Product Description
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| This Direct Buried Optical Fiber Cable has been designed for long haul / backbone application. Our stranded loose tube design provides stable performance over a wide temperature range and is compatible with any telecommunications-grade optical fiber. Direct Buried type Fiber Optical Cable are designed for easy and economical installation.
The stranded loose tubes contain thixotropic jelly but the cable core is based on dry-block construction. Incorporation of Dry Water Block Technology eliminates the need for traditional jelly filled water blocking methods, thus providing efficient and craft-friendly cable installation.
The thixotropic jelly is used to fill the buffer tubes to prevent water ingress. Steel Tape Armoring provides a rodent protection, length markings in meters for easy determination of cable length. Extra Strength cable can also be delivered with Peripheral Strength Members. |
Features & Application
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- Excellent optical, mechanical & environmental performance
- High strength-to-weight ratio
- CSM dielectric type – Fiber Reinforced Plastic
- Dry block construction
- High tensile strength
- High crush strength
- Corrosion resistance
- KINK resistance
- Very light weight
- Very flexible & small bending radius
- Long haul / backbone application
- Junction communication systems
- All dielectric applications
- CATV applications
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Cable Construction Detail
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Construction Parameters
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| Fiber Count |
02 – 288 Fibers |
| No. of Loose Tube |
04 |
| No. of Filler |
02 |
| No. of Fiber in each Tube |
06 |
| Loose Tube Material |
Polybutylene Terephthalate (PBT) |
| Loose Tube Filling Material |
Thixotropic Jelly |
| Filler Material |
Medium Density/High Density Polyethylene (MDPE/HDPE) |
| Central Strength Member |
Fiber/Glass Reinforced Plastic (FRP/GRP) |
| Armoring |
Corrugated Steel Tape Armoring |
| Peripheral Strength Member (if required) |
Aramid / Glass Yarn |
| Core Moisture Protection Methodology |
Dry Block Design, Water Blocking Yarns/Tapes |
| 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% |
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Mechanical Characteristics
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| Tensile Strength (N) |
3,000 |
| Crush Strength (N) |
2,500 |
| Minimum Bending Radius (mm) |
10 x outer diameter of Cable without load
20 x outer diameter of Cable with load |
| Temperature Operating Range |
-20 to +70°C |
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Optical Characteristics
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| Fiber Color Coding |
As per TIA/EIA-598A |
| Fiber Type |
Single Mode G.652.D |
| Mode Field Diameter, µm |
8.6 to 9.5 ± 0.7 |
| Cladding Diameter, µm |
125 ± 1 |
| Core Clad concentricity error (µm) |
≤ 1.0 |
| Clad Non-circulatory % |
≤ 2 % |
| Chromatic Dispersion, ps/ (nm.km) |
≤ 3.5 at 1310
≤ 18 at 1550 |
| Polarized Mode Dispersion ps/√km |
≤ 0.50 |
| Cut-off Wavelength, nm |
≤ 1260 |
| Cabled Attenuation @ 1310 nm (dB/km) |
≤ 0.35 (average) |
| Cabled Attenuation @ 1550 nm (dB/km) |
≤ 0.21 (average) |
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