With the focus getting slowly shifted to premise networking in the field of fiber optics, Indoor cable distribution has started getting more attention than ever before. FTTx deployment techniques require fiber distribution in order to reduce project costs. A fiber optic network having an intelligently designed distribution system can save a lot of money.
Generally speaking, the cost of fiber optic cable in a fiber optic project maybe around 6% of the total project cost. Civil works constitute the major portion of the fiber optic project cost. Fiber optic cable distribution design is thus important to reduce these civil works cost as far as possible.
Indoor fiber distribution hubs shall then be designed to accommodate a wide variety of distribution choices according to the service provider’s fiber network configuration. The major function of the Indoor fiber optic distribution hub or terminal is to organize and administer optical fiber cables and passive optical splitters used in an inside fiber optic plant. Indoor fiber optic distribution hub or commonly called FDH in the industry is found at the basement of the building in a Multi dwelling Unit (MDU).
Indoor fiber distribution hubs are enclosures that are used to connect feeder fiber optic cables and optical fiber distribution cables. Point to multipoint access fiber optic networks uses optical splitters housed in the fiber distribution hub. Thus splitters in an FTTx network are safer inside the FDH.
Indoor FDH is thus a vital point for interconnection in a fiber optic access network. Its importance in MDU wiring is much more important than an outside fiber optic plant. High rise buildings have telecom rooms dedicated to managing communication cables distributed from there to individual apartments.
Indoor fiber optic distribution hubs provide mechanical protection for optical fiber cables, splices and optical connectors, and optical splitters. FDHs are usually designed to accommodate a range of multiple fiber counts. Indoor fiber optic hubs shall support different connectivity options for the feeder cables and the distribution cables such as fusion splicing, mechanical connectors, field installable connectors, fanout cables, and splitters, etc.
An FDH may have provision to ground the metallic elements of a feeder of distribution cables. FDH is a fiber management point. The splitter options come in a variety of 1×4, 1×16, 1×32, etc.
Nowadays Indoor distribution hubs are available to accommodate fiber counts from 24, 48, 72, 96, 144, 196, 288, etc., depending on the subscriber density. Indoor fiber optic hubs play a major role in the maintenance and mechanical protection of the interconnection of feeder fiber optic cables and the distribution of fiber optic cables via splitters. Indeed an important junction point in a fiber optic access network configuration.