CWDM

CWDM (short for Coarse Wavelength Division Multiplexing) is an optical networking technology that increases the bandwidth of existing networks. CWDM is a kind of Wavelength Division Multiplexing – a technology used to expand the capacity of fibre optic networks. It enables multiple data streams to be transmitted over different light wavelengths through a single fibre.

CWDM uses a multiplexer to divide the light wavelengths into different channels, each carrying a separate data stream. The channels are combined and transmitted over a single fibre optic cable. At the receiving end, a demultiplexer separates the wavelengths into the original channels. This allows multiple independent data streams to be transmitted over a single fibre.