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An optical communication system is any form of communications system that uses light as the transmission medium. Equipment consists of a transmitter, which encodes a message into an optical signal, a communication channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal.
The communication skills required for successful communication are different for source and receiver. For the source, this includes the ability to express oneself or to encode the message in an accessible way. [8] Communication starts with a specific purpose and encoding skills are necessary to express this purpose in the form of a message.
Many models of communication include the idea that a sender encodes a message and uses a channel to transmit it to a receiver. Noise may distort the message along the way. The receiver then decodes the message and gives some form of feedback. [1] Models of communication simplify or represent the process of communication.
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 January 2025. Transmission of information For other uses, see Communication (disambiguation). "Communicate" redirects here. For other uses, see Communicate (disambiguation). There are many forms of communication, including human linguistic communication using sounds, sign language, and writing as well ...
The Bluetooth system, for example, uses phase-shift keying to exchange information between various devices. [44] [45] In addition, there are combinations of phase-shift keying and amplitude-shift keying which is called (in the jargon of the field) quadrature amplitude modulation (QAM) that are used in high-capacity digital radio communication ...
[12] [10] Shannon and Weaver hold that models of communication should provide good responses to all three problems, ideally by showing how to make communication more accurate and efficient. [10] The prime focus of their model is the technical level, which concerns the issue of how to accurately reproduce a message from one location to another ...
One-way communication is when a message flows from sender to receiver only, thus providing no feedback. Some examples of one-way communication are radio or television programs and listening to policy statements from top executives. Two-way communication is especially significant in that it enables feedback to improve a situation. [2]
The fourth generation of fiber-optic communication systems used optical amplification to reduce the need for repeaters and wavelength-division multiplexing (WDM) to increase data capacity. The introduction of WDM was the start of optical networking , as WDM became the technology of choice for fiber-optic bandwidth expansion. [ 24 ]