Performance Assessment of L-Band High-Concentration EDFA Using Power Masks

Erbium-doped fiber amplifiers performance, especially designed with high doping concentration to operate at the optical L-band, were experimentally characterized in terms of gain, ripple, and noise figure power masks as a function of both pump power and signal input power. The results indicate the possibility of achieving an optical gain of around 15 dB with a nearly equalized output, using doped fibers with only 25 m of length.