In the process of development and globalization of computer networks came the task of uniting disparate local components, located at great distances from each other.Today, to address this problem is most often used single-mode fiber optic cable.
Physically, this is a special flexible fiber is a small diameter, made of quartz glass.It is used to transmit light signals over long distances.Transmission is by reflecting the light beam from the inner side of the fiber cladding.
They are created for two main technologies.Therefore, the optical cable is singlemode and multimode.The main difference between transmission media, executed by these two technologies is the number of transmission streams of information (light rays).
single-mode fiber optic cable can provide data transmission over a wide bandwidth at a very long distance.At the same time a medium is not facing obsolescence, as it is now compatible with all network protocols that are in development or test operation.
for growing large networks need a reliable and easy to changes brought about by new technology, cable.Optical single-mode fully complies with these requirements.So he became widespread in all sectors of human activity information.For many objects, single-mode fiber optic cable is put "in reserve", as it implies a significant increase in the bandwidth required.This network designers do not even think about the fact that the cables are of similar design may be outdated, since it is virtually impossible.
Modern single-mode fiber optic cable that is used for the backbone network connections, has a number of different innovations that greatly simplify the process of deploying global networks.Therefore, they need to be aware of any self-respecting expert in building highways.
There are several major subtypes, which are divided into single-mode fiber optic cable used for installation outside of buildings:
- with fibers that are arranged in a dense coating acts as a buffer.They are very easy to install special optical connectors as required.They may also be used inside the building.The process of making these cables is quite simple - polyvinyl chloride applied directly to the glass fiber itself;
- fibers which are placed in a tube that acts as a buffer.Apart from them in the tube is filled gel, which does not give them mechanically affect each other (this prevents damage caused by the expansion of the material at elevated temperatures);
- belt type.It is characterized by the presence of a large number of fibers and high density of the materials used.
single-mode fiber optic cable is selected according to the tasks that must be solved when laying.
