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Optical Multiplexer

In telecommunications and computer networks, multiplexing (known as Muxing) is a term used to refer to a process where multiple analog message signals or digital data streams are combined into one signal over a shared medium. The ais is to share an expensive resource. For Example, in telecommunications, several phone calls may be transferred using one wire.

The multiplexed signal is transferred over a communication channel, which may be a physical transmission medium. The multiplexing divides the capacity of the low-level communication channel into several higher-level logical channels, one for each message signal or data stream to be transferred, A reverse process, known as demultiplexing, can extract the original channels on the receiver side.

A device that performs the multiplexing is called multiplexer (MUX), and a device that performs the reverse process is called demultiplexer (DEMUX). Inverse multiplexing (IMUX) has the opposite aim as multiplexing, namely to break one data stream into several streams, transfer them simultaneously over several communication channels, and recreate the original data stream.

The main application areas are Telegraphy, Telephony, Video Processing, Digital Broadcasting, Anaog Broadcasting etc.