Coarse Wavelength Division Multiplexing (CWDM)

Coarse Wavelength Division Multiplexing (CWDM) is a technology that allows multiple signals to be transmitted simultaneously over the same optical fiber by using different wavelengths (or colors) of light. It involves fewer channels than its finer counterpart, Dense Wavelength Division Multiplexing (DWDM), meaning it is less complex and more cost-effective. CWDM typically combines up to 18 channels within a wavelength range of 1270 nm to 1330 nm, enabling efficient data transmission for telecommunications and data centers, while maximizing the capacity of existing fiber optic infrastructure without needing extensive upgrades.