Butterfly-shaped optical cable fixing device

Butterfly-shaped optical cables are fixed using specialized suspension devices and hooks to ensure stable, safe, and efficient installation in overhead and FTTH applications.Cable Structure and Advantages

Butterfly-shaped optical cables feature a flat, wing-like profile with optical fibers in the center and parallel strength members on either side, typically made of Fiber Reinforced Plastic (FRP) or steel for outdoor self-supporting variants . This design allows minimal stress when bent along the flat plane, reduces the risk of kinks, and provides directional stability during installation . They are commonly used in FTTH (fiber to the home) networks for both indoor and outdoor deployments .

Fixing MethodsOverhead Installation

For outdoor overhead wiring, butterfly optical cables are fixed using suspension devices such as ring hooks, tight hoop hooks, and fixed seats . The process involves winding the cable's suspension wire into the slot of the fixed seat, performing an S-shaped winding, and securing it with the hook and ring. This method stabilizes the cable along poles, walls, or other structures, preventing shaking, displacement, and signal loss .

Material Considerations

• Plastic parts: Typically made of ABS, resistant to high/low temperatures, aging, and environmental stress.
• Metal hooks: Made of stainless steel, rust-proof, and deformation-resistant for long-term reliability .

Structural Design Benefits

• Multi-curve path winding accommodates temperature-induced expansion/contraction and wind-induced strain.
• Maintains safe curvature and tension of the cable, extending service life.
• Allows quick replacement or upgrades without complex tools .

Connection Techniques

Once fixed, butterfly-shaped optical cables can be connected using several methods:

• Fusion splicing: Aligning and fusing individual fibers for a permanent, low-loss connection .
• Ribbon splicing: Fusing the entire fiber ribbon at once, ideal for high-density applications .
• Connectorization: Attaching connectors to fibers for plug-and-play connections, though it introduces slight signal loss .
• Pre-terminated solutions: Factory-prepared ends for rapid deployment .

Best Practices

• Ensure proper tension and curvature to avoid fiber stress.
• Use weather-resistant materials for outdoor installations.
• Wrap cable ends and suspension wires with insulating tape for additional protection.
• Select appropriate cable type (indoor FRP-only vs. outdoor self-supporting with steel messenger) based on deployment environment . By following these methods, butterfly-shaped optical cables can be securely fixed, ensuring stable signal transmission and long-term reliability in both indoor and outdoor FTTH networks.