Feeder optical cable distribution optical cable

Feeder optical cables carry high-capacity fiber from the central office to distribution points, while distribution optical cables extend the network from these points to local neighborhoods or buildings.

Feeder Optical Cables

Feeder cables, also known as trunk cables, are the backbone of a fiber optic network. They run from the Access Node or central office to Fiber Distribution Points such as street cabinets or building entrance fiber boxes, covering distances of several kilometers. These cables typically have high fiber counts, often arranged in rows of 12 fibers or more, to provide sufficient capacity for multiple distribution cables.

Feeder cables are usually deployed in a ring topology, which enhances network reliability and allows for future expansion. They are designed for outdoor use, often in loose tube or ribbon configurations, and can be installed in ducts, aerially, or buried underground.

Distribution Optical Cables

Distribution cables serve as the intermediate link between feeder cables and the subscriber premises. They run from Local Convergence Points (LCPs) or Fiber Concentration Points (FCPs) to the entrances of neighborhoods or buildings, typically covering distances of less than 1 km. These cables are smaller, lighter, and more flexible than feeder cables, making them suitable for indoor or short outdoor runs.

They often contain tight-buffered fibers bundled under a single jacket with Kevlar or fiberglass reinforcement to prevent kinking and ensure durability. Distribution cables are commonly used in riser, plenum, or conduit installations and are optimized for easy termination and splicing. Key DifferencesFeatureFeeder CableDistribution CableFunctionBackbone from central office to distribution pointsConnects distribution points to local areas or buildingsDistanceSeveral kilometersTypically