Dynamics of Spectral Hole Burning in EDFAs: Dependence on Temperature

The dependence of the dynamical response of spectral hole burning (SHB) of an erbium-doped fiber amplifier (EDFA) on temperature is investigated. Experimental results show that gain variations decrease with increasing temperature. The dependence of the transition time on temperature is weak with a trend to larger values at higher temperatures. We also observe that EDFAs using two or three energy levels of the erbium ions show a similar behavior with respect to temperature variation. However, the three-level EDFA presents a higher dependence of the magnitude of induced gain variations on temperature.