CWDM
Wavelength Division Multiplexers or Demultiplexers (WDM) combine or separate optical signals with
different wavelengths. They are passive optical components for uni- or bidirectional operation.
CWDM are multiplexer and/or demultiplexer which are used to combine or separate signals with a center
wavelength spacing of 20nm. By using up to 18 separate transmission channels CWDMs support the
cost-efficient multiplication of the transmission capacity over an optical fiber.