Mode is used when even greater distances are necessary. For example when connecting to the much-loved speed cameras that are a feature of our motorways.
We focus on Multimode fibre optic cabling which is more commonly used for vertical (backbone) cabling in single-site business, education and administration environments.
Fibre optic cabling can seem very confusing, not least because a number of different standards of cable and connections have evolved over time. We typically install multimode Indoor/outdoor tight Buffered LSOH OM3 50/125 OM4 SD125 but offer all types.
- Multimode can be used to transmit data up to distances of 300m at 1000mbps. Cables can be installed with between 4 and 24 cores to provide multiple links or redundancy (each link requires 2 cores). Patch leads can be supplied on demand.
- The major benefit of fibre optic cable is the capability to transmit data at exceptionally high speed over long distances. This is achieved with laser light which is not prone to degradation over distance, travelling down small glass tubes. The secondary advantage is it's resilience to external influences such as weather, water, electrical interference & lightning.
This means fibre cable can be run in environments where copper cabling would be prone to interference and cable degradation, such as under water, next to mains cables and power lines, in factories with high RF, and powerful motors or welders which produce large electrical spikes...
Fibre Connections
Fibre cable can be terminated with four main connection types. ST, SC, LC & MTRJ. The most common are SC and high density LC connectors.
Terminations
Fibres can be terminated by fusion splicing, hot melt & polish or Crimp terminations. Fusion Spliced pigtails are the preferred method with loose tube fibre.
Testing
There are two types of testing:
- Light loss in Db, this is level one testing which shows the amount of light loss over the link. This level of testing is usually satisfactory for most applications.
- Level two, Optical Time Domain Reflectometer, OTDR, will produce a trace of the optical fibre showing length, any joints, splices and the attenuation of laser levels.
OTDR testing is normally used for locating faults in fibre optical cables.
DNI Data & Electrical Installations Ltd offers both single mode (OS2) and multi-mode (OM3, OM4) fibre installations to businesses of all sizes and requirements. Our highly experienced installers have worked on everything from single office spaces to challenging outdoor installations.
- OM1
OM1 fibre optic cable is a traditional 62.5/125 multi-mode fibre cable. Available in either tight-buffered or loose tube construction, OM1 is a very basic form of fibre optic cable by today’s standards. Offering support for gigabit ethernet samsung digital camera only up to lengths of 275m, it is slowly being phased out of modern data networks, in favour of higher specification alternatives. - OM2
OM2 fibre optic cable refers to the 50/125 traditional fibre cable. Capable of supporting gigabit applications up to 550m apart, OM2 cable has proved very popular and our customers with small fibre networks often prefer this over its predecessor, OM1. - OM3
The present decade has seen unprecedented advances in the development of multimedia. These advances have left consumers needing more and more broad bandwidth to run audio and video applications and, as a result, many organisations now require their network to transmit data at 10-Gigabits per second.Much like category 6a cable can transmit 10-G signals through copper cable, OM3 can transmit 10-G signals through multi-mode fibre optic cable. As OM3 cable can transmit 10GbE across distances of up to 300m, it is very much the current generation of fibre optic backbone cabling and is a natural progression from the successful OM2 standard. - OM4
OM4 is likely to be the future of short-distance fibre optics for two primary reasons. Firstly, it can provide OM3 standard 10-G signal speeds across a distance of as much as 550m and secondly, because it can support extremely fast optical fibre signal speeds of 100-Gigabits per second across a distance of 125m. If you are looking to future-proof your network then OM4 is certainly worth considering.
Blown Fibre Installation Services
What Is 'Blown Fibre?
Used predominately over large distances, blown fibre describes the process of using compressed air to send fibre cabling through tubes to its destination. Drastically lower costs and eliminating unnecessary wastage, ‘blowing’ fibre is ensures the most practical deployment of wired network designs.
Registered in England & Wales: 06813779
VAT Registration: GB 947223025
Accredited By:
