Dense Wave Division Multiplexing (DWDM)

Dense Wave Division Multiplexing (DWDM) systems combine over a 100 wavelengths onto a common fiber within the erbium doped fiber amplifier operational bandwidth of 1530nm to 1565nm. DWDM wavelengths are based on an International Telecommunications Union (ITU) standard channel plan. Since DWDM systems can utilize EDFAs they can span hundreds of kilometers.

The LightGAIN L-040, L-130, EWX-800, and MDX-40A family of DWDM systems combine four, eight, 12, and 40 wavelengths, respectively. These systems can be active (with transponders) or passive (accepting DWDM ITU standard wavelengths from other transmitters).