What Does Dense Wavelength Division Multiplexing (DWDM) Mean?
Dense wavelength division multiplexing (DWDM) is wavelength division multiplexing (WDM) with typical channel spacing of 100 GHz for 40 channels and 50 GHz for 80 channels. Each channel contains a TDM (time division multiplex) signal. And each of up to 80 channels can carry 2.5 Gbps for a total of 200 billion bits per second by the optical fiber. These signals use the 3rd transmission window, called the C-Band, meaning the light beam wavelengths are between 1530nm to 1565nm. (nm = a nanometers or a billionth of a meter)
Techopedia Explains Dense Wavelength Division Multiplexing (DWDM)
A basic Dense Wavelength Division Multiplexing contains five main components:
