The structure of the optical cable is to insert single-mode or multi-mode optical fibers into a loose tube filled with waterproof compound made of high modulus plastic. At the center of the cable core is a metal reinforcing component. It includes metal reinforcing components, loose-fitting layer stranded filling type, aluminum-polyethylene bonded inner sheath, fine round steel wire armor, and polyethylene outer sheath for communication. For some core numbers of optical cables, a polyethylene padding layer is extruded around the metal central reinforcing element. Loose tubes (and filling ropes) are twisted around the central reinforcing element to form a compact and round cable core. The gaps inside the cable core are filled with water-blocking compound, and an aluminum-polyethylene bonded inner sheath is extruded. After being armored with fine round steel wire, the gaps are filled with water-blocking compound, and then the polyethylene outer sheath is extruded to form the cable.

direct burial, underwater laying, climbing laying, marshland, etc.

suitable for long-distance communication and inter-office communication, etc. It is generally laid underwater in shallow water areas of less than 100 meters.

YD/T 901-2018 outdoor optical cable for stranded communication.

• Reasonable design and precise control of the excess length of the optical fiber in the loose tube and the cabling method endow the optical cable with excellent mechanical and environmental performance;
• The outside of the reinforcing parts and the inside of the cable core are filled with water-blocking cable paste, ensuring the moisture-proof and water-blocking effects of the optical cable.
• The optical cable has excellent flexibility and resistance to bending.
• The longitudinal wrapping of the cable core with aluminum strips makes the moisture-proof effect of the optical cable better and also gives it a certain compressive resistance capacity.
• The steel wire armor layer endows the optical cable with better compressive and tensile strength.