02-05-2017, 05:25 AM
Gud buk
..author clearly explained about optical communitaction..it is useful for exams
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optical communication by murali babu pdf free download
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Gud buk
..author clearly explained about optical communitaction..it is useful for exams
02-05-2017, 12:07 PM
Optical communication, also known as optical telecommunication, is the remote communication using light to convey information. It can be done visually or by electronic devices. The first basic forms of optical communication go back several millennia, while the first electrical device created to do so was the photophone, invented in 1880.
An optical communication system uses a transmitter encoding a message in an optical signal, a channel that carries the signal to its destination and a receiver that reproduces the message from the received optical signal. When electronic equipment is not used, the "receiver" is a person who visually observes and interprets a signal, which may be simple (such as the presence of a light beacon) or complex (such as lights using color codes or showing A Morse code sequence).
Optical communication in free space has been deployed in space, while terrestrial forms are naturally limited by geography, climate and the availability of light. Optical communication is any type of communication in which light is used to carry the signal to the remote end, rather than electric current. Optical communication is based on optical fibers to transport signals to their destinations. A modulator / demodulator, a transmitter / receiver, a light signal and a transparent channel are the building blocks of the optical communications system.
Due to its numerous advantages over electrical transmission, fiber optics have largely replaced copper wire communications in the core networks in the developed world.
An optical communication system uses a transmitter encoding a message in an optical signal, a channel that carries the signal to its destination and a receiver that reproduces the message from the received optical signal. When electronic equipment is not used, the "receiver" is a person who visually observes and interprets a signal, which may be simple (such as the presence of a light beacon) or complex (such as lights using color codes or showing A Morse code sequence).
Optical communication in free space has been deployed in space, while terrestrial forms are naturally limited by geography, climate and the availability of light. Optical communication is any type of communication in which light is used to carry the signal to the remote end, rather than electric current. Optical communication is based on optical fibers to transport signals to their destinations. A modulator / demodulator, a transmitter / receiver, a light signal and a transparent channel are the building blocks of the optical communications system.
Due to its numerous advantages over electrical transmission, fiber optics have largely replaced copper wire communications in the core networks in the developed world.
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