Optical fiber and optical cable communication knowledge, what are the advantages of optical fiber co

1) Large communication capacity and long transmission distance; The potential bandwidth of one fiber can reach 20thz. With such a bandwidth, it only takes about a second to transmit all the written data of human beings, ancient and modern, Chinese and foreign. At present, the 400Gbit S system has been put into commercial use.

The loss of optical fibers is extremely low, and at the vicinity of the wavelength of light, the loss of quartz fiber can be lower, which is lower than the loss of any current transmission medium. As a result, the transmission distance without a relay can be several times.

10. Even hundreds of kilometers. (2) Small signal crosstalk and good confidentiality performance;

3) Anti-electromagnetic interference, good transmission quality, electrical communication can not solve all kinds of electromagnetic interference problems, only optical fiber communication is not subject to all kinds of electromagnetic interference.

4) The optical fiber is small in size and light in weight, which is easy to lay and transport;

5) The material is abundant, the environmental protection is good, and it is conducive to saving non-ferrous metal copper. (6) There is no radiation, and it is difficult to eavesdrop, because the light waves transmitted by optical fibers cannot run out of optical fibers. (7) The optical cable has strong adaptability and long life.

What are the advantages of fiber optic communication compared to traditional cable communication?

The basic concept of optical fiber communication is to use light waves as carriers and optical fibers as the transmission medium to transmit information from one place to another, which is called "wired" optical communication.

Optical fiber communications technology stands out from optical communication and has become one of the main pillars of modern communication and plays a pivotal role in modern telecommunication networks. As an emerging technology, optical fiber communication is rare in the history of communication for its rapid development and wide application in recent years, and it is also an important symbol of the world's new technological revolution and the main transmission tool of various information in the future information society.

Principles of Fiber Optic Communication:

The principle of optical fiber communication is: at the sending end, the transmitted information (such as voice) should first be turned into an electrical signal, and then modulated to the laser beam emitted by the laser, so that the intensity of the light changes with the amplitude (frequency) of the electrical signal, and is sent out through the optical fiber; At the receiving end, the detector receives the optical signal and converts it into an electrical signal, which is demodulated and restored to the original information

With the increasing speed of information technology transmission, optical fiber technology has been widely valued and applied. In the multi-microcomputer elevator system, the application of optical fiber fully meets the requirements of correct, reliable and high-speed transmission and processing of a large number of data communications. The application of optical fiber technology in elevators has greatly improved the response speed of the entire control system, and the parallel group control performance of the elevator system has been significantly improved.

The optical fiber communication device used in the elevator is mainly composed of a light source, a photoelectric receiver and an optical fiber.

The basic concept of optical fiber communication: optical fiber is the abbreviation of optical fiber, optical fiber communication is a communication mode that uses light waves as information carriers and optical fibers as transmission mediums.

Optical fiber communications technology stands out from optical communication and has become one of the main pillars of modern communication and plays a pivotal role in modern telecommunication networks.

As an emerging technology, optical fiber communication is rare in the history of communication due to its rapid development speed and wide application in recent years, and it is also an important symbol of the world's new technological revolution and a key transmission tool for various information in the future information society.

Optical fiber communication is a communication method that uses light waves as the information carrier and optical fiber as the transmission medium. In principle, the basic material elements that make up optical fiber communication are optical fibers, light sources, and optical detectors. In addition to the classification of optical fibers according to the manufacturing process, material composition and optical properties, in applications, optical fibers are often classified according to their uses, which can be divided into optical fibers for communication and optical fibers for sensing.

The transmission medium optical fiber is divided into two types: general and special, and the functional device optical fiber refers to the optical fiber used to complete the functions of light wave amplification, shaping, frequency division, frequency doubling, modulation and optical oscillation, and often appears in the form of a functional device.

Optical fiber communication is a communication method that uses light waves as carriers and optical fibers as the transmission medium to transmit information from one place to another, which is called "wired" optical communication. Nowadays, optical fiber has become the main transmission mode in world communication because of its transmission frequency bandwidth, high anti-interference and low signal attenuation, which is far superior to the transmission of cable and microwave communication.

Fiber optic communication hunger refers to.

a.This is a communication method that uses radio waves as carriers and optical fibers as transmission mediums.

b.It is a communication method that uses light waves as carriers and optical fibers as transmission media.

c.It is a communication mode that uses light waves as carriers and cables as transmission media.

d.It is a communication mode that uses a laser as a carrier and an optical fiber as the transmission medium.

e.A communication method that uses a laser as a carrier and a cable as the transmission medium.

f.This is a communication method that uses radio waves as carriers and cables as transmission mediums.

g.It is a positive letter method that uses light waves as carriers and optical fibers as transmission media.

Correct answer: A communication mode that uses light waves as carriers and optical fibers as transmission media; It is a communication mode that uses light waves as carriers and optical fibers as transmission mediums.