Erbium-doped fiber amplifier: a brief review

Анотація

Optical amplifiers known as erbium-doped fiber amplifiers use doped optical fiber as a gain medium. Fiber lasers are connected to them. Through interaction with the doping ions, a signal is amplified after being multiplexed into the doped fiber along with a pump laser. One of the main draws of erbium-doped fiber amplifiers is their wide gain bandwidth, which is usually tens of nanometers. This is more than enough to amplify data channels with the highest data rates without causing any gain narrowing effects. The technique known as wavelength division multiplexing allows for the simultaneous amplification of numerous data channels at various wavelengths within the gain region using a single erbium-doped fiber amplifier. The paper underscores the importance of understanding and harnessing the principles of such amplification in various dynamic optical landscapes.