SLIDE 7 Unrepeatered Cable Design
Now….
❑ 192 fiber count cable standard ❑ Numerous different fiber types. From standard G.652.D terrestrial fiber to G.654.D large effective area and ultra low loss attenuation. ❑ Bundled steel tube or Unitube design ❑ Steel wire armoring and a stainless-steel tube (some suppliers use Copper) ❑ Protection from water ingress (thixotropic water blocking compound) ❑ An outer layer of polypropylene yarn is wrapped around the armoring to facilitate the handling of the cable during marine installation ❑ Cables and joints are designed for depths down to 3000m ❑ Universal quick joints & proprietary joints ❑ ROPA designs…
The future…?
❑ Increase the fibre count / density using 200µm
fiber (reduced diameter) ❑ Continuous development & enhancements of new fiber types, leading to lower attenuation and larger effective area -> longer reach ✓ Currently G.652.D/G.657.A1 is commercial available
with 200 µm design but fiber manufacturers are developing 200 µm fiber in G.654 quality
❑ Improvements of fiber coating will increase fiber robustness ❑ Improvements to environmental impact ❑ New or fewer materials
