Title :
An optimization process for Raman-amplified long-span transmission
Author :
Bouteiller, J.-C. ; Bromage, J. ; Thiele, H.-J. ; Nelson, L.E. ; Brar, K. ; Stulz, S.
Author_Institution :
OFS Labs., Somerset, NJ, USA
Abstract :
We propose a decomposition of bidirectionally pumped Raman-amplified long spans into two independent amplifiers. This decomposition leads to a simple optimization process of the transmission. An example of a 10-Gb/s wavelength-division multiplexed system, consisting of 14200-km spans, is described. It presents the optimization of cogain and countergain levels, including constraints from double Rayleigh backscattering and repeaters. We also generalize this procedure to other span lengths.
Keywords :
Raman lasers; optical fibre amplifiers; optical fibre communication; optical repeaters; optimisation; stimulated Raman scattering; wavelength division multiplexing; 10 Gbit/s; 14200 km; bidirectionally pumped Raman amplifier; cogain levels; countergain levels; dispersion compensation; double Rayleigh backscattering; fiber amplifier; long span transmission; optimization process; recirculating loop; repeater spacing; span decomposition; wavelength-division multiplexed system; Backscatter; High power amplifiers; Laboratories; Noise figure; Noise measurement; Optical amplifiers; Optical noise; Repeaters; Signal to noise ratio; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.819402
