In the global expansion of optical communication networks—including FTTx access, rural telecom coverage, long-haul backbone links, and smart power grid construction—aerial fiber optic cable has become one of the most practical and widely used transmission mediums. As the name suggests, aerial fiber optic cable is designed for overhead installation, suspended between utility poles, communication towers, transmission towers, or other supporting structures. It provides stable, high-speed optical signal transmission across long distances and complex terrains, effectively connecting urban centers, suburbs, rural areas, mountainous regions, and even cross-river or cross-road communication nodes.
Compared with underground direct-buried or duct optical cables, aerial fiber optic cables feature lower construction costs, faster deployment, and greater flexibility in terrain adaptation. For this reason, they remain irreplaceable in many telecom and power network projects. Weunion specializes in the R&D, production, and supply of high-performance aerial fiber optic cables, including ADSS, Figure 8, and OPGW types, all engineered to withstand harsh outdoor environments while delivering stable transmission performance.
What Is Aerial Fiber Optic Cable?
Aerial fiber optic cable is a specialized outdoor optical cable designed exclusively for overhead deployment. Unlike indoor cables or buried outdoor cables, it must withstand long-term outdoor environmental stress—including wind, ice, snow, ultraviolet radiation, extreme temperatures, and mechanical tension—while maintaining stable optical signal transmission.
This type of cable is mounted above ground level, supported by poles or towers, making it ideal for regions where underground cabling is difficult or expensive, such as mountainous areas, wetlands, rural zones, and areas with dense road networks. Aerial fiber optic cables support both single-mode and multi-mode fiber cores, although single-mode is predominantly used for long-distance, high-bandwidth communication. They serve as critical links in telecom operator backbones, enterprise private networks, smart power systems, and rural broadband projects.
Weunion aerial fiber optic cables are manufactured in compliance with international standards such as ITU-T, IEC, and TIA/EIA, ensuring excellent mechanical performance, weather resistance, and long service life even in the harshest outdoor conditions.
Classification of Aerial Fiber Optic Cables
Aerial fiber optic cables can be classified in multiple ways, but the most practical and industry-accepted division is based on load-bearing structure and installation method. They are first split into catenary aerial cables and self-supporting aerial cables.
1. Catenary Aerial Fiber Cable
Catenary-type optical cables rely on an independent steel messenger wire or suspension cable to bear mechanical tension. The optical cable itself is attached to the messenger wire using cable ties or suspension clamps, meaning the cable does not carry significant weight or tension during installation and use.
This structure was widely used in early overhead communication projects but has gradually been replaced by self-supporting cables due to higher material costs, more complex installation, and lower stability. Today, catenary cables are only used in specific small-scale or reconstruction projects.
2. Self-Supporting Aerial Fiber Cable
Self-supporting aerial fiber optic cables integrate a tensile strength member directly into their structure, allowing them to be mounted directly on poles or towers without an external messenger wire. This design simplifies installation, improves reliability, and reduces overall project costs.
Currently, self-supporting aerial cables dominate the global market, with three mainstream types:
ADSS Cable (All-Dielectric Self-Supporting)
Figure 8 Aerial Fiber Cable
OPGW Cable (Optical Ground Wire)
Each type has unique structural characteristics and application scenarios, making them suitable for different network environments.
Main Types of Aerial Fiber Optic Cables (Detailed Introduction)
1. ADSS Cable (All-Dielectric Self-Supporting Cable)
ADSS aerial fiber cable is a fully non-metallic, self-supporting optical cable widely used in high-voltage power environments and communication networks. Its entire structure—including the strength member, insulation, and sheath—uses dielectric materials, meaning it contains no metal components.
Core Features of ADSS Cable
Excellent electrical insulation: Non-metallic design ensures safety when installed near high-voltage transmission lines, with no risk of induced current or short circuit.
Anti-electromagnetic interference (EMI) and lightning protection: Immune to electromagnetic interference from power lines, making it highly stable in power grid corridors.
Light weight and small diameter: Reduces load on poles and towers, suitable for long-span installation.
High tensile strength: Built with aramid yarn strength members to support spans of 100 meters or more.
Weather and UV resistance: Special PE or AT sheath resists aging, ultraviolet radiation, and chemical corrosion.
Applications of ADSS Cable
ADSS cables are primarily used in:
High-voltage power transmission corridors for communication and monitoring
Areas with frequent lightning strikes
Long-distance overhead communication lines
Mountainous and high-altitude regions with complex terrain
Weunion ADSS cables are available in spans from 50m to 1000m, with customizable fiber counts (4–144 cores) to meet different project requirements.
