The fibers,250um,are positioned in a loose tube made of a 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 fiber 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 is completed with a PE sheath.

GYTA Details

Good mechanical and temperature performance
High strength looes tube that is hydrolysis resistant
Special tube filling compound ensure a critical protection of fiber
Specially designed compact structure is good at preventing loose tubes from shrinking
PE sheath protects cable from ultraviolet radiation
The following measures are taken to ensure the cable watertight:
-Steel wire used as the central strength member
-Loose tube filling compound
-100% cable core filling
-APL moisture barrier


Optical characteristics:

  G.652 G.655 50/125µm 62.5/125µm
@850nm     ≤3.0dB/km ≤3.0dB/km
@1300nm     ≤1.0dB/km ≤1.0dB/km
@1310nm ≤0.36dB/km ≤0.40dB/km    
@1550nm ≤0.22dB/km ≤0.23dB/km    
(Class A)
@850nm     ≥500MHZ·km ≥200MHZ·km
@1300nm     ≥1000MHZ·km ≥600MHZ·km
Numerical Aperture     0.200±0.015NA 0.275±0.015NA
Cable Cut-off Wavelength λ cc ≤1260nm ≤1480nm    


Technical parameters:

Cable Type GYTA-2~6 GYTA-8~12 GYTA-14~18 GYTA-20~24 GYTA-26~30
Fiber Count 2-6 8-12 14-18 20-24 26-30
Tubes 1 2 3 4 5
Fillers 4 3 2 1 0
Cable Diameter (mm) 9.7 9.7 9.7 9.7 9.7
Cable Weight (kg/km) 90 90 90 90 90
Tensile Strength Long/Short Term (N) 600/1500 600/1500 600/1500 600/1500 600/1500
Crush Resistance Long/Short Term (N/100mm) 300/1000 300/1000 300/1000 300/1000 300/1000
Bending Radius Static/Dynamic (mm) 10D/20D 10D/20D 10D/20D 10D/20D 10D/20D

Storage/Operating Temperature : -40°C to + 70°C


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