Self-supporting optical cable gyac

GYAC/GYAX series self-supporting optical cables are figure-8 aerial fiber cables designed for outdoor deployment, combining optical transmission and mechanical support in a single compact structure.

Cable Structure and Materials

These cables feature a figure-8 design, where one part houses the optical fibers in a loose tube made of high-modulus plastic filled with water-blocking gel, and the other part serves as a messenger for mechanical support, typically a steel wire or FRP rod . The loose tube is armored with aramid yarns for tensile strength, and the entire assembly is protected by a PE or aluminum-polyethylene sheath . Some variants include double jackets or flame-retardant LSZH options for enhanced protection .

Fiber Types and Capacity

The GYAC/GYAX series supports single-mode (G.652D, G.657.A1, G.655D) and multimode fibers (OM3, OM4), with core counts ranging from 2 to 288 fibers . Fibers are color-coded for easy identification, and the loose tube design ensures minimal microbending and mechanical stress during installation .

Applications

These cables are ideal for aerial installations in both urban and rural environments, serving as backbone feeder lines, last-mile access networks, and subscriber connections . The figure-8 design allows self-supporting deployment between poles, eliminating the need for additional support structures. They are suitable for long-haul, junction, and local area network systems .

Mechanical and Environmental Performance

• Tensile Strength: High, due to aramid yarn reinforcement and steel/FRP messenger
• Temperature Range: -40°C to +70°C
• Water Resistance: Achieved through water-blocking gel and dry water-blocking materials
• Durability: Resistant to outdoor environmental conditions, UV exposure, and mechanical stress

Installation Advantages

• Self-supporting: No need for additional support cables
• Ease of aerial deployment: Figure-8 shape simplifies pole-to-pole installation
• Compact design: Combines fiber transmission and mechanical support in one cable
• Versatility: Suitable for both rural and urban telecom networks In summary, GYAC/GYAX self-supporting optical cables provide a robust, versatile solution for aerial fiber deployment, offering high tensile strength, environmental resilience, and ease of installation for a wide range of telecom applications.