2. Figure 8 Aerial Fiber Optic Cable
Figure 8 aerial fiber cable is one of the most commonly used self-supporting overhead cables for civilian and telecom access networks. Its cross-section resembles the number “8”, with one part housing the optical fiber unit and the other integrating a steel messenger wire for tensile support.
Common model numbers include GYTC8A, GYTC8S, GYXTC8Y, and other standardized structures.
Core Features of Figure 8 Cable
Integrated messenger wire: Provides high tensile strength without requiring external suspension cables.
Easy and fast installation: Reduces construction time and labor costs significantly.
Compact structure: Small size, light weight, and convenient for transportation and deployment.
Strong environmental resistance: Waterproof, UV-resistant, and temperature-stable for long-term outdoor use.
Cost-effective: Lower material and installation cost compared to ADSS and OPGW.
Applications of Figure 8 Aerial Cable
Figure 8 fiber cables are widely used in:
Rural FTTH and FTTx access networks
Short-to-medium distance overhead communication links
Residential and industrial park distributed cabling
Cross-road, cross-river, and overhead wiring in suburban areas
Weunion Figure 8 aerial cables support single-mode fiber, with fiber counts ranging from 2 to 24 cores, ideal for telecom operators and broadband access projects.
3. OPGW Cable (Optical Ground Wire)
OPGW cable is a dual-function composite cable used exclusively in high-voltage power transmission systems. It integrates optical fiber units into a power ground wire, serving both as a lightning-protection ground wire for power grids and as a high-speed communication channel.
Core Features of OPGW Cable
Dual functionality: Combines power system grounding and optical communication.
Ultra-high mechanical strength: Resists strong winds, ice coating, and extreme tension.
Corrosion and aging resistance: Suitable for long-term use in outdoor power corridors.
Anti-electromagnetic interference: Stable signal transmission even in strong electric fields.
Long service life: Designed to match the lifespan of power transmission lines (30+ years).
Applications of OPGW Cable
OPGW cables are mainly used in:
110kV, 220kV, 500kV, and 800kV high-voltage transmission lines
Smart grid communication and status monitoring
Power system backbone communication networks
Long-distance overhead power and communication integration projects
Weunion OPGW cables are customizable in fiber count, diameter, and tensile strength to match different voltage levels and tower distances.
Core Features of Aerial Fiber Optic Cables
Aerial fiber optic cables must meet strict performance requirements to operate reliably in outdoor environments. Below are the essential characteristics shared by high-quality aerial cables, including all Weunion aerial fiber products.
1. High Tensile Strength
Aerial cables must support their own weight and resist external forces such as wind, ice, and temperature expansion. High-quality tensile members (aramid yarn, steel wire, or aluminum-clad steel) ensure stable performance under long-term tension.
2. Excellent Environmental Protection Performance
The outer sheath and internal structure provide comprehensive protection against:
Rainwater and moisture penetration
Ultraviolet radiation and thermal aging
Extreme high and low temperatures
Wind, snow, ice, and bird damage
3. High Bandwidth and Long Transmission Distance
Aerial fiber cables use high-quality single-mode fiber cores with low attenuation and high bandwidth, supporting 10G, 40G, 100G, and higher transmission rates over dozens of kilometers.
4. Easy Installation and Maintenance
Unlike buried cables, aerial cables can be installed and repaired quickly using aerial lifts or manual climbing. This greatly reduces construction difficulty, shortens project cycles, and lowers maintenance costs.
5. Strong Terrain and Environment Adaptability
Aerial fiber optic cables can be deployed across:
Urban areas
Rural villages
Mountainous and hilly regions
Rivers, highways, and railways
Coastal and high-altitude areas
This flexibility makes them essential for global network coverage.
How to Choose the Right Aerial Fiber Optic Cable
Selecting the appropriate aerial fiber cable depends on your application environment, project requirements, and budget. Weunion provides the following professional guidance:
Choose Figure 8 cable for FTTH, rural broadband, and short-distance access networks.
Choose ADSS cable for installation near high-voltage power lines or in strong EMI environments.
Choose OPGW cable for power grid projects requiring integrated ground and communication functions.
Consider span distance, fiber core count, weather conditions, and service life when customizing cables.
Conclusion
Aerial fiber optic cable is a cornerstone of modern outdoor optical communication, offering high flexibility, reliability, and cost efficiency for long-distance and complex-terrain network construction. The three mainstream types—ADSS, Figure 8, and OPGW—each serve unique scenarios in telecom, power, and broadband access networks.
Choosing high-quality aerial fiber cable is critical to ensuring network stability and long-term operation. Weunion is a professional supplier of aerial fiber optic cables, providing reliable, standards-compliant, and customizable solutions for global customers. Whether you are building a rural broadband network, a smart power grid, or a long-distance telecom backbone, Weunion aerial fiber cables deliver the performance and durability your project demands.
