DWDM
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DWDM is a more cost-effective alternative to Time Division Multiplexing (TDM). Electrical engineers often use a motorway analogy to explain the difference between the two. TDM relates to traffic flow on one lane of the motorway. To increase the throughput of autos, one can increase their speed, that is equivalent to time multiplexing. DWDM, on the other hand, relates to the number of lanes on the motorway. Another way to increase auto throughput is to add more travel lanes, that is equivalent to wavelength multiplexing.
Also Known As: Dense Wavelength Division Multiplexing
Related Resources:
DWDM Resources
More detailed background information on DWDM and its practical application.
