Features of Gyfta optical cable

GYFTA optical cable is a lightweight, loose-tube, non-metallic reinforced fiber optic cable with aluminum tape protection, designed for outdoor aerial and duct installations.

Construction and Materials

GYFTA cables feature a central strength member made of fiber-reinforced plastic (FRP), providing high tensile strength and structural integrity. Around this core, high-modulus loose tubes containing optical fibers are helically stranded, with thixotropic gel filling the tubes to offer water-blocking and fiber protection. Filler ropes and loose tubes are twisted around the core to form a compact, circular structure, and the interstices are also filled with gel for a double-layer water-blocking system. The cable is further protected by longitudinal aluminum tape (APL) and a polyethylene (PE) outer sheath, enhancing environmental resistance and corrosion protection ( ).

Mechanical and Environmental Performance

• Tensile Strength: Short-term ≥1500 N, long-term ≥600 N ( )
• Crush Resistance: ≥1000 N/10cm without damage
• Bending Radius: Dynamic ≥20× cable diameter, Static ≥10× cable diameter
• Impact Resistance: Complies with IEC 60794-1-2 E3 standards
• Temperature Range: Operates efficiently from -40°C to +70°C ( )
• Hydrolysis Resistance: Loose tube material resists degradation in humid or wet conditions ( )

Fiber and Capacity

• Fiber Type: G.652D single-mode (optional multimode OM1/OM2/OM3/OM4/OM5)
• Operating Wavelength: 1310/1550 nm for single-mode, 850/1300 nm for multimode
• Attenuation: ≤0.36 dB/km @1310 nm, ≤0.22 dB/km @1550 nm
• Fiber Count: 2 to 144 fibers, color-coded for easy identification ( )

Key Features

• Loose Tube Design: Protects fibers from mechanical stress and simplifies installation and maintenance
• Aluminum Tape Barrier: Provides moisture resistance and additional protection
• Lightweight Construction: Facilitates handling and installation in aerial and duct environments
• Aramid Yarn Reinforcement: Enhances tensile strength and resists pulling forces during installation
• Water-Blocking Gel: Prevents moisture intrusion and improves fiber survivability
• Flame Retardant and Temperature Resistant: Suitable for harsh outdoor conditions ( )

Applications

GYFTA optical cables are ideal for telecommunications infrastructure, FTTH networks, and broadcast systems, particularly in aerial and duct installations. They are not recommended for direct burial due to their lightweight, non-metallic design ( ). In summary, GYFTA optical cables combine mechanical robustness, water resistance, lightweight design, and high fiber protection, making them suitable for demanding outdoor communication networks.