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Single-mode four-core outdoor fiber optic model

Fiber optic splice closure knowledge brief Published 17 Dec 2020

Prepared for preliminary research by the RIVO OPTICAL knowledge desk. Confirm cable count, splice capacity, sealing class, tray layout, protection sleeves and installation requirements against current standards and product documentation.

A four-core single-mode outdoor fiber optic cable is designed for long-distance, high-speed data transmission with robust outdoor protection and can support multiple telecom operators simultaneously.Key Features and Construction
  • Fiber Type: Single-mode optical fiber, typically made of high-purity silica with germanium doping, compliant with ITU-T G.657.A standards for bend insensitivity .
  • Core Count: 4 cores, often arranged as 2x2 in Siamese models or in a loose tube configuration .
  • Protective Layers: Includes UV-curable acrylate coating on fibers, PE (polyethylene) outer sheath, multi-strand aramid yarn for tensile strength, and FRP (fiber-reinforced plastic) rods for additional mechanical protection .
  • Outdoor Suitability: Designed for direct burial, aerial installation with steel messenger wires, or duct installation. Features rodent protection, water-blocking jelly, and resistance to UV, moisture, and temperature variations .
  • Diameter Options: Common diameters range from 5.5 mm to 7.0 mm depending on manufacturer and cable design .
  • Performance: Supports high-speed data transmission for FTTH, GPON, or telecom networks. Tested for splice loss, length, and integrity using OTDR at wavelengths 1310, 1550, and 1625 nm .
Advantages
  • Multi-Operator Support: Siamese models allow a single cable to serve two independent telecom operators, reducing installation and material costs .
  • Durability: Designed to withstand mechanical stress, bending, and environmental factors, ensuring long-term reliability in outdoor deployments .
  • Ease of Installation: Supplied on drums with pulling aids and rodent protection, suitable for aerial or underground installation .
Applications
  • FTTH (Fiber to the Home) networks
  • GPON (Gigabit Passive Optical Networks)
  • Long-distance outdoor telecom links
  • High-speed data transmission in urban and rural areas
Suppliers and Models
  • Astel FTTH 4-Core Siamese Cable: Bend-insensitive, supports dual operators, includes FRP rods and steel messenger .
  • GYXTW 4-Core Outdoor Cable: Loose tube design, suitable for aerial and duct installations, available in lengths up to 1000 meters .
  • Jera Line 4-Core Drop Cable: Round drop cable with PE cover, aramid yarn, PBT loose tube, and jelly compound, tested with OTDR .
  • Hanxin 4-Core Outdoor Cable: Multiple diameter options, high-quality production lines, widely used in telecom, high-speed rail, and industrial applications .
  • Fiber24 Loose Tube 4-Core OS2 Cable: LC/UPC connectors, rodent protection, suitable for tube or underground installation . These cables are widely available from manufacturers and distributors, and selection depends on installation environment, mechanical protection needs, and network requirements.

Single-mode four-core outdoor fiber optic model - RIVO MULTITRADE OPTICAL SYSTEMS [PDF]

Single-mode four-core outdoor fiber optic model

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This reference is intended for preliminary fiber optic splice closure research. Compatibility, splice capacity, sealing class, tray layout, protection sleeves, installation methods, test limits and applicable standards must be verified for the specific project.

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