The typical weight of a G.652 single-mode optical fiber cable ranges from 30 to 50 kg per kilometer, depending on the cable construction and protective layers.

Fiber and Cable Structure

G.652 fiber is a single-mode optical fiber standardized by ITU-T, optimized for operation around the 1310 nm wavelength and also suitable for 1550 nm transmission . The fiber itself has a core diameter of 8–10 µm and a cladding diameter of 125 µm . The fiber is coated with a primary polymer layer (usually 250 µm diameter) and may be further enclosed in secondary coatings, strength members, and outer jackets, which significantly contribute to the cable's overall weight.

Typical Weight Ranges

• Bare fiber: The glass fiber alone weighs approximately 0.05–0.06 kg/km, which is negligible compared to the full cable .
• Tight-buffered or loose-tube cables: With protective coatings, strength members, and outer jackets, the weight typically ranges from 30 to 50 kg/km for standard single-fiber or multi-fiber cables.
• Armored or outdoor cables: Heavier constructions with steel or aluminum armoring can weigh up to 100 kg/km or more, depending on the number of fibers and environmental protection requirements.

Factors Affecting Weight

1. Number of fibers: Multi-fiber cables increase weight proportionally.
2. Cable type: Indoor, outdoor, aerial, or submarine designs have different protective layers.
3. Strength members: Materials like aramid yarn, fiberglass rods, or steel wires add weight.
4. Outer jacket material: PVC, LSZH, or polyethylene jackets vary in density and thickness.

Summary

While the bare G.652 fiber is extremely light, the installed cable weight is the practical figure for planning and handling. For most standard single-mode G.652.D cables used in indoor or outdoor installations, expect 30–50 kg per kilometer, with heavier armored variants exceeding 100 kg/km . This range allows engineers to calculate load, tension, and support requirements for deployment.