Optical access networks are a network infrastructure linking individual endpoints – apartment homes and commercial premises with a network distribution point. These networks are especially designed for the deployment of FTTx – GPON, PtP, EPON systems. They are often built as a universal open network infrastructure – “Open Access” that can be shared by multiple service providers where different transmission technologies can be deployed. When designing optical access networks, there is a requirement for the lowest possible installation and operating costs, which is reflected in the design of the components used. An access network must be designed and installed as a nationwide one, covering a particular territory, municipality or city district, regardless of the actual use at the time of installation. It is therefore common to build key infrastructure and prepare for future easy deployment. To plan the access network, it is advisable to consistently approach and use uniform components and technologies. This will significantly affect the total cost of installation and subsequent operation and maintenance.
Components of this infrastructure include optical cables and protectors, earth connectors, optical cabinets for outdoor installation, suspension cables, markers for marking tracks, search engines,
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Optical micro cables
Microbes are optical cables designed to be blown into microtubes. These are lightweight designs with a relatively large number of fibers that are placed in a thin cable.
Optical drop cables, self-supporting and hanging
These cables are mostly designed as flat, with relatively strong dielectric supporting elements. They are designed for direct hanging between buildings, columns, etc. Drop cables usually contain only one or two threads and serve as a supply to the user’s connection in an apartment or a house.
Microtubes are HDPE pipes of a relatively small diameter designed to blow micro-cables. They are usually installed as tube bundles. For access networks, tubes with a thicker wall, suitable for direct grounding, are used.
Tensioners for suspension cables
For self-supporting cables on columns and buildings, special tensioners are used to ensure correct cable attachment.
Earth optical connectors and accessories
Multiple earth connectors are used to create a split and connect multiple fiber optic cables. These clutches include welding cassettes and holders, space for reserves, and waterproof bushings. Earth connectors are stored in cable chambers or directly buried in the ground.
Markers and search engines
To mark landing routes, special markers are stored in the excavations at the same time as the cables, and they can then be searched by a search engine.
Wall optic cabinets
Wall mounted optic cabinets are installed on the facades of houses, cellars or other uncovered locations.
Outdoor hubs use outdoor cabinets that meet the requirements for watertightness and general mechanical and thermal isolation. These are outdoor street cabinets, outdoor clutches.