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One jacket, many MPO legs — 8F×2 up to 24F×24.
A bundle trunk carries several independent MPO legs inside one outer jacket: pull once, land many. It is how a row of switches gets fed from a single core run, and it removes the cable-management problem of dressing twenty-four separate trunks into the same panel.
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.
| Leg Configuration | 12F × 8 legs |
|---|---|
| Fiber Count | 96F total |
| Fiber Type | OS2 single-mode, G.652.D — Corning SMF-28 Ultra |
| Wavelength | 1310 / 1550 nm |
| Insertion Loss | ≤ 0.35 dB |
| Return Loss | ≥ 60 dB |
| Connector Polish | APC — 8° angled, green housing |
| Polarity | Type B (reversed) |
| Typical Insertion Loss | 0.25 dB |
| Loss Grade | Standard |
| Connector | US Conec MTP® / MPO |
|---|---|
| Gender | Female to female — no guide pins |
| Breakout Leg Length | 1.0 m |
| Cable Jacket | LSZH round, 3.0 mm |
| Jacket Colour | Yellow |
| Flame Rating | IEC 60332-1 LSZH |
| Length | 5 m (custom lengths to 500 m) |
| Min. Bend Radius | 10 × cable OD dynamic, 5 × static |
| Crush Resistance | ≥ 1000 N / 100 mm |
| Tensile Strength | Short term 100 N / long term 30 N |
| Operating Temp | -10 °C to +60 °C |
| Storage Temp | -40 °C to +75 °C |
| Compliance | IEC 61754-7, TIA-604-5 (FOCIS-5/10), RoHS |
| Optical Test | 100% — every fibre measured for insertion loss and return loss before shipment |
|---|---|
| Ferrule Geometry | Interferometer-verified: radius of curvature, apex offset and fibre height to IEC 61755-3 |
| End-Face Inspection | Every ferrule inspected and graded to IEC 61300-3-35 |
| Test Report | Per-fibre measured data supplied with the assembly, traceable to the serial number |
| Connector Source | US Conec MTP® ferrules; genuine-brand or FOT MPO to your preference |
| Customisation | Fibre count, type, polish, polarity, gender, jacket, leg length and overall length built to order |
| Lead Time | Stock configurations 3–5 days; custom builds 7–10 days |
| Warranty | 3 years |
| Part Number | Configuration | Fibre count | Availability |
|---|---|---|---|
| FOT-MPO-BUNDLE | Standard configuration | 96F total | Build to order |
| FOT-MPO-BUNDLE-8X2 | Leg configuration: 8F × 2 legs | 16F total | Build to order |
| FOT-MPO-BUNDLE-8X24 | Leg configuration: 8F × 24 legs | 192F total | Build to order |
| FOT-MPO-BUNDLE-12X4 | Leg configuration: 12F × 4 legs | 48F total | Build to order |
| FOT-MPO-BUNDLE-16X8 | Leg configuration: 16F × 8 legs | 128F total | Build to order |
| FOT-MPO-BUNDLE-24X2 | Leg configuration: 24F × 2 legs | 48F total | Build to order |
| FOT-MPO-BUNDLE-24X24 | Leg configuration: 24F × 24 legs | 576F total | Build to order |
| FOT-MPO-BUNDLE-32X6 | Leg configuration: 32F × 6 legs | 192F total | Build to order |
| FOT-MPO-BUNDLE-657A1 | Fibre type: G.657.A1 bend-insensitive | 96F total | Build 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.
Insertion loss and return loss recorded for every fibre, not sampled.
Interferometer data on ferrule radius, apex offset and fibre height.
Every end face checked against IEC 61300-3-35 before packing.
Dust-capped, coiled on a reel or in a bag with the test report and pulling sock.
Parallel 40G/100G/400G/800G backbone between spine, leaf and top-of-rack panels.
Rail-optimised accelerator fabrics where one switch port breaks out to several GPUs.
Pre-terminated backbone that installs in hours instead of days, with the loss budget known up front.
Loopbacks, attenuators and inspection for proving ports before the link goes live.
A bundle wins when the legs all follow the same route and land in the same rack: one pull, one label, one cable in the tray. Separate trunks win when the legs diverge, or when you want to be able to replace one leg without disturbing the rest. Above about eight legs, a bundle is usually the only practical choice.
Long enough to reach the far corner of the panel with the cable dressed properly, and no longer — surplus leg has to be coiled somewhere. One metre suits most 1U/4U panels; measure the worst-case port before you commit, because the legs are furcated at the factory and cannot be lengthened on site.
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.
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.
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.