Product Specification: ASU Outdoor Fiber Optic Cable
Product Overview
The ASU (All-Dielectric Self-Supporting Unitube) Outdoor Fiber Optic Cable is a compact, lightweight aerial solution engineered for short-to-medium span installations. As a variant of the Mini ADSS concept, it is designed to be suspended directly between utility poles without the need for a separate messenger wire, making it an ideal choice for FTTH (Fiber to the Home) access networks, 5G small-cell backhaul, and urban/suburban overhead deployments .
Structural Design
The cable features a unitube structure where 2 to 24 colored optical fibers (typically G.652D or G.657A2 single-mode) are placed within a loose tube made of high-modulus PBT (Polybutylene Terephthalate) . This tube is filled with a water-blocking gel or water-swellable yarn to prevent moisture ingress . The core strength is provided by two parallel FRP (Fiber Reinforced Plastic) rods positioned on either side, which handle tensile loads without the use of metal, ensuring a completely non-metallic construction . Finally, the cable is sheathed with a black UV- and moisture-resistant PE (Polyethylene) jacket, available with optional Anti-Tracking (AT) material for enhanced electrical safety near power lines .
Technical Specifications
Fiber Count: 1–24 cores .
Span Capability: Optimized for spans of 80m, 100m, and up to 120m .
Diameter & Weight: Compact dimensions ranging from 6.6mm to 8.2mm, with a lightweight design of approximately 40–65 kg/km, significantly lighter than traditional ADSS cables .
Mechanical Strength: Tensile strength (short-term) up to 1.5 kN to 2.0 kN; Crush resistance up to 1000 N/100mm .
Temperature Range: Operational range from -40°C to +70°C, ensuring performance in extreme climates .
Key Advantages
All-Dielectric Design: Contains no metallic components, providing inherent immunity to electromagnetic interference (EMI) and eliminating the need for grounding or bonding, which simplifies installation and reduces long-term maintenance costs .
Ease of Installation: The lightweight structure and self-supporting capability allow for rapid deployment by a small crew without heavy support hardware, significantly reducing material costs (up to 30% lower than traditional ADSS in short spans) and installation time .
Weather Resistance: The robust PE outer jacket offers excellent resistance to UV radiation and moisture, ensuring long-term durability in harsh outdoor environments .
Compatibility: Supports standard single-mode fibers, meeting ITU-T G.652D and G.657A2 standards, making it suitable for high-bandwidth applications like FTTx and smart city networks .