Title :
Impact of dispersion fluctuations on 40-Gb/s dispersion-managed lightwave systems
Author :
Poutrina, Ekaterina ; Agrawal, Govind P.
Author_Institution :
Inst. of Opt., Univ. of Rochester, NY, USA
fDate :
4/1/2003 12:00:00 AM
Abstract :
We study numerically the impact of random dispersion fluctuations on the performance of 40-Gb/s dispersion-managed lightwave systems designed using either the chirped return-to-zero or the soliton format and employing backward-pumped distributed Raman amplification. We consider two-section dispersion maps with β2=±4 and ±8 ps2/km and show that the Q parameter decreases rapidly in both cases as the nonlinear effects become stronger. The impact of dispersion fluctuations can be reduced by lowering the average input power, but the system length is then limited by amplifier noise.
Keywords :
Raman lasers; chirp modulation; laser noise; optical fibre amplifiers; optical fibre communication; optical fibre dispersion; optical solitons; 40 Gbit/s; Q parameter; amplifier noise; average input power; backward-pumped distributed Raman amplification; chirped return-to-zero format; dispersion-managed lightwave systems; nonlinear effects; random dispersion fluctuations; soliton format; system length; two-section dispersion maps; Chirp; Delta modulation; Fluctuations; Nonlinear optics; Optical fiber dispersion; Optical noise; Optical pulses; Optical solitons; Stimulated emission; System performance;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.810101
