The fibers, 250μm, 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 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 outer sheath.

GYTA33 is an underwater use fiber optic cable, it is steel wires armored to be suitable for installation in a harsh environment, GYTA33 can also be direct buried underground, and this cable is available from 2cores to 144cores. GYTA33 is with loose tube technology which makes the fibers good secondary excess length and allows the fibers free movement in the tube. These features keep the fiber stress free while the cable is subjected to longitudinal stress. Optimum mechanical protection such as high tensile, crush and impact resistant performances are achieved by the steel wire armor and the double jacket structure.

GYTA33 is an outdoor communication fiber optic cable of metallic strength member of the loose tube jelly-filled structure, with Al-polyethylene laminated sheath and single-layer thin round steel wire armored polyethylene outer sheath.

1. Full cross-section water-blocking structure to ensure good water blocking and moisture resistance.

2. Loose tube is filled with special ointment for a key protection of fiber.

3. The phosphate wire center stiffening member is of high modulus and corrosion resistance.

4. Double-sided vertically-clad laminated corrugated aluminum tape with thin round steel wire armor ensures the mechanical resistance to compression, tensile, and ballistic performance, and meets the application requirements of climbing direct burial and underwater laying.

5. Product life is 30 years.