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OKG Direct Buried, Loose Tube, Double Jacket, Wire Armor

OKG Direct Buried, Loose Tube, Double Jacket, Wire Armor

  1. Outer PE sheath*
  2. Steel wire armor
  3. Hydrophobic gel
  4. Intermediate PE sheath
  5. Hydrophobic gel
  6. Loose tube
  7. Optical fiber
  8. Central strength element (fiberglass rod)


Optical cable is designed for direct buried installation in conditions with high mechanical stability requirements: in all groups of soils, in swamps, shallow non-navigate rivers.

Technical Characteristics

Parameter Value
Tensile strength, kN 7
Number of optical fibers 4 8 12 16-32 48
Cable diameter, mm 11,6 12,4 11,6 12,4 13,5
Cable weight, kg/km 204 240,9 204,5 228,7 269,6
Number of optical fibers 64 72 96 144
Cable diameter, mm 14,8  14,0  14,4  16,2 
Cable weight, kg/km 323,9  284,2  309,2  408,6 
Crushing force, kN/sm 0,4
Operating temperature -50°С…+70°С
Installation temperature -30°С…+50°С
Transportation and storage temperature -50°С…+70°С
Minimum bending radius Not less than 15 cable diameters
Factory length, km 4

Technical characteristics of optical fiber

Type of optical fiber Corning SMF 28 Ultra Corning SMF28e+BB
ITU-T recommendations G.657A1 G.652D G.657A1 G.652D
Deviation from the concentricity of the core, microns, not more  0,5
Diameter of fiber sheath, microns 125±0,7
Deviation from the roundness of the sheath, %, not more 0,7
The diameter of the protective covering, microns 242±5
Maximum attenuation at wavelength 1310 nm 0,32 0,34
Maximum attenuation at wavelength 1550 nm 0,18 0,20

Full name example

Optical cable ОКG-48G.652D7kN

The cable consists of a loose tube core with a dielectric central strength around which optical loose tubes with freely laid fibers of the G.652D Standard are twisted. the maximum tensile strength is 7kN.

Download the OKG cable specification in PDF

Download the OKG cable certificates and declarations in PDF