Optical Fiber Communication
Optical fiber communication technology has emerged from optical communication and has become one of the main pillars of modern communication. It plays an important role in modern telecommunication networks.As an emerging technology, optical fiber communication has developed rapidly in recent years and is widely used in the history of communication. It is also an important symbol of the world’s new technological revolution and the main transmission tool for various information in the future information society.
Characteristics of optical fiber communication
1.Broadband information capacity is large
The optical fiber communication capacity is large, and the transmission width of the optical fiber is much larger than the width of the cable or the copper wire. However, for a single-wavelength optical fiber system, since the terminal device is greatly limited, the transmission width of the optical fiber is often not exhibited. Therefore, scientific techniques are needed to increase the capacity of transmission.
2.Low loss, can be transmitted over long distances
The loss rate of optical fiber communication is much lower than the common communication loss rate. The optical fiber not only has low loss, but also can communicate over long distances. The longest communication distance can reach more than 10,000 meters, so optical fiber communication is more practical for social networks. The place where the amount of information is compared and fiber-optic communication cost is relatively high, with good security.
3.Strong anti-electromagnetic interference
The optical fiber is mainly an insulator material made of quartz as a raw material, and the material is excellent in insulation and is not easily corroded.The most important feature of optical fiber communication is its strong anti-electromagnetic interference capability, and it is not affected by natural sunspot activity, ionospheric changes and lightning interference, and it is not subject to artificial electromagnetic interference.And the optical fiber communication can also be combined with the power conductor to form a double-row optical cable or parallel with the high-voltage power line. This characteristic of optical fiber communication plays a great role in the communication system in the field of strong electric power. Optical power communication can also be applied to the military because it can be free from the interference of electromagnetic pulse.
4.Good security and confidentiality
In the transmission of radio waves in the past, since electromagnetic waves leak during the transmission process, interference of various transmission systems is caused, and confidentiality is not good.However, optical fiber communication mainly uses light waves to transmit signals. The optical signals are completely confined to the structure of the optical waveguide, and other leaked rays are absorbed by the outer sheath of the optical fiber, even in a ring with a bad condition or a corner. There are also few light wave leaks. Moreover, in the process of optical fiber communication, many optical fiber cables can be put into one optical cable without interference. Therefore, optical fiber communication has strong anti-interference ability and confidentiality, and the security performance of optical fiber communication is also very high.