Title :
Demonstration of an optimal polarization scrambler for long-haul optical amplifier systems
Author :
Bruyère, F. ; Audouin, O. ; Letellier, V. ; Bassier, G. ; Marmier, P.
Author_Institution :
Alcatel Alsthom Recherche, Marcoussis, France
Abstract :
Polarization scrambling of the input signal in a long-haul erbium-doped fiber amplifier (EDFA) system is studied both experimentally and theoretically. Demonstration of an optimal polarization scrambler is achieved ensuring complete suppression of the signal decay caused by polarization dependent gain (PDG) in EDFAs. Best performance of the system is attained without imposing severe requirements on the polarization scrambler in terms of residual degree of polarization. Close agreement between measurements and calculations provides a valuable validation of the assumed linear dependency of the PDG differential gain with the degree of polarization of the light.<>
Keywords :
erbium; fibre lasers; light polarisation; optical communication equipment; optical fibres; optical links; EDFA; PDG differential gain; input signal; linear dependency; long-haul erbium-doped fiber amplifier system; long-haul optical amplifier systems; optimal polarization scrambler; polarization dependent gain; polarization scrambling; residual degree of polarization; signal decay suppression; Erbium-doped fiber amplifier; Optical amplifiers; Optical attenuators; Optical fiber polarization; Optical polarization; Optical saturation; Page description languages; Phase modulation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
