Title :
Quantitative study of the performance statistics of a WDM system with different channel spacings
Author :
Wen, Jiping ; Griggio, P. ; Yan, Li ; Carter, Gary M.
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Univ. of Maryland Baltimore County, MD, USA
fDate :
6/1/2005 12:00:00 AM
Abstract :
We investigate experimentally and theoretically the statistics of optical signal-to-noise ratio (OSNR) and Q-factor after 1800 km of propagation with three channel spacings in a typical terrestrial wavelength-division-multiplexing (WDM) system with a fixed loop polarization-dependent loss (PDL) level of 0.75 dB. Comparisons between measured and simulated results show that fiber drift contributes significantly to the OSNR and Q fluctuations, and decreasing channel spacing reduces the PDL-induced performance fluctuations, but increases the interchannel crosstalk-induced performance fluctuations, especially at the 50-GHz channel spacing. The combination of these factors leads to comparable performance statistics with these channel spacings.
Keywords :
Q-factor; channel spacing; nonlinear optics; optical crosstalk; optical fibre communication; optical fibre losses; optical fibre polarisation; optical noise; wavelength division multiplexing; 0.75 dB; 1800 km; 50 GHz; Q-factor; WDM; channel spacings; fixed loop polarization-dependent loss; interchannel crosstalk; optical signal-to-noise ratio; terrestrial wavelength-division-multiplexing; Channel spacing; Fluctuations; Optical fiber polarization; Optical losses; Optical noise; Optical propagation; Q factor; Signal to noise ratio; Statistics; Wavelength division multiplexing; Nonlinearities; optical crosstalk; optical fiber communication; optical fiber polarization; wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.846573
