Corning Optical Communications field trials have confirmed that a single air-assisted device can install 1500 to 2100 meters (5000 to 7000 feet) of optical fiber cable under good conditions. Longer lengths can be achieved by cascading devices (i., providing mid-assist). 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. They are called butterfly-shaped due to their unique design, which features a flat shape with two parallel fiber ribbons running down the center. On runs from 40m to 100m, use proper lubricants and make sure they are compatible with the cable jacket. If possible, use an automated puller with tension control or at least a breakaway-pulling eye. Pulling the cable at a lower bend radius increases the compression forces on the cable core which can. The invention belongs to the technical field of optical cables, and discloses a butterfly-shaped drop-in optical cable for communication, which has a fitting part (1), a plurality of protection bodies (2), a plurality of butterfly-shaped drop-in units (3), a protective layer (4), The outer sheath. The objective of this document is to be an optical fibre cable installation and laying guide, addressed to new installers, also being useful as a reminder to experienced installers. We should always consider the restrictions established by different administrations related to this matter.