Coarse Wavelength Division Multiplexing (CWDM) will allow various alerts for being transmitted simultaneously more than 1 optical fiber through the use of various wavelengths of light to carry Just about every signal. CWDM operates in the wavelength array of 1270nm to 1610nm, with Every CWDM channel typically separated by 20nm. BiDi CWDM SFP/SFP+