Optical Multiplexing
Wavelength-division MultiplexingCWDM and DWDM MultiplexingChannel Spacing Versus Laser PerformanceDifferences Between CWDM and DWDM MultiplexingThe channel spacing between wavelengths determines the type of multiplexing. The narrower the channel spacing, the more signals that can be combined in a single fiber. A channel spacing of 20 nm is known as Coarse Wavelength-Division Multiplexing (CWDM). A channel spacing of 0.4 or 0.8 nm allows many more signals to be combined in the same opticalSee more on vialite MEETOPTICS
Wavelength Division Multiplexers (WDM) - MEETOPTICS
This allows multiple channels of data to be transmitted simultaneously over a common fiber without interference. Furthermore, by using different wavelengths for each channel, WDM effectively