Designation of FinMark optical cable consists of several groups of letters and numbers, which mean the following:
| Cable type | Number of fibers | – | Fiber type | – | Modification | (Additional symbols) |
The first two letters indicate the cable type:
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UT
(UniTube) |
Cable with a core consisting of a single central tube and side strength members |
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LT | Cable with a modular core design and a central strength member |
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MT | Cable in the form of a hollow tube with loosely arranged tight-buffered fibers and side strength members |
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MU | Cable in the form of a hollow tube with loosely arranged fiber micromodules and side strength members |
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MB | Cable containing micro-cables in individual jackets stranded around a central strength member |
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PS | Single- or dual-fiber cable with tight-buffered fibers for manufacturing patch cords and jumpers |
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FTTH | Low-fiber-count flat cable with side strength members for access network deployment inside buildings |
Three digits — number of fibers in the cable
From 002 to 288 for cables with individual fibers.
For example:
- 004 – 4 fibers in the cable;
- 196 – 196 fibers in the cable.
Fiber type:
- SM – standard single-mode fiber compliant with ITU-T G.652.D recommendation
- MM – 50/125 μm multimode fiber compliant with ITU-T G.651 recommendation
- SS – non-zero dispersion-shifted single-mode fiber compliant with ITU-T G.655 recommendation
Two digits — design features:
UTxxx Optical Cable
UTxxx |
02 – Tube – Corrugated Steel Tape – PE | |
| 03 – Tube – Corrugated Steel Tape – 2×1.2 mm Steel Wires – PE | ||
| 04 – Tube – Corrugated Steel Tape – 2×1.0 mm Steel Wires – PE | ||
| 05 – Tube – Corrugated Steel Tape – Corrugated Aluminum Tape – PE | ||
| 06 – Tube – Corrugated Steel Tape – PE | ||
| 08 – Tube – Corrugated Steel Tape – PE – Steel Messenger Strand | ||
| 11 – Tube – Fiberglass – LSZH | ||
| 12 – Tube – Aramid Yarns – LSZH | ||
| 15 – Tube – Fiberglass – 2× Aramid Rods – PE | ||
| 16 – Tube – 2× FRP Rods – PE | ||
| 16L – G.657.A1 Fiber – Tube – 2× FRP Rods – PE | ||
| 18 – Tube – PE – Steel Messenger Wire | ||
| 21 – Tube – 2× FRP Rods – PE (Flat) | ||
| 28 – Tube – Aramid Yarns – PE – Steel Messenger Wire | ||
| 48 – Tube – PE – Steel Messenger Strand | ||
| 88 – Tube – PE – FRP Messenger Rod | ||
LTxxx Optical Cable
LTxxx |
02 – Steel Wire – Tubes – Corrugated Steel Tape – PE | |
| 03 – Steel Wire – Tubes – PE – Corrugated Steel Tape – PE | ||
| 04 – Steel Wire – Tubes – Corrugated Steel Tape – PE | ||
| 05 – Steel Wire – Tubes – Corrugated Steel Tape – PE | ||
| 07 – Steel Wire – Tubes – Aluminum Tape – PE – Corrugated Steel Tape – PE | ||
| 08 – Steel Wire – Tubes – Corrugated Steel Tape – PE – Steel Messenger Strand | ||
| 18 – Steel Wire – Tubes – Water Blocking Tape – PE – Steel Messenger Strand | ||
| 25 – FRP Rod – Tubes – Aramid Yarns – PE (LSZH) | ||
| 28 – Steel Wire – Tubes – Water Blocking Tape – PE – Steel Messenger Strand | ||
| 88 – FRP Rod – Tubes – PE – FRP Messenger Rod | ||
| ADSS – FRP Rod – Tubes – (PE) – Aramid Yarns – PE | ||
Abbreviations:
- Corrugated Steel Tape – corrugated steel tape
- Steel Wire Armor – steel wire armor
- Steel Wire – steel wire(s)
- Steel Messenger Strand – steel strand
- Steel Spiral – steel spiral armor
- Aluminum Tape – aluminum tape
- Water Blocking Tape – water-blocking tape
- PE – polyethylene jacket
- LSZH – low-smoke zero-halogen jacket
- TB – tight-buffered fibers (Ø0.9 mm)
Additional symbols (optional):
- Flex – Single-mode bend-insensitive fiber compliant with ITU-T G.657.A1.
- Flex2 – Single-mode bend-insensitive fiber compliant with ITU-T G.657.A2.
- Flex3 – Single-mode bend-insensitive fiber compliant with ITU-T G.657.B3.
- L – compact cable with G.657.A1 fibers.
- CW – insulated copper conductors for powering remote devices.
- ADSS – All-Dielectric Self-Supporting cable.
- T – water-blocking tape.
- LSZH – low-smoke, halogen-free flame-retardant jacket.
- PVC – PVC jacket.
- White – white-colored jacket.
- xx kN – permissible tensile load in kN.
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