ODN optical cables can be divided into

Optical cables in an ODN are typically divided into feeder, distribution, drop, and premises/home segments.Segmentation of Optical CablesFeeder Cable (Backbone)Connects the Optical Line Terminal (OLT) at the central office to the first-level distribution point or cabinet.Serves as the trunk fiber for long-distance coverage.Can be arranged in ring or tree topologies to ensure redundancy and reliability .Distribution CableExtends from the feeder or backbone cabinet to distribution cabinets near user areas, such as communities or commercial buildings.Supports tree, chain, or ring network structures.Often terminates at a distribution point where fibers are split to serve multiple subscribers .Drop CableConnects the distribution point directly to the subscriber's premises.This segment is the most sensitive to installation quality, bending radius, and environmental factors.Typically uses pre-connectorized or armored fibers for durability and ease of deployment .Premises/Home SegmentThe final segment inside the subscriber's location, connecting the Optical Network Terminal (ONT/ONU).Ensures the optical signal is delivered for end-user services such as FTTH (Fiber to the Home) or FTTB (Fiber to the Building), .Functional OverviewFeeder and distribution cables form the main transport network, handling high-capacity traffic.Drop cables provide the last-mile connection, often in point-to-multipoint topologies using optical splitters.Premises cables complete the network, enabling bi-directional optical signal transmission to the end-user devices . This segmentation allows for efficient network design, maintenance, and scalability, ensuring that optical signals are reliably transmitted from the central office to individual subscribers while minimizing operational costs and signal loss.