An FTTH butterfly optical cable — also referred to as a flat drop fiber cable — is a compact, single-mode fiber optic cable engineered specifically for last-mile broadband delivery. Its name comes from the cable's cross-sectional profile: a flat, symmetrical shape in which two strength members. This type of cable gets its name from its butterfly-like cross-sectional shape. They are called butterfly-shaped due to their unique design, which features a flat shape with two parallel fiber ribbons running down the center. FTTH drop cable is widely used in the access network due to its softness and lightness; because its shape is butterfly-shaped; it is also called butterfly cable, 8 digit optical cable, and FTTH drop cable is usually 1core,2core or 4core. It has the advantages of small outer diameter, light weight, low cost, reliable performance, and easy installation. It is the leading product for fiber optic cable in the. FTTH (Fiber to the Home) - "drop cable" is a flat optical subscriber cable, it is used in FTTH networks for laying both indoors and for pulling between buildings and poles. It is also called the "last mile" or "fiber to the home" cable.