FTTH optical cable
FTTH cable is a fiber optic cable with a power element that is laid from the equipment used by Internet providers to the user terminal installed in the home. The signal in the network is transmitted due to the movement of the light flux.
FTTH subscriber cable is allowed to be used in cottage villages and the private sector. There are no technical restrictions for use in apartment buildings, but due to the high cost of cable and equipment, such a solution is not in demand. The protective sheath of the FTTH cable allows it to withstand temperature changes and precipitation. Therefore, the line can be drawn on the street, from pillar to room or from pillar to pillar. In houses, the cable can be laid in special trays, behind the baseboard or in the pipeline, and in multi-storey buildings in shafts.
The main advantage is that at a distance of 15-20 km from the communication center, the cable can transmit a signal without loss, which eliminates the need to install special signal amplifiers. Laying lines using FTTH cables allows you to reduce energy consumption and maintenance costs for technical premises, since there is no need to install switching equipment.
Advantages of FTTH cable
Depending on the type, an FTTH optical cable consists of one or more fibers that are located inside a plastic sheath that acts as a mirror to reflect and move light. Armored cover, Kevlar or steel wire serve as strength elements.
The LSZH external protective sheath makes it possible to lay cables in homes or offices; in the event of a fire, it does not smoke or emit toxic substances. The fragile structure of the cable is reliably protected and is not afraid of impacts, twisting or stretching.
In a FTTH fiber optic cable, the number of fibers depends on the network design, that is, on its topology and the number of transceiver nodes. In practice, the following are most often used:
- FTTH cable 1 fiber;
- 2 fiber FTTH cable;
- 4 fiber FTTH optical cable.
Passive networks based on FTTH fiber optic cable are recognized for their durability and high signal transmission speed. Benefits of using the FTTH network:
- high network reliability due to the technical parameters of the cable and the absence of the need to use remote power;
- it is easy to reconnect the network by reinstalling cross-connect equipment;
- just build a parallel network and you can abandon the reverse channel.
The price of a fiber optic FTTH cable is 20% higher compared to FTTC cables, but the difference can be compensated for by a rational choice of additional equipment.