Centralized Split Architecture

In this type of architecture, each subscriber is connected to an FDH via a dedicated fiber (1:32). This means it:

• Is frequently implemented in areas where a large central office serves clusters of homes.
• Lean fiber feeder cables extending from the central office to the cabinet, with high fiber density extending to subscribers (1:1).
• Allows for easy adjustment of split ratios and transport technologies.
• Uses centralized splitter placement to enhance Central Office (CO) OLT effiiciency.

Distributed Split Architecture

In this architecture, a dedicated fiber drop cable links each subscriber to the nearest splitter terminal access point. This means it:

• Is a slimmer fiber architecture which uses distribution cables and a lower-fiber-count feeder.
• Has flexible split ratios with options for 2, 4 and 8 splitters.
• Uses smaller splitter access points at the initial split layer compared to Centralized Split.
• Has limited flexibility for future modifications.

Distributed TAP Architecture

Distributed tap architectures are among the most lean fiber designs available. Wave band couplers, allow for the uneven split terminal to utilize a single-fiber for distribution. The terminals are then concatenated for optimal link loss. This means it:

• Is a lean fiber architecture which uses uneven split terminals.
• Has flexible split ratios with options for 2, 4 and 8 splitters.
• Has limited flexibility for future modifications.