Dense Wavelength Division Multiplexer

A Dense Wavelength Division Multiplexer (DWDM) is a device used in fiber optic communications to increase data capacity. It combines multiple light signals, each at slightly different colors or wavelengths, into a single fiber. This allows many data streams to travel simultaneously over the same wire, greatly boosting transmission efficiency without needing more fibers. On the receiving end, a similar device separates these signals for individual processing. DWDM is essential in high-speed networks like internet backbones, enabling large volumes of data to be transmitted quickly and reliably over long distances.