Butterfly-shaped optical cables are primarily designed for indoor use, but certain variants are engineered for outdoor or mixed indoor/outdoor applications.

Indoor Use

Butterfly-shaped optical cables are widely used in indoor environments, such as inside buildings, data centers, and residential or commercial premises . Their flat, compact design allows easy installation in tight spaces, along walls, ceilings, or conduits, and reduces bending stress during routing . Indoor variants typically feature LSZH (Low Smoke Zero Halogen) or PVC jackets, which enhance fire safety and minimize toxic emissions, making them ideal for confined spaces . They are highly flexible, support high data rates, and are resistant to electromagnetic interference, ensuring reliable performance in dense network environments .

Outdoor or Mixed Use

Some butterfly-shaped cables, particularly FTTH drop cables, are designed for outdoor or mixed indoor/outdoor deployment . These cables often include UV-resistant PE jackets and reinforced strength members (FRP or steel wire) to withstand environmental stress, moisture, and temperature variations . Outdoor variants are commonly used for last-mile connections, aerial installations, or wall-mounted routes where durability and self-supporting capabilities are required . The flat geometry still provides easy handling and installation while maintaining optical performance.

Summary

• Indoor-only butterfly cables: Compact, flexible, LSZH/PVC jackets, ideal for tight spaces and data centers .
• Outdoor-capable butterfly/drop cables: Reinforced jackets, UV-resistant, self-supporting, suitable for aerial or wall-mounted FTTH installations . In conclusion, while the standard butterfly-shaped optical cable is primarily for indoor use, specialized variants exist for outdoor or mixed applications, offering flexibility, durability, and ease of installation across different environments.