High density microduct outdoor fiber optic cable

　　1. Product Overview

　　The high density microduct outdoor fiber optic cable is engineered for long-haul, metropolitan, and access network deployments. It adopts a compact microduct bundle structure, enabling high fiber count integration within a small outer diameter. Designed to withstand harsh outdoor conditions, the cable combines mechanical robustness with low transmission loss, supporting high-speed data, voice, and video services.

　　2. Core Structural Features

　　• Microduct Bundle Design: Multiple independent microducts (typically 3–12 ducts per bundle) are stranded around a central strength member. Each microduct accommodates 2–24 fibers (G.652D/G.657A1/G.657A2), achieving fiber counts ranging from 6 to 288 cores. The microducts are made of low-friction HDPE/PTFE, facilitating air-blown fiber installation and future capacity expansion.

　　• Central Strength Member: High-modulus FRP (Fiber Reinforced Plastic) or galvanized steel wire provides excellent tensile strength and anti-buckling performance, ensuring structural stability during aerial, duct, or direct burial installation.

　　• Protective Outer Sheath: UV-resistant, moisture-proof, and corrosion-resistant HDPE (High-Density Polyethylene) or LSZH (Low Smoke Zero Halogen) sheath. The sheath features a ruggedized design with anti-rodent and anti-abrasion properties, adapting to extreme temperatures (-40℃ to +70℃) and humid/coastal environments.

　　• Fiber Protection: Each fiber is encapsulated in a tight-buffered coating (250μm/900μm) with a water-blocking gel filling in the microducts, preventing moisture ingress and ensuring long-term transmission reliability.

　　3. Key Technical Advantages

　　• Superior Fiber Density: Compared to conventional outdoor cables, the microduct structure increases fiber count per unit diameter by 30–50%, reducing duct space occupation and deployment costs.

　　• Flexible Installation & Expansion: Compatible with air-blown fiber technology, the cable allows on-demand fiber deployment and easy capacity upgrades without replacing the entire cable. The small bending radius (≥10D for static, ≥20D for dynamic) enables flexible routing in confined spaces.

　　• Exceptional Mechanical Performance: Tensile strength up to 1500N (for FRP core) and crush resistance ≥3000N/100mm, withstanding external impacts during installation and operation. The anti-torsion design ensures stable performance in aerial suspension or direct burial scenarios.

　　• Low Transmission Loss: Complies with ITU-T G.652D/G.657 standards, featuring low insertion loss (≤0.36dB/km at 1310nm, ≤0.22dB/km at 1550nm) and high return loss (≥50dB), supporting 10G/40G/100G Ethernet and WDM systems.

　　• Environmental Durability: UV stabilization, water-blocking, and corrosion-resistant materials extend the cable’s service life to over 25 years in outdoor environments, including deserts, mountains, and coastal areas.

　　4. Typical Applications

　　• Long-haul backbone networks and metropolitan area networks (MAN)

　　• Fiber-to-the-Home (FTTH), Fiber-to-the-Building (FTTB), and access network extensions

　　• Outdoor duct, aerial, and direct burial installations

　　• Industrial park, campus, and suburban communication infrastructure

　　• Emergency communication and temporary network deployment