 Erbium-doped waveguide amplifier

An Erbium-doped waveguide amplifier (EDWA) is a type of optical amplifier that uses erbium ions (Er³⁺) as the gain medium to amplify light signals in optical communication systems. These amplifiers are particularly effective in the 1530 to 1570 nanometer wavelength range, which corresponds to the dense wavelength division multiplexing (DWDM) bands used in fiber-optic communications.