Hi am Mohamed i would like to get details on optical communication and networking book by gayathri pdf ..My friend said optical communication and networking book by gayathri pdf will be available here and now i am living at Chennai and i last studied in the college/school Magna College of Engineering and now am doing my Master Course so i need help
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Optical communication, also known as optical telecommunication, is remote communication using light to convey information. It can be done visually or by electronic devices. The first basic forms of optical communication date back several millennia, while the first electrical device created to do so was the photo-phone, 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 beacon light) or complex (such as lights using color codes or 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. This article provides a basic introduction to the different forms of optical communication.