Fiber amplifiers can be divided into rare earth ion doped fiber amplifiers (Rare Earth Ion Doped Fiber Amplifier) and nonlinear fiber amplifiers. The working principle of rare earth ion doped fiber…

Fiber amplifiers can be divided into rare earth ion doped fiber amplifiers (Rare Earth Ion Doped Fiber Amplifier) and nonlinear fiber amplifiers. The working principle of rare earth ion doped fiber amplifiers is stimulated radiation; while nonlinear fiber amplifiers use the nonlinear effect of optical fibers to amplify optical signals.