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Optical fiber communication 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 has developed rapidly and widely in recent years, which is rare in communication, 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.
Optical fiber is the abbreviation of optical fiber. 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. The reason for the rapid development of optical fiber Shouling old communication is mainly due to its following characteristics:
1) The communication capacity is large and the transmission distance is long;
2) Small signal crosstalk and good confidentiality performance;
3) Anti-electromagnetic interference, good transmission quality;
4) The optical fiber is small in size and light in weight, which is easy to lay and transport;
5) Abundant materials and good environmental protection;
6) No radiation, difficult to eavesdropping;
7) The optical cable has strong adaptability and long life.
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1. Optical fiber slip is a fiber made of glass or plastic, which is the abbreviation of optical fiber.
2. It can be used as a source tool for light conduction, and the principle is "total reflection of light".
3. Broadband is the broadband that can meet people's sensory balance and feelings, and is needed on the network.
4. Broadband is a dynamic and evolving concept.
5. Broadband transmission of electrical signals, optical fiber transmission of optical signals is one of the ways to achieve broadband transmission.
7. Broadband is divided into optical fiber access and ADSL access.
8. The maximum transmission capacity of ADSL is 10m, and there is no limit to optical fiber.
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1. Optical fiber is a fiber made of glass or plastic, which is the abbreviation of light guide search Daling fiber.
2. It can be used as a light conduction tool, and the principle is "total reflection of light".
3. Broadband is the broadband that can meet people's sensory feelings and needs on the network.
4. Broadband is a dynamic and developing concept that imitates the chain. Relatives.
5. Broadband transmission of electrical signals, optical fiber transmission of optical signals is one of the ways to achieve broadband transmission.
7. Broadband is divided into optical fiber access and ADSL access.
8. The maximum transmission capacity of ADSL is 10m, and there is no limit to optical fiber.
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They are all different in nature, and there are also great differences in the field of application.
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Wireless communication generally refers to communication that does not require physical connection wires, such as: radio station, wireless TV, wireless LAN, mobile phone GPRS Internet access, etc. Wireless communications include mobile communications.
Mobile communication refers to communication that can be carried out in a mobile state (non-physical connection line, wireless), and it is customary to refer to multi-** communication, such as: mobile**, mobile TV (on the bus or subway).
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Wireless is the mode of communication, the medium is wireless air, and mobile is said to be a mobile station, which is mobile.
Mobile, generally wireless Wireless is not necessarily mobile.
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Mobile communication is a type of wireless communication.
For example, satellite communication and microwave communication are wireless communications.
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What does it mean when we often talk about mobile communication networks? Today is a long time to see.
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The content of Computer Networks and Communications covers the basic concepts, principles, technologies and applications of computer networks and data communications, and reflects the latest progress of data communication and computer network technology. It mainly includes computer network overview, data communication basics, network architecture, local area network, communication network and wide area network, network interconnection technology, Internet, network operating system, network management and security technology, network comprehensive experiment, etc. >>>More