FTTH drop optical cable models with metal reinforcements include: GJXH, GJYXCH (self-supporting), non-metal reinforcement leather optical cable models include: GJXFH, GJYXFCH (self-supporting), indoor butterfly optical cables include 1 core, 2 core, 4 core Core and other. FTTH drop optical cable models with metal reinforcements include: GJXH, GJYXCH (self-supporting), non-metal reinforcement leather optical cable models include: GJXFH, GJYXFCH (self-supporting), indoor butterfly optical cables include 1 core, 2 core, 4 core Core and other. The name comes from the cross-section: a flat, wing-shaped profile with the optical fiber sitting in the center and two parallel strength members flanking it on either side. This geometry gives the cable its distinctive look — and its core advantages. Unlike round drop cables, the butterfly form is. Fiber-to-the-home (FTTH) directly uses optical fiber to connect communication lines from the central office directly to users' homes. It has unparalleled advantages in bandwidth and can realize comprehensive access to multiple services. They are called butterfly-shaped due to their unique design, which features a flat shape with two parallel fiber ribbons running down the center. The versatility of butterfly cables is showcased through their wide array of applications.