Metal Free Fiber Optical Cable DUCT OR Direct Buried

Product Description

This cable design of Non-Metallic Construction is used, wherever required, from traceability point of view.The design is based on stranded loose tube which provides stable performance over a wide temperature range and is compatible with any telecommunications-grade optical fiber.

This Cable has been designed for both Duct and Direct Buried applications. Design strength and rodent protection has been provided by using Polyamide – Nylon and Rodent Resistant Glass Rovings as first (inner) sheath.

The stranded loose tubes contain thixotropic jelly for protection of the optical fibers as required. It is designed on Jelly base, contains the excellent quality filling compound for stopping ingress/transport of water into the cable.

The product is available up to 216 Fibers in both G.652.D and composite construction, it facilitates easy and economical installation.

Features & Application

  • 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

Cable Construction Detail

Construction Parameters

Fiber Count
02 to 288 Fibers
Color of Fiber
As per TIA/EIA-598A
Loose Tube Material
Polybutylene Terephthalate (PBT)
Loose Tube Filling Material
Thixotropic Jelly
Filler Material (if required)
Medium Density/High Density Polyethylene (MDPE/HDPE)
Central Strength Member
Fiber Reinforced Plastic (FRP) – Non Metallic
Core Moisture Protection Methodology
Jelly Filled Construction / Dry Block Construction
Peripheral Strength Member
Glass Yarn
First (Inner) Sheath Material
Rodent Protection
Rodent Resistant Glass Rovings
Second (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%

Mechanical Characteristics

Tensile Strength (N)
Crush Strength (N)
Minimum Bending Radius (mm)
20 x Cable diameter (Full Load)
10 x Cable diameter (No Load)
Temperature Operating Range
-10 to +70°C

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 ± 0.7
Cladding Diameter, µm
125 ± 1
Core Clad concentricity error (µm)
? 1.0
Clad Non-circulatory %
? 2 %
Chromatic Dispersion, ps/ (
? 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)