Title :
Enhancement of amplifier spacing in long-haul optical links through the use of large-effective-area transmission fiber
Author :
Audouin, O. ; Hamaide, J.-P.
Author_Institution :
Unite Fibre et Syst. Photoniques, Alcatel Alsthom Recherche, Marcoussis, France
Abstract :
The use of large effective area (LEA) dispersion-shifted fibers is investigated for enhancing the amplifier spacing in long-haul optical links. Our analysis leads to the definition of a novel figure of merit for amplified links, which is valid for both soliton and NRZ systems. It is shown that exploiting fibers with effective areas between 70 and 90 μm2 enables a dramatic increase of the amplifier spacing (i.e., in excess of 100%) by comparison to systems using classical 50-μm2 fibers, The maximum attenuation that can be tolerated for LEA fibers is also determined as a function of the effective area.
Keywords :
fibre lasers; optical fibre communication; optical fibre dispersion; optical noise; optical solitons; NRZ systems; amplified links; amplifier spacing; dispersion-shifted fibers; figure of merit; large-effective-area transmission fiber; long-haul optical links; maximum attenuation; soliton systems; Chromatic dispersion; Optical amplifiers; Optical attenuators; Optical fiber amplifiers; Optical fiber communication; Optical noise; Optical signal processing; Power amplifiers; Semiconductor optical amplifiers; Solitons;
Journal_Title :
Photonics Technology Letters, IEEE
