Title :
Noise in Orthogonally Pumped Fiber-Optical Parametric Amplifiers
Author :
Kylemark, Per ; Ren, Jian ; Radic, Stojan ; McKinstrie, C.J. ; Karlsson, Magnus ; Andrekson, Peter A.
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg
Abstract :
The noise figure (NF) of a fiber-optical parametric amplifier, driven by pumps with orthogonal polarizations, is quantified experimentally. It is shown that this amplifier has a signal-polarization-dependent gain, with a corresponding polarization-dependent NF. The polarization dependence of the NF is particularly large when higher input-signal powers are amplified, in which case pump-induced noise dominates. At lower input-signal powers, the NF is less dependent on the input polarization, but increases closer to the lower-frequency pump
Keywords :
laser noise; optical fibre amplifiers; optical fibre polarisation; optical parametric amplifiers; optical pumping; fiber-optical parametric amplifiers; lower-frequency pump; noise figure; orthogonal polarizations; orthogonal pumping; pump-induced noise; signal-polarization-dependent gain; Birefringence; Fiber nonlinear optics; Noise figure; Noise measurement; Optical amplifiers; Optical fiber amplifiers; Optical fiber polarization; Optical noise; Semiconductor optical amplifiers; Stimulated emission; Four-wave mixing (FWM); modulation interaction (MI); noise figure (NF); parametric amplification; phase conjugation (PC);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.889033
