Fiber Optic Transmission, namely to optical fiber being a medium for data and signal transmission. Optical fiber, not only will be used to transmit analog signals and digital signals, and may meet the requirements of video transmission. Optical fiber transmission, generally use optical fiber cable of single optical fibre bandwith rate can reach several Gbps, regarding does not use Repeaters, transmission distance can up to few many kilometers.
Transmitting signals as pulses of light via a thinner than human hair strand of glass or plastic at data carrying capacity (bandwidth) far greater than possible with every other physical medium. Under the AT&T's SONET standard data speeds that could reach over 2.5 Gbps are common, whereas the maximum limit to get a copper cable (without compression) is 16 Mbps. The attainable limit of fiber optic transmission is 2 trillion bits per second, enough to handle amount of data handled by all US telecommunication companies assembled. Fiber-optic uses less energy, is immune to static (electromagnetic interference), and is almost entirely secure from tempering or wire tapping.
Development and Application
Optical fiber communication technology applications keeps growing fast, since 1977 considering that the first commercial installing fiber optic system, telephone companies start using optical fiber link, replacing the existing system of copper wire. Today lots of the telephone company, in their system comprehensively USES optical fiber since the main structure so when a city of cross country outcomes of the phone system. Providers have begun to use/copper fiber axis hybrid circuit experiment. Enable the hybrid lines in neuro-scientific integration between optical fiber and coaxial cable, this is known as the positioning of the node, the offer will be the light from the light pulse is converted to electrical signal receiver, and then signal is transmitted by way of a coaxial cable to each family. As an appropriate method of communication signal transmission, optical fiber steadily instead of copper wire is obvious, the fiber optic cable across long distances between local phone systems in addition to many network system to supply the key line connection.
Optical fiber is a type of with glass since the waveguide, by means of light to transfer information in one end to the other side of the technology. Today's low loss optical fiber in accordance with early progression of transmission medium, almost without being tied to the bandwidth and has an original advantage, point-to-point optical transmission system consists of three basic parts: produce optical transmitter, optical signal to carry light signal cable and optical receiver receive light signals.
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Source:Development and Application Of Fiber Optic Transmission
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