Pre-Terminated Fibre Optic Cabling
Pre-manufactured fibre assemblies, built to length in our own pre-termination facility and brought to site ready to pull in and plug up.
Pre-terminated fibre moves the slow, skilled termination work off your site and into ours. On suitable projects that means at least 50% less time on site, and far less disruption while we are there.
What is pre-terminated fibre?
On a conventional installation, fibre arrives on site as bare cable and every connector is fitted there and then, by fusion splicing or field termination. It is skilled, slow work, done in the middle of your site.
Pre-terminated fibre changes the order of the job. The cable is made up in advance to the exact length the route needs, with the connectors already fitted. On site, the finished assembly is pulled in and plugged up. The industry calls it plug and play.
Core Precision builds these pre-manufactured assemblies in our own pre-termination facility. Most UK contractors order their assemblies in. We build ours, which gives us direct control over specification, build quality and programme.
That includes multi-fibre push-on (MPO) trunk assemblies and cassettes. An MPO connector carries 12 or 24 fibres in a single ferrule, with cassettes breaking those fibres out into everyday duplex ports, and MTP is the premium brand of the same connector. It is how modern data centres cable 40G, 100G and 400G links.
Pre-terminated trunk cables, protected for pulling in
MPO and MTP trunks and cassettes
Pigtails and patch harnesses
Multi-fibre assemblies built to surveyed lengths
At least 50% less time on site
Pre-termination moves the termination work away from your site and into our facility, where it is done in controlled conditions on our programme, not yours. What is left on site is pulling in, plugging up and testing.
At least 50% less time on site on suitable projects
Less disruption in live environments. No splicing rigs or consumables in an operational data hall
Assemblies built in our own pre-termination facility, not ordered in
Every assembly made up to a surveyed, specified length
Off-site manufacture runs alongside your site programme
Fibre only. UK-wide. Every project quoted individually
A recent example: half the programme moved off site
A data centre project needed a 48-core fibre link to each of 20 racks: 1,920 splices in total.
Our team spent five days building and splicing the assemblies in the pre-termination facility, then five days on site installing them. Without pre-termination, all of that work would have happened on the client's site.
20
racks connected
48-core
fibre link per rack
1,920
splices completed
5 + 5
days off site + days on site
Every pre-terminated fibre project is different, so we quote each one individually, site by site.
Tested on completion, certified for handover
Once installation is complete, we fully test every link on site using the latest calibrated Fluke test equipment. Any faults are rectified there and then, and you receive full test certification on completion.
If your project requires it, we can also carry out an optical time domain reflectometer (OTDR) test on the open-ended assembly before it is installed.
Find out more about our OTDR testing and certification services.
Pre-terminate what should be pre-terminated. Splice what should be spliced.
Pre-terminated fibre is not a replacement for splicing. It is a second tool, and knowing which one the job needs is where the value sits.
Where pre-terminated fibre wins
Live data halls, where disruption carries real cost
Rack-to-rack trunk and cassette links
Tight programmes, with the build running off site in parallel
Repeatable links at surveyed, specified lengths
Where splicing wins
Long backbone and campus routes
Links where the lowest possible loss is the requirement
Complex routes a fixed-length assembly cannot follow
Ultra-high-density ribbon and rollable ribbon networks
Core Precision offers both routes in house, including SpiderWeb Ribbon® splicing for ultra-high-density networks, alongside our ribbon fusion splicing service. We recommend the right mix for each project, and nothing more.
Surveyed and specified precisely
A pre-terminated assembly is built to a fixed length. Too short stops the job. Too long leaves slack to manage. MPO polarity and connector gender are set at manufacture too, and if the ordering is wrong, assemblies will not link up.
This is specialist design work, and Core Precision handles it as part of every pre-terminated project. We survey the routes, confirm the containment and specify every assembly before anything is built. When the assemblies arrive on site, they fit.
We work across the Excel, HellermannTyton, Corning, HUBER+SUHNER, Brand-Rex, Fujikura, Prysmian and CommScope ecosystems, so your pre-terminated fibre solutions can be specified to match the system you already run.
Pre-termination is one part of a wider job. Our fibre optic installation team handles the containment, pulling in and connection work, and our data centre cabling specialists design high-density MPO routes end to end.
FAQs
What is pre-terminated fibre?
Pre-terminated fibre is fibre optic cable made up in advance to the exact length a job needs, with the connectors already fitted. Instead of terminating every fibre on site, the finished assembly is delivered to site, pulled in and plugged up.
How much on-site time does pre-terminated fibre save?
At least 50% on suitable projects. On a recent 20-rack data centre installation, five days of assembly work happened in our pre-termination facility and five days on site, so half the programme moved off the client's site.
Are pre-terminated assemblies tested?
Yes. Every link is fully tested on site once installation is complete, using the latest calibrated Fluke test equipment, and full test certification is supplied on completion. If your project requires it, we can also run an OTDR test on the open-ended assembly before it is installed.
Is pre-terminated fibre better than splicing on site?
Neither is better in every case. Pre-terminated fibre wins where speed and low disruption matter, such as rack-to-rack links in live data centres. Fusion splicing gives the lowest loss and suits long backbone routes and complex, high-density networks. Core Precision offers both and recommends the right mix for each project.
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Alternatively, call the Core Precision Team to discuss your project