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Direct Buried Fiber Optic Cable

  • GYTA53
  • GYTA53
  • GYTA53

GYTA53

  • Product Model: GYTA53

Description:

The fibers, either of single-mode or multimode type, are positioned in a loose tube made of high modulus plastic. The tubes are filled with a water-resistant filling compound. A steel wire sometimes sheathed with polyethylene(PE) for cable with high fibre count, locates in the center of core as a metallic strength member. Tubes (and fillers) are stranded around the strength member into a compact and circular cable core. An Aluminum Polyethylene Laminate (APL) is applied around the cable core, which is filled with the filling compound to protect it from water-ingress. Then, the cable core is covered with a thin PE inner sheath. After the PSP is longitudinally applied over the inner sheath, the cable is completed with a PE sheath.

Application:

☆.Adopted to outdoor distribution.
☆.Suitable for aerial duct and buried method.   
☆.Long distance and local area network communication.

Characteristics:

☆.Accurate fiber excess length ensures good mechanical and temperature performance.
☆.High strength loose tube that is hydrolysis resistant and special tube filling compound ensure a critical protection of fibre.
☆.Specially designed compact structure is good at preventiing loose tubes from shrinking.

☆. The following measures are taken to ensure the cable watertight:

1)Steel wire used as the central strength member

2) Loose tube filling compound

3) 100% cable core filling

4)APL moisture barrier

5) PSP enhancing moisture-proof

6) Water-blocking material

.Fiber count: 4-144 cores.

 

Fiber Allocation Scheme

Fiber number  Tube number  Fiber per tube  Fiber type
4 1 4 F/Tube SM G652D MM 50/125   MM 62.5/125
6 1 6F/Tube
8 1 8F/Tube
10 1 10F/Tube
12-60 1-5 12F/Tube

Cable Construction Details

         Items  Description
Number of fiber 4-60cores
Filling rope  4-0
Moisture Barrier Water blocking system
Central strength member Material  FRP
size 1.4mm
Inner sheath material PE
diameter 2.0mm
Loose tube material PBT
diameter Ф2.2(outer/inner)
Tube-filling material Tube filling compound
Inner armored Material  Corrugated steel tape 
Outer armored Material  Aluminium tape
Outer sheath material PE
diameter 1.70±0.2mm

Cable Mechanical Characteristic

Items Cable  diameter Weight
2cores to 60cores 12.5±0.5mm 135±10kg/km
Installation Temperature range   -15--+60
Operation and transport temperature  -40-+70
Min Bending Radius(mm) Long term 10D
short term 20D
Min allowable Tensile Strength(N) Long term 500
short term 1200

Fiber Characteristic 

Fiber style Unit SM G652D MM 50/125 MM 62.5/125
condition nm 1310/1550 850/1300 850/1300
attenuation dB/km ≤0.36/0.23 ≤3.0/1.0 ≤3.0/1.0
Dispersion 1310nm Ps/(nm*km) ≥-3.4 ≤3.4 ..... .....
1550nm Ps/(nm*km) ≤18 ..... .....
1625nm Ps/(nm*km) ≤22    
Bandwidth 850nm MHZ. KM ..... ≧400 ≧160
1300nm MHZ. KM ..... ≧800 ≧500
Zero dispersion wavelength nm ≧1302,≤1322 ..... .....
Zero dispersion slope Ps(nm2*km) ≤0.091 ..... .....
PMD Maximum Individual Fiber Ps√km ≤0.2 ..... .....
PMD Design Link Value Ps√km ≤0.08 ..... .....
Fibre cutoff wavelength λc nm ≧1180,≤1330 ..... .....
Cable cutoff wavelength λcc nm ≤1260 ..... .....
MFD 1310nm um 9.2±0.4 ..... .....
1550nm um 10.4±0.8 ..... .....
Numerical Aperture(NA)   ...... 0.200±0.015 0.275±0.015
Step(mean of bidirectional measurement) dB ≤0.05 ≤0.10 ≤0.10
Irregularities over fiber length and point discontinuity dB ≤0.05 ≤0.10 ≤0.10
Difference backscatter coefficient dB/km ≤0.03 ≤0.08 ≤0.10
Attenuation uniformity dB/km ≤0.01 ....... .......
Core diameter um ...... 50±1.0 62.5±2.5
Cladding diameter um 125.0±0.1 125.0±0.1 125.0±0.1
Cladding non-circularity % ≤1.0 ≤1.0 ≤1.0
Coating diameter um 242±7 242±7 242±7
Coating/chaffinch concentrically error um ≤12.0 ≤12.0 ≤12.0
Coating non circularity % ≤6.0 ≤6.0 ≤6.0
Core/cladding concentricity error um ≤0.6 ≤1.5 ≤1.5
Curl(radius) um ≤4 ..... .....

Packing Informations:

Packing material: Wooden drum

Packing length: standard length of cable shall be 2000m. Other cable length is also available if required by customer Drum

size: 110*110*55cm

Packing weight:  295kg/drum

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