Key specifications of butterfly-shaped optical cables include

Butterfly-shaped optical cables feature a flat, compact design with central optical fibers, reinforced strength members, bend-insensitive fibers, and robust tensile and crush ratings, making them ideal for indoor, FTTH, and high-density network applications.

Structural Design

Butterfly-shaped optical cables have a flat, strip-like profile with optical fibers positioned at the center and reinforced by parallel strength members on both sides, typically made of FRP (Fiber Reinforced Plastic) or steel wire . This design enhances tensile strength while maintaining flexibility, allowing easy routing along walls, corners, and conduits. The flat geometry also prevents rolling and twisting during installation, reducing labor and installation time .

Fiber Type

These cables commonly use single-mode fibers, such as G.657A1 or G.657A2, which are bend-insensitive and optimized for tight indoor routing, minimizing signal loss in compact environments . They are suitable for FTTH networks, drop cables, and building entry solutions.

Sheath Material

The outer sheath is typically LSZH (Low Smoke Zero Halogen) for indoor safety or PVC/UV-resistant PE for outdoor applications . LSZH jackets improve fire safety and reduce toxic emissions, while UV-resistant PE ensures durability in outdoor or wall-mounted installations.

Mechanical and Performance Specifications

• Tensile Strength: Long-term 60N, short-term 120N, ensuring durability during installation and operation .
• Crush Resistance: Long-term 2200N/100mm, short-term 1000N/100mm, protecting fibers from mechanical stress .
• Bending Radius: Dynamic 40mm, static 20mm, allowing installation in tight spaces without signal degradation .
• Temperature Tolerance: Operates efficiently from -20°C to +60°C, suitable for diverse environmental conditions .

Applications

Butterfly-shaped optical cables are widely used in:

• FTTH networks for residential and commercial fiber access .
• Data centers and high-density networking environments where space efficiency is critical .
• Indoor cabling in buildings, offices, and industrial setups .
• Telecommunications and audio-visual systems requiring low signal loss and high reliability .

Advantages

• Space-efficient and flexible for tight installations.
• Low signal loss due to bend-insensitive fibers.
• Durable and mechanically robust, resisting tensile, crush, and bending stresses.
• Simplified installation with reduced labor and minimized risk of fiber damage. Overall, butterfly-shaped optical cables combine compact design, mechanical strength, and high-performance fibers, making them ideal for modern fiber optic deployments in both indoor and outdoor environments .