Directly Buried Optical Cable (GYTA53)
The GYTA53 optical cable features a structure where single-mode or multi-mode optical fibers are housed within loose tubes made from high-modulus polyester material, with the tubes filled internally with a water-resistant compound. At the center of the cable core is a metallic strength member; for certain cable configurations, an additional layer of polyethylene (PE) is extruded over the metal strength member. The loose tubes (along with filling strands) are twisted around the central strength member to form a compact, circular cable core, and the gaps within the core are completely filled with a water-blocking filler. Finally, the cable is completed by longitudinally wrapping a plastic-coated aluminum tape, followed by extruding a polyethylene inner sheath. A double-sided chrome-plated plastic-coated steel tape (PSP) is then longitudinally wrapped around the assembly, after which a polyethylene outer jacket is extruded to finalize the cable construction.