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Mux/Demux - Multiplexer and Demultiplexer

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MUX or Multiplexer combines multiple data signals into one signal

DEMUX or Demultiplexer divides a single signal into multiple data signals

Due to the physical properties of light at different wavelengths, multiplexers can be used in dual and single strand network configurations because the data signals cannot collide even if travelling bi-directionally. 

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