What is an optical outlet
Optical outlet: general information
Optical outlet is installed in the subscriber's premises. Its purpose is to lay the fiber and terminate the optical cable. The number of models of such devices is varied. These may be compact plastic samples. Other sockets are made of metal in the form of small cross-panels. The main requirement for such devices is high-quality, reliable protection of fibers from damage and providing access to the working elements of the optical network.
The design of the optical outlet ensures convenience when working with fiber optic cable. The device is equipped with holders of liners for reliable protection of welds of fiber. The technological holes of the optical outlet are arranged so that the cable can be inserted into the device from different sides.
Some models of optical outlets are designed for indoor installation, others can be used for outdoor use.The latter type is supplied with protection from the harmful effects of the environment: dirt, water, dust, sunlight. Consumer size sockets are quite affordable for users of very different incomes.
Installation of an optical outlet
Installing an optical outlet is not much different from installing a cross-panel. The difference is only in the scope of work. To begin with, the outlet housing (box) is fixed on the wall outside or indoors (the installation location depends on the type of device and the user's preferences). Then, with the help of a special element, the input cable is fixed, which is part of the optical outlet.
The next stage of installation is cable cutting. The fiber is thoroughly cleaned of a hydrophobic gel and prepared with a compound with pitgeyl, at one end of which there is a special plug. Pitgeil is the same fiber optic cable, but it is equipped with a connector on one side only.
After welding, the resulting seam is checked to identify possible hidden defects. Typically, a pocket detector is used for this purpose. It remains to protect the weld with a liner and lay it together with a reserve of fiber in a special cell.The installation procedure of the optical outlet takes much less time than laying the fiber to the room. Now the optical outlet is ready to connect active network equipment.
How to choose an optical outlet
When choosing an optical outlet, it is necessary to assess the compliance of the model with the required parameters. Of particular importance is the number of seats for adapters, the method of fixing the cable, the presence and location of holes for its entry into the outlet. It is also necessary to clarify in advance whether the selected outlet can be installed outside or indoors. Modern optical sockets can work effectively in the temperature range from -40 to +75 degrees Celsius.
The use of optical sockets makes it possible to create a detachable connection and ensure the excellent quality of the signal transmitted over the cable. Such devices are widely used in sound and computer networks.
The peculiarity of connecting optical fibers is that they are sensitive to shear. Offset fiber micron can dramatically reduce the signal power. For this reason, the quality of the connecting device, which is an optical outlet, directly affects the stability of all equipment.
It is customary to distinguish between transient and connecting sockets, which differ in the type of connectors to be connected. When connecting devices of the same type, use a connecting adapter. For connectors of different types of adapter suitable transition. Optical sockets are known, the main purpose of which is a temporary connection of fibers, which is important when testing equipment.
The design of the outlet, having the form of an adapter, includes a housing, a centering sleeve, and fastening elements. The main component of the design is the centralizer (sleeve). Its purpose is to connect optical fibers. The centering sleeve looks like a tube of metal or ceramic. The quality of its manufacture directly depends on the reliability of the connection. Choosing a socket, you should give preference to a ceramic centralizer, made on the basis of zirconium dioxide.
Some types of optical outlets
One of the factors that determine the choice of an optical outlet model is the type of connector used.
The maximum quality of connections, according to experts, is able to guarantee an optical outlet type FC (Ferrule Connector).Such adapters are often used in the most important fiber-optic networks. Their main advantage is the high quality of the material from which they are made. The reliability of the fixed connection in the FC-adapter is achieved by the presence of special grooves and a spring-type connection mechanism. The disadvantage of this standard is the need to provide free space for connecting a screwed-in connector. With a dense arrangement of contacts to use the outlet of this type is difficult.
The optical SC socket (Subscriber Connector) differs from FC-models mainly by the square shape of the case. The fixing of the connectors in these devices is done with a latch. SC adapter is cheaper than FC. The disadvantage of the model is that touching the connector can significantly degrade the quality of the transmitted signal.
The main distinguishing feature of the LC-adapter (Lucent Connector) is its compact size. This outlet can be used with success when there is a tight connection of optical cables, which is often found in office centers and server groups.
The efforts of the developers of optical outlets are currently aimed at reducing the attenuation during signal transmission.This is achieved using zirconium-based ceramics and a high quality connector. It should be noted that with a small length of the optical network, the use of optical outlets is not a critical factor reducing the quality of the transmitted signal. The deterioration of the signal characteristics becomes a problem mainly for networks of considerable length.
To ensure the smooth operation of optical outlets is possible with timely preventive maintenance. It is necessary to exclude or minimize the possibility of moisture and dust getting inside the adapter, which leads to a loss of signal power and the occurrence of so-called back reflection. The simplest preventive measure is to regularly flush the sockets with compressed air.