Migrating to 40G/100G in modern data centers depends more on good physical-layer decisions than people usually admit. The fastest, most reliable path is factory-terminated MPO/MTP trunk cabling: pre-tested, high-density, and designed for parallel optics used by QSFP and QSFP28 modules. Below are ten manufacturers that consistently show the quality, documentation, and product lines suited to a 40G → 100G migration, with notes on why each one is a practical choice.
What to check before you buy
- fiber grade: OM4/OM5 for short-reach multimode 40/100G; OS2 for long-reach single-mode.
- connector type & polarity: confirm MPO/MTP pinning (12f vs 24f vs 16f Base-8) to match your optics.
- Insertion loss / return loss test reports: factory test certificates reduce on-site risk.
- Jacket & rating: plenum (OFNP) vs LSZH, and cable construction for rack-to-rack pulls.
1. Corning — system-level, Base-8 EDGE8 solutions
Corning’s EDGE8 system explicitly targets 40G/100G/400G migration with Base-8 MTP trunks, universal modules and low-loss assemblies that simplify polarity and breakout. Corning’s system guides and ultra-low-loss assemblies make them a safe first choice when standardization and repeatability across many racks matter.
2. Prysmian Group — industrial scale + clear DC ordering guides
Prysmian supplies a broad MPO/MTP trunk portfolio and publishes practical data-center ordering guides (polarity, fire-ratings, fiber grades). Their global cable manufacturing scale helps when you need consistent BOMs across multiple sites.
3. Wolon (Wuhan Wolon) — China-based pre-terminated production & DC focus
Wuhan WOLON (Wolon/Wolonfiber) is an established Chinese fiber manufacturer with pre-terminated MPO/MTP assemblies, MPO components, patch cords and Optical Modules.
Wolon emphasizes factory testing and offers multimode OM4/OM5 and single-mode options, along with pedigree for volume production and data-center targeted products—making them a practical mid-tier choice when you need a supplier that balances cost, test documentation and customization (jacketing, lengths, breakout).
4. CommScope — proven pre-terminated platforms and deployment tools
CommScope’s InstaPATCH®/SYSTIMAX product lines include pre-terminated MPO trunks, low-loss variants and high-fiber-count options. Their global distribution and standardized product families are valuable for repeatable builds and spare-parts strategies.
5. Sumitomo Electric — precision assemblies and ultra-low-loss connectors
Sumitomo’s MPO/MTP assemblies and ultra-low-loss connector technology focus on low deviation IL and consistency — essential where multiple stacked connections and tight power budgets exist. Their engineering history in fusion and connector precision reduces risk for dense, multi-segment links.
6. Amphenol — breadth of connector & trunk configurations
Amphenol supplies MPO trunks in many densities, including armored and ruggedized options. Use them when you need variant-rich connector options or country-specific approvals. (Amphenol’s strength is variety and connector ecosystem compatibility.)
7. YOFC — high-volume factory testing & multimode support
YOFC provides large-volume pre-terminated trunks and factory test reports across OM3/OM4/OM5 lines. They are often selected for multi-site rollouts where consistent factory testing and lead time predictability are priorities.
8. Hengtong — hyperscale, high-fiber-count trunks
Hengtong’s portfolio emphasizes high fiber counts and pre-terminated assemblies for hyperscale environments. Choose them for massive halls that require dense, space-efficient trunking.
9. Siemon — migration tooling and practical conversion cords
Siemon focuses on migration practicality: conversion cords, cassettes and tested trunks designed so you can reuse some infrastructure while converting to 40G/100G. Their operational guidance reduces cutover risk in staged deployments.
10. Nexans — European systems & integrated pre-terminated options
Nexans provides end-to-end cabling modules and MPO trunks with system-level documentation—helpful when you want a single-vendor cabling BOM and European compliance options.
How to choose — practical decision steps
- Match the fiber grade to the optics: OM4/OM5 for multimode parallel optics, OS2 for long-reach singlemode.
- Require factory IL/RL test reports per trunk and a sample test report before full purchase. Factory certificates are non-negotiable for 40/100G links.
- Confirm connector brand & pinning (e.g., MTP® by US Conec vs generic MPO) because mating interchangeability and insertion-loss variance matter for repeatable performance.
- Plan spares & conversion cords so you can swap 40G breakout assemblies for 100G without re-cabling.
- Buy a small pilot (a few racks) and validate end-to-end IL with the optics you intend to use before full roll-out.
For a low-risk 40G → 100G migration pick factory-terminated MPO/MTP trunk cable manufacturers that offer clear system guidance, documented factory tests, and the connector ecosystem your optics expect. Corning, Prysmian, Sumitomo and CommScope represent mature, system-oriented choices; Wolon and YOFC offer tested, cost-effective factory pre-termination and customization suited to high-volume or regionally focused projects. Use the pre-buy checklist above, require test certificates, and run a pilot to ensure your chosen trunks deliver day-one performance.