Butterfly-shaped optical cable product parameters

Butterfly-shaped optical cables feature a flat, wing-like profile with central optical fibers flanked by parallel strength members, designed for bend resistance, easy installation, and both indoor and outdoor deployment.Cable StructureButterfly-shaped cables have a flat, wing-shaped cross-section with the optical fiber positioned at the center and two parallel Fiber Reinforced Plastic (FRP) strength members on either side, providing compression resistance and fiber protection . Outdoor self-supporting variants may include an additional steel wire messenger for aerial spans . The flat design allows bending in the natural plane with minimal stress, while edge-on bending requires more force, reducing accidental kinks .Fiber TypeThese cables almost universally use bend-insensitive single-mode fibers, typically compliant with ITU-T G.657 standards. Subtypes include:G.657.A1: Suitable for residential and light commercial use, tolerates 10 mm bend radii, and is compatible with legacy G.652.D fibers.G.657.A2: Recommended for routing through conduits with sharp bends or irregular surfaces .Sheath and Environmental RatingsIndoor cables (GJXH): LSZH (Low Smoke Zero Halogen) sheath, lightweight, flexible, designed for building entry to ONT connections, fiber counts from 1–12 cores .Outdoor self-supporting cables (GJYXFCH/GJXFH): LSZH sheath with steel messenger, sometimes reinforced with steel tape and PE outer sheath for UV and moisture resistance, suitable for aerial or pipeline deployment .Fiber Counts and ApplicationsIndoor: 1–4 cores for single-unit residential, up to 12 cores for multi-tenant buildings .Outdoor: Typically 1–2 cores for FTTH aerial drops, spans up to 50 meters without external support .Installation and Connection MethodsButterfly-shaped cables support multiple connection methods:Fusion splicing: Permanent, low-loss connections using heat to weld fibers .Mechanical splicing: Uses connectors to align fibers without heat, suitable for temporary connections .Direct termination: Attaching connectors directly to the cable end for patch panels or equipment .Pigtail splicing: Splicing a short fiber segment to the cable end, then terminating with a connector, offering easy replacement and low-loss performance .Key AdvantagesBend resistance and minimal stress during installation.Non-metallic FRP strength members provide EMI immunity and lightning safety.Lightweight and flexible for indoor routing, with reinforced outdoor variants for aerial or pipeline use.High bandwidth and low signal loss, suitable for FTTH, CATV, and high-speed telecommunication networks . These specifications make butterfly-shaped optical cables a versatile choice for both indoor and outdoor fiber deployments, offering durability, ease of installation, and reliable performance.