DWDM 

Dense Wavelength Divisonal Multiplexing

DWDM is the techonology used in optical amplifiers, such as EDFA

DWDM by Masteradam September 25, 2006

DWDM 

Dense wavelength division multiplexing (Wikipedia). Basically, a scheme for carrying oodles of channels via optical fibers; one fiber carries many different "colors" (wavelengths) of infrared light, and each "color" is a separate communications channel. See Wikipedia
wavelength division multiplexing for more info., including Coarse WDM.

DWDM -- See the Wikipedia article. Not found in homes, and won't be, for some time, most likely.

DWDM by Hillarion of Sudbury June 7, 2011

DWDM 

fastest modem speed in the world.

some supercomputers have DWDM connection.

DWDM by mike July 6, 2003