The main difference between CWDM (Coarse Wavelength Division Multiplexing) and DWDM (Dense Wavelength Division Multiplexing) is in channel spacing. CWDM uses wider spacing (typically 20 nm), allowing
DWDM stands for Dense Wavelength Division Multiplexing. It is a technology used in fiber-optic networks to increase bandwidth by combining and transmitting multiple data signals simultaneously over th