Temporal modeling of Erbium doped fiber amplifiers
Date of Original Version
Using a temporal model we have shown the effect of pulse amplification of sub-micro second pulses in an Erbium doped fiber amplifier (EDFA). We have considered the effect of amplification of rectangular and triangular pulses of different powers. The amplification of large signal pulses causes distortion of the pulses because the leading edge of the pulse has larger gain as compared to the rest of the pulse. It has also been shown that the population at the pump state is negligible for typical signal and pump powers. The amount of energy that can be extracted from the EDFA can be increased by increasing the input pulse energy. Increasing the power of the input signal pulse also results in an increase in the peak output signal power and a decrease in the pulse width. There exists an optimum length for pulsed EDFA which is the same as that of small signal EDFA. The energy of the pulse increases until the optimum length is reached after which it starts to decrease. The pulse width of the output signal increases beyond the optimum length.
Proceedings of SPIE - The International Society for Optical Engineering
Sridhar, Balakrishnan, Steven P. Bastien, and Harish R. Sunak. "Temporal modeling of Erbium doped fiber amplifiers." Proceedings of SPIE - The International Society for Optical Engineering 1789, (1993): 155-163. doi:10.1117/12.141125.