Title :
Calculation of the noise figure of erbium-doped fiber amplifiers using small signal attenuations and saturation powers
Author :
Bülow, H. ; Pfieffer, T.
Author_Institution :
Alcatel ISEL AG Res. Centre, Stuttgart, Germany
Abstract :
A theory allowing the noise figure of an erbium-doped fiber amplifier to be computed with a reduced set of fiber parameters is evaluated. The approach is accurate when the amplified spontaneous emission has no significant influence on the gain. Then four parameters, saturation power and absorption coefficient for pump and signal wavelength, are sufficient for 980-nm pumped fiber amplifier. This theory is used to investigate the noise characteristics of a 980-nm pumped booster amplifier within the whole gain spectrum.<>
Keywords :
erbium; fibre lasers; laser theory; noise; optical pumping; optical saturation; superradiance; 980 nm; EDFA; ER-doped fibre amplifiers; IR; absorption coefficient; amplified spontaneous emission; booster amplifier; fiber parameters; laser gain; laser pumping; light absorption; noise characteristics; noise figure; optical constants; pump wavelength; saturation power; saturation powers; signal wavelength; small signal attenuations; whole gain spectrum; Absorption; Attenuation; Erbium; Erbium-doped fiber amplifier; Noise figure; Optical fiber amplifiers; Optical fiber theory; Optical noise; Power amplifiers; Spontaneous emission;
Journal_Title :
Photonics Technology Letters, IEEE
