Communications Systems Glossary

Wavelength.  The wavelength is the distance between peaks (or troughs) of a sinusoidal waveform.

Wavelength division multiplexing (WDM).  Wavelength division multiplexing (WDM) is the sharing of an optical fibre channel by providing multiple channels, each of which modulates a laser of different wavelength.

Wide area network (WAN).  A wide area network (WAN) is an internetwork.

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