Title :
1480-nm pumped erbium-doped fiber amplifiers with optimized noise performance for AM-VSB distribution systems
Author :
Clesca, B. ; Bousselet, P. ; Augé, J. ; Blondel, J.-P. ; Février, H.
Author_Institution :
Alcatel Alsthom Recherche, Marcoussis, France
Abstract :
Within analog video transmission systems, optical amplifiers have to display simultaneously good noise and output power performance because of the very stringent carrier-to-noise ratio requirements imposed by the AM-VSB modulation format. We show, theoretically and experimentally, that properly designed forward 1480-nm pumped erbium-doped fiber amplifiers can deliver +16 dBm saturated output power with noise parameter (n/sub sp//C/sub x/) as low as 3.5dB. These amplifiers do not exhibit significant degradation of their noise performance when the input powers are as large as +3 dBm. These characteristics make 1480-nm pumped amplifiers suitable for AM-VSB transmission systems.<>
Keywords :
amplitude modulation; erbium; fibre lasers; laser noise; optical fibre communication; optical modulation; optical pumping; optical saturation; optimisation; television networks; 1480 nm; AM-VSB distribution systems; AM-VSB modulation format; AM-VSB transmission systems; analog video transmission systems; erbium-doped fiber amplifiers; good noise; optimized noise performance; output power performance; saturated output power; stringent carrier-to-noise ratio requirements; Erbium-doped fiber amplifier; Optical amplifiers; Optical modulation; Optical noise; Optical pumping; Optical saturation; Power amplifiers; Power generation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
