Specialists from St. Petersburg Electrotechnical University "LETI" have developed a fiber optic communication line using the technical effect of "passive optical amplification." This will allow information to be transmitted without the use of expensive power amplifiers.
We have developed a fiber optic communication line that allows information to be transmitted over a significant distance without the use of expensive power amplifiers. This is the second device we have implemented using commercially available, mass-produced components, operating on the principle of "passive optical amplification" of a microwave signal.
Fiber optic communication is a method of transmitting information in which electromagnetic waves of the optical range are used as a signal carrier. Data is transmitted through special fiber optic cables.
The data transfer rate over fiber optic lines is significantly higher than that of other communication systems, and can reach terabytes per second. In addition, an analog radio signal can be transmitted over fiber optics using intensity modulation of the optical signal.
Currently, fiber optic communication is actively used in various fields, including computers, onboard systems of spacecraft, airplanes, and ships. It is also used for transmitting data over long distances.
However, fiber optic communication has its limitations when transmitting analog radio signals. In particular, the signal quality may deteriorate when transmitting data over long distances. To solve this problem, special power amplifiers are used in such communication systems. This increases the size of the equipment, the noise level in the communication channel, and the costs of the already expensive infrastructure.
Our development can be used in existing and future radars – photonic radars and fiber optic communication lines, it will improve the transmission of radio signals over relatively long distances. At the same time, the equipment itself will become more compact, as it does not require amplifiers and the corresponding infrastructure for them.
Earlier, scientists from Saratov University made an important discovery. They learned how to improve communication in telephones, radios, and Wi-Fi. Specialists have created Bragg resonances in plates of periodic ferromagnetic semiconductors for the first time in the world.
Read materials on the topic:
A satellite quantum communication system will appear in Russia by 2030