Prysmian BendBright Fibre Assemblies from Prysmian S.p.A. - fast custom cabling for data centres

Reviewed: ad hoc news Classics & Longseller desk. Edited and checked on 2026-06-28, 07:23. Details in the imprint.

Prysmian BendBright Fibre Assemblies snake along the back of a data centre rack, tight curves hugging metal rails without the usual tangle or fear of signal loss. A technician clicks an MTP connector into place and the line goes live in seconds.

How Prysmian packages fibre

Prysmian BendBright Fibre Assemblies are built around G.657 BendBright bend-insensitive optical fibre, which keeps signal performance stable even when cables are routed around sharp corners in crowded racks. The assemblies arrive pre-terminated, cutting on-site splicing and saving installation time.

The system uses Prysmian FlexRibbon fibre configurations in Base 12 and Base 16, terminated onto high-density interfaces such as MTP, SN and MMC or MDC connectors. That mix targets hyperscale and colocation data centres that want dense patch fields without sacrificing manageability.

Why speed of delivery matters

At this spring’s Data Centre World in London, Prysmian used the show floor to highlight that these bespoke, pre-terminated fibre assemblies can be delivered to UK sites within days once a specification is agreed. That turnaround leans on European production capacity for both fibre and terminations.

For data centre builders under pressure to bring extra capacity online quickly, cutting weeks off cabling lead times can remove a persistent bottleneck. Project managers no longer need to juggle separate orders for loose fibre, connectors and local termination teams.

Inside the assemblies

The BendBright fibre at the heart of the assemblies belongs to the G.657 family, designed for tight bending with low attenuation. In practice that means cabling can curve around rails and power trays in modern racks while maintaining link budgets for 100G, 200G or 400G channels.

Prysmian’s FlexRibbon structure stacks multiple fibre ribbons in a compact, rectangular cross-section. Technicians handling the cable report a tidy, tactile feel compared with loose-tube bundles, which makes pulling and dressing the cable less of a fight in overhead trays.

Connectors, density and formats

Assemblies ship with US Conec certified MTP and MPO connectors in addition to SN and emerging MMC or MDC formats, reflecting how data centre designers are pushing port density at patch panels. That choice lets operators match the assemblies to existing switch hardware.

Because Prysmian offers both single-mode and multi-mode fibre options, operators can specify OM4 or OS2 builds depending on link length and the optics installed in their transceivers. A single row of pre-terminated trunks can therefore feed both short-hop top-of-rack links and longer spine connections.

The human behind the service

In interviews around the launch, Prysmian’s UK service team leader Mark Evans stressed that the offer is as much about support as about fibre. His team works with data centre designers to translate patch panel layouts, fibre types and lengths into detailed assembly drawings.

Evans describes walking cold aisles with customers, tape measure in hand, to check routes and slack requirements before orders are placed. That practical step reduces the risk of cables arriving a metre short or with the wrong breakout format for the racks on site.

Warranty and risk management

Prysmian backs the BendBright Fibre Assemblies with a 25-year manufacturer’s warranty when used within defined installation guidelines. That long horizon targets data centres where cabling is expected to survive several generations of server hardware.

For operators, locking fibre supply and terminations to a global manufacturer with documented lifetime support reduces operational risk compared with mixing multiple local termination providers. Warranty paperwork also helps when negotiating service-level agreements with enterprise customers.

Where the limits show

The assemblies are tailored to high-bandwidth environments, so very small edge sites or cost-sensitive installations may still prefer simpler patch cables and local termination. Custom assemblies also demand careful upfront design work, which can slow teams unused to detailed layouts.

Once installed, changing connector standards on switches can require replacement or re-termination of entire trunks. Some smaller operators therefore stick to more generic, field-terminated cabling to keep options open, trading convenience for flexibility.

Market context and Prysmian shares

Overall, BendBright Fibre Assemblies extend Prysmian’s long-established role in data centre cabling into faster, more integrated service territory, sitting alongside its broader telecoms and power cable portfolio. The company is listed in Milan, and Prysmian shares (ISIN IT0004176001) trade on the Borsa Italiana in euros.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.