Butterfly-shaped optical cable metal type

Metal butterfly-shaped optical cables are primarily used for high-speed fiber optic data transmission in FTTH and indoor network installations, offering compact, flexible, and mechanically reinforced pathways for optical signals.

Design and Structure

Metal butterfly-shaped optical cables feature a flat, butterfly-like cross-section with two parallel optical fibers at the center, often surrounded by a metal or steel strength member for tensile reinforcement and stability during installation . The flat profile allows for space-saving routing in narrow conduits, walls, or cable trays, while maintaining precise fiber alignment to minimize signal loss . The outer jacket is typically low-smoke, halogen-free (LS0H), providing fire resistance and environmental protection .

Primary Applications

1. Fiber to the Home (FTTH) Networks: These cables are widely used to connect indoor user access points to optical network terminals (ONTs), delivering high-speed internet, voice, and video services directly to residences or offices .
2. Indoor Cabling: Their compact, flexible design makes them ideal for installation in vertical shafts, concealed pipes, walls, and cable trays, where traditional round cables may be difficult to manage .
3. High-Density and Tight-Routing Environments: The bend-insensitive fibers (G657A1/A2) and flat geometry allow the cable to maintain signal integrity even in tight corners or compact spaces, reducing microbending losses .

Advantages of Metal Reinforcement

The inclusion of a metal strength member ensures that the optical fibers are protected from tensile strain during pulling or bending, which is common in indoor installations or when routing through risers . This reinforcement enhances durability, longevity, and consistent transmission performance, making the cable suitable for both pre-terminated and on-site termination setups.

Summary

Metal butterfly-shaped optical cables combine mechanical strength, compact form factor, and high optical performance, making them ideal for FTTH deployments, indoor fiber access networks, and environments requiring flexible, space-efficient cabling. Their design ensures low signal attenuation, easy handling, and compliance with safety standards, supporting reliable high-speed data transmission in modern telecommunication networks .