Dense Wave Division Multiplex
(Dense Wavelength Division Multiplexing) A method of transmitting many connections parallel over one fiber optic line. Transmission works over different wavelengths (colors) on the same fiber, which are very close together on DWDM. Because of this, highly precise and temperature stabilized laser transmitters must be used. On the other hand, when using DWDM a distance of several 100 km can be covered. By now, DWDM is available with up to 128 colors.
A method of multiplying the capacity of an optical fiber by simultaneously operating at more than one wavelength.
a device for simultaneously transmitting a set of discrete information channels over a single fiber optic transmission line