Title :
Noise figure of erbium doped fiber amplifiers in the saturated regime
Author :
Bertilsson, K. ; Andrekson, Peter A. ; Olsson, B.E.
Author_Institution :
Dept. of Optoelectron. & Electr. Meas., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
We have made an experimental and theoretical study of the noise figure of an erbium doped fiber amplifier in the saturated regime. The saturated amplified spontaneous emission at the signal wavelength was measured using a very accurate pulsed source technique. We have quantified the noise figure dependence on compression, in excellent agreement with theory, to be less than 1.5 dB for a gain compression as high as 15 dB when the small signal gain was 26 dB, and the 1.48 μm pump power was 27 mW.
Keywords :
erbium; fibre lasers; laser theory; optical pumping; optical saturation; random noise; superradiance; 1.48 mum; 26 dB; 27 mW; accurate pulsed source technique; erbium doped fiber amplifiers; gain compression; noise figure; pump power; saturated amplified spontaneous emission; saturated regime; signal wavelength; small signal gain; Doped fiber amplifiers; Equations; Erbium; Erbium-doped fiber amplifier; Gratings; Noise figure; Noise measurement; Optical fiber polarization; Spontaneous emission; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
