Optical Communication Products · Shenzhen, China
Tel: +86 0755 23766314  ·  marketing@fotfiberoptic.com
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Measured fibre by fibreMPO to MPO Conversion Module — FOT Fiber Optic
Configure the assembly below — fibre count, type, polish, polarity, gender, jacket and length all update the specification table live.

MPO to MPO Conversion Module

SKU: FOT-MPO-CONVCAS · Cassettes, Modules & Panels

Rear MPO in, different-count MPO out, inside a cassette.

24F → 3 × 8FConversion
≤ 0.35 dBInsertion loss
LGXStandard format
100%Fibre utilisation
Conversion
24F → 3 × 8F24F → 2 × 12F2 × 12F → 3 × 8F16F → 2 × 8F32F → 4 × 8F
Fibre type
OS2 single-mode (G.652.D)G.657.A1 bend-insensitiveG.657.A2 bend-insensitiveOM3 multimodeOM4 multimodeOM5 wideband
Loss grade
Standard lossLow lossExtra low loss
Polish
APC (angled, 8°)UPC / PC (flat)
Format
LGX cassette1U 4-slot chassis2U 8-slot chassis
Configured part numberFOT-MPO-CONVCAS
Request a Quote Request Datasheet
Ships worldwide
Built to your configuration
3-year warranty

Product Overview

The cassette version of the conversion harness: high-count MPO at the rear, several lower-count MPOs on the front panel. It is how you make a legacy 24-fibre or 12-fibre trunk plant serve base-8 parallel optics without stranding a third of the fibres you already paid to install.

Assemblies are built on US Conec MTP® ferrules and terminated in a controlled environment, then measured fibre by fibre. Interferometry checks the three geometry parameters that decide whether a multi-fibre ferrule mates properly — radius of curvature, apex offset and fibre height — and every end face is inspected and graded to IEC 61300-3-35 before the dust cap goes on.

Fibre count, fibre type, polish, polarity, gender, jacket rating, leg length and overall length are all build options rather than catalogue limits. Use the selector above to configure the exact assembly and the specification table will follow your choices; the measured test report ships with the cable.

Technical SpecificationsUpdates with your selection

Optical
Conversion1 × MPO-24 rear → 3 × MPO-12 (8F loaded) front
Fiber Count24F
Ports1 rear / 3 front
Fiber TypeOS2 single-mode, G.652.D — Corning SMF-28 Ultra
Insertion Loss≤ 0.35 dB
Return Loss≥ 60 dB
Connector PolishAPC — 8° angled, green housing
PolarityStraight-through position mapping, documented per module
Wavelength1310 / 1550 nm
Typical Insertion Loss0.25 dB
Loss GradeStandard
Mechanical & Environment
FormatLGX-compatible cassette, 1×LGX footprint
Rear GenderFemale (unpinned) MPO adapter
Front GenderFemale (unpinned) MPO adapters
HousingCold-rolled steel, black powder coat
LabellingPosition map printed on the module face
Operating Temp-10 °C to +60 °C
ComplianceIEC 61754-7, TIA-604-5, RoHS
Jacket ColourYellow
Testing, Quality & Supply
Optical Test100% — every fibre measured for insertion loss and return loss before shipment
Ferrule GeometryInterferometer-verified: radius of curvature, apex offset and fibre height to IEC 61755-3
End-Face InspectionEvery ferrule inspected and graded to IEC 61300-3-35
Test ReportPer-fibre measured data supplied with the assembly, traceable to the serial number
Connector SourceUS Conec MTP® ferrules; genuine-brand or FOT MPO to your preference
CustomisationFibre count, type, polish, polarity, gender, jacket, leg length and overall length built to order
Lead TimeStock configurations 3–5 days; custom builds 7–10 days
Warranty3 years

Ordering Information

Part NumberConfigurationFibre countAvailability
FOT-MPO-CONVCASStandard configuration24FBuild to order
FOT-MPO-CONVCAS-24T212Conversion: 24F → 2 × 12F24FBuild to order
FOT-MPO-CONVCAS-212T38Conversion: 2 × 12F → 3 × 8F24FBuild to order
FOT-MPO-CONVCAS-16T28Conversion: 16F → 2 × 8F16FBuild to order
FOT-MPO-CONVCAS-32T48Conversion: 32F → 4 × 8F32FBuild to order
FOT-MPO-CONVCAS-657A1Fibre type: G.657.A1 bend-insensitive24FBuild to order
FOT-MPO-CONVCAS-657A2Fibre type: G.657.A2 bend-insensitive24FBuild to order
FOT-MPO-CONVCAS-OM3Fibre type: OM3 multimode24FBuild to order
FOT-MPO-CONVCAS-OM4Fibre type: OM4 multimode24FBuild to order

Part numbers are indicative. Send us the fibre count, type, polish, polarity, gender, jacket and length and we confirm the exact build code on the quotation.

Quality & What's in the Box

Measured Fibre by Fibre

Insertion loss and return loss recorded for every fibre, not sampled.

Geometry Verified

Interferometer data on ferrule radius, apex offset and fibre height.

Inspected & Graded

Every end face checked against IEC 61300-3-35 before packing.

Packaging

Dust-capped, coiled on a reel or in a bag with the test report and pulling sock.

Typical Applications

Data Centre Spine & Leaf

Parallel 40G/100G/400G/800G backbone between spine, leaf and top-of-rack panels.

AI / GPU Clusters

Rail-optimised accelerator fabrics where one switch port breaks out to several GPUs.

Structured Cabling

Pre-terminated backbone that installs in hours instead of days, with the loss budget known up front.

Test & Commissioning

Loopbacks, attenuators and inspection for proving ports before the link goes live.

Frequently Asked Questions

Why would I need a conversion module?

Because base-12 trunk plant and base-8 optics do not divide evenly. A 12-fibre trunk feeding 8-fibre transceivers strands four fibres per connector — a third of what you installed. A conversion module re-groups three 8-fibre connections out of two 12-fibre trunks and you use everything.

Does it add loss compared to a straight trunk?

One extra mated MPO pair, so about 0.35 dB worst case per module. Weigh that against stranding a third of the fibre in an installed trunk — on almost any existing plant, the module wins.

How is the assembly labelled?

Both ends carry a printed label with the part number, fibre count, fibre type, polarity type and the serial number, and breakout legs are individually numbered. Tell us your own labelling convention on the RFQ and we print to it — it costs nothing and it saves an afternoon at installation.

Can I get free samples before ordering volume?

Yes. We supply qualification samples so you can measure the loss and check the fit in your own panels before committing. Per-order test reports are standard, and sample reports can be provided in advance for tender documentation.

Related MPO / MTP Products

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MPO/MTP Trunk Cable
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MPO/MTP Bundle / Multi-Leg Trunk Cable
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MPO/MTP Bundle / Multi-Leg Trunk Cable

Request a quote for this part

Tell us the platform and the quantity. An engineer checks the part against your switch and software version before quoting — if it will not work, we say so.

Goes to our engineers and the quotation desk together. Replies come from sales@topnetsystem.com, usually within one working day.