In the presence of pump absorption, soliton amplification with erbium-doped fibers is no longer reciprocal with respect to the interchange between the relative direction of propagation of signal and pump. We present a numerical analysis of the influence of pump absorption on the temporal and spectral characteristics and on the energy amplification factor of picosecond and femtosecond signals.
© 1992 Optical Society of America
M. Romagnoli, F. S. Locati, F. Matera, M. Settembre, M. Tamburrini, and S. Wabnitz, "Nonlinear nonreciprocity of soliton amplification with erbium-doped fibers," Opt. Lett. 17, 1456-1458 (1992)