CENTRAL LOOSE TUBE (CLT) OPTICAL FIBER CABLE
This cable has been designed for LANs and other low fiber count applications. It is based on Central Loose Tube CATV construction. The design caters the protection of the fibers through Thixotropic Jelly filled in the tube, the moisture barrier is the water Swellable tape, and the strength members are Phosphorus Coated Steel Wires with Outer Jacket of High Density Polyethylene. The fibers used are ITU-T G.652.D compliant.
Features & Application
- Excellent optical, mechanical & environmental performance
- Small diameters compare to other constructions
- Corrugated Steel Tape as protection against rodents and mechanical damages
- Two phosphorus coated steel wire provide necessary tensile strength
- Corrosion resistance
- KINK resistance
- Very light weight
- Very flexible & small bending radius
- Application in LANs and other low fiber count applications Junction communication systems
Construction Parameters
| No. of Loose Tube | 01 |
| No. of Fiber | 01 to 12 |
| Loose Tube Material | Polybutylene Terephthalate (PBT) |
| Loose Tube Filling Material | Thixotropic Jelly |
| Strength Member | Phosphorus Coated Steel Wire |
| Outer Sheath Material | High Density Polyethylene (HDPE) |
| Printing on Outer Sheath | Engraved Hot Foil or Inkjet Printing |
| Nominal Cable Delivery Length (km) | 4 KM ± 3% |
| Normal Cable Diameter | 9.0 ± 0.3mm |
Mechanical Characteristics
| Minimum Bending Radius | Static : 10 x cable diameter
Dynamic : 20 x cable diameter |
| Tensile Strength | Installation: 1,500 N,
Operating: 600 N |
| Crush Resistance | Long Term:1,000 N,
Short Term: 300 N |
Optical Characteristics
| Fiber Color Coding | As per TIA/EIA-598A |
| Fiber Type | Single Mode G.652.D |
| Mode Field Diameter, µm | 8.6 to 9.5 ± 0.6 |
| Cladding Diameter, µm | 125 ± 1 |
| Core Clad concentricity error (µm) | ≤ 0.6 |
| Clad Non-circulatory % | ≤ 1 % |
| Chromatic Dispersion, ps/ (nm.km) | ≤ 3.5 at 1285 – 1330nm |
| Polarized Mode Dispersion ps/√km | ≤ 18 at 1550nm |
| Cut-off Wavelength, nm | ≤ 1260 |
