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The butterfly flat FTTH drop cable is one of the most common cable types used in fiber-to-the-home installations, known for its compact design, excellent flexibility, and easy deployment. Understanding its internal structure helps installers, engineers, and users appreciate why it performs so well in modern high-speed internet networks.

At its core, the butterfly flat FTTH drop cable contains one or two optical fibers, typically G.657A1 or G.657A2, which offer superior bending performance. These fibers are positioned in the center of the cable to ensure stable transmission and protection from external forces. The fibers are usually coated with a tight buffer layer that provides additional mechanical strength and shields them from moisture and micro-bending.

On both sides of the optical fibers, two parallel strength members—often made of FRP (Fiber Reinforced Plastic) or steel wire—are incorporated. These strength members play an essential role in protecting the fibers from tensile stress during installation, especially when pulling the cable through ducts or along walls. Their symmetrical layout also keeps the cable stable and prevents twisting.

The entire assembly is wrapped in a flat, butterfly-shaped LSZH (Low Smoke Zero Halogen) or PVC outer sheath. This special structure not only gives the butterfly flat FTTH drop cable its name but also allows it to be easily routed along building surfaces, corners, and indoor environments. The flat profile ensures the cable remains discreet and aesthetically pleasing when installed in homes or offices.

Because of its lightweight and strong structure, this cable type is widely used in last-mile fiber deployment, optical network units, and indoor FTTH installations. It supports fast splicing, termination, and connectorization, making it a preferred choice for telecom operators.

In summary, the butterfly flat FTTH drop cable combines a simple yet effective structure—central fibers, reinforced side members, and a protective flat sheath—to deliver reliable performance. Its design ensures durability, ease of installation, and high-quality data transmission, making it an essential component of modern fiber-optic networks. https://www.omccable.com/product-category/ftth-drop-cable/butterfly-flat-ftth-drop-cable/