Coarse wavelength division multiplexing (CWDM) is also known as sparse wavelength division multiplexing or thin wavelength division multiplexing. Dense wavelength division multiplexing (DWDM) has fewer channels, but more channels than standard wavelength division multiplexing ...
CWDM can realize the multiplexing and demultiplexing between two communication channel .It can expand the capacity of single fiber to achieve bidirectional communication, which can widely used in optical network upgrade and expansion, or introduce new comprehensive business ...