Optical Communication Products · Shenzhen, China
Tel: +86 0755 23766314  ·  marketing@fotfiberoptic.com
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MPO/MTP Trunk Cable

SKU: FOT-MPO-TRUNK · Trunk & Jumper Cables

8F to 144F backbone trunk, panel to panel, factory tested.

12FFibre count
≤ 0.35 dBInsertion loss
Type BStandard polarity
100%Tested & reported
Fibre count
12F8F16F24F32F48F72F144F
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)
Polarity
Type B (reversed)Type A (straight)Type C (pair-flipped)
Gender
Female – Female (no pins)Male – FemaleMale – Male (pinned)
Jacket
LSZH 3.0 mmOFNR riserOFNP plenumArmored (steel spiral)
Length
5 m1 m3 m10 m20 m30 m50 m100 m
Configured part numberFOT-MPO-TRUNK
Ships worldwide
Built to your configuration
3-year warranty

Product Overview

The backbone of a parallel-optics data centre: a single jacketed cable carrying 8 to 144 fibres with a factory-terminated MPO at each end. It replaces dozens of duplex jumpers with one pull, and because every ferrule is polished and interferometer-checked in the factory rather than on a ladder, the loss budget you design with is the loss budget you get.

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
Fiber Count12F
Fiber TypeOS2 single-mode, G.652.D — Corning SMF-28 Ultra
Wavelength1310 / 1550 nm
Insertion Loss≤ 0.35 dB
Return Loss≥ 60 dB
Connector PolishAPC — 8° angled, green housing
PolarityType B (reversed) — the usual choice for port-to-port parallel links
Attenuation≤ 0.4 dB/km @1310 nm, ≤ 0.3 dB/km @1550 nm
Typical Insertion Loss0.25 dB
Loss GradeStandard
Mechanical & Environment
ConnectorUS Conec MTP® / MPO, 12-fibre ferrule
GenderFemale to female — no guide pins
Cable JacketLSZH round, 3.0 mm
Jacket ColourYellow
Flame RatingIEC 60332-1 LSZH
Length5 m (custom lengths to 500 m)
Min. Bend Radius10 × cable OD dynamic, 5 × static
Crush Resistance≥ 1000 N / 100 mm
Tensile StrengthShort term 100 N / long term 30 N
Operating Temp-10 °C to +60 °C
Storage Temp-40 °C to +75 °C
ComplianceIEC 61754-7, TIA-604-5 (FOCIS-5/10), RoHS
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-TRUNKStandard configuration12FBuild to order
FOT-MPO-TRUNK-8FFibre count: 8F8FBuild to order
FOT-MPO-TRUNK-16FFibre count: 16F16FBuild to order
FOT-MPO-TRUNK-24FFibre count: 24F24FBuild to order
FOT-MPO-TRUNK-32FFibre count: 32F32FBuild to order
FOT-MPO-TRUNK-48FFibre count: 48F48FBuild to order
FOT-MPO-TRUNK-72FFibre count: 72F72FBuild to order
FOT-MPO-TRUNK-144FFibre count: 144F144FBuild to order
FOT-MPO-TRUNK-657A1Fibre type: G.657.A1 bend-insensitive12FBuild 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

Which polarity should I order?

For a straight port-to-port parallel link — say 400G-SR8 to 400G-SR8 through two patch panels — Type B is the normal answer, and it is what we ship unless you say otherwise. Type A is used when the crossover is handled elsewhere in the channel, and Type C is a legacy scheme for carrying duplex pairs over MPO. Our polarity guide works through all three end to end.

APC or UPC — how do I choose?

Single-mode parallel optics are almost always APC (green). The 8° angle throws back-reflection into the cladding instead of down the fibre, which matters when eight or sixteen lanes share one connector. Multimode is normally UPC/PC. APC and UPC must never be mated to each other — you will damage both.

Do you supply the test data?

Yes. Every fibre of every trunk is measured for insertion loss and return loss, and interferometer data for ferrule geometry (radius, apex offset, fibre height) is on file. The measured report ships with the cable and is quoted against the serial number.

Can you make non-standard lengths?

Yes — lengths are cut to order up to 500 m, and we can supply a pulling eye and a protective sleeve for long conduit runs. Tell us the route length plus slack for the panels; a trunk that is 2 m short is scrap.

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

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.