Title :
Burst-Mode Electronic Equalization for 10-Gb/s Passive Optical Networks
Author :
Ossieur, Peter ; Mélange, Cedric ; Ridder, Tine De ; Bauwelinck, Johan ; Baekelandt, Bart ; Qiu, Xing-Zhi ; Vandewege, Jan
Author_Institution :
Dept. of INTEC, Ghent Univ., Ghent
Abstract :
Using computer simulations, it is shown how burst-mode electronic equalization in the optical line termination of a passive optical network (PON) allows 10 Gb/s in the upstream direction with directly modulated distributed-feedback lasers. This allows achieving 10 Gb/s using cost-effective components at the optical network unit. Fast convergence of the equalizer coefficients is achieved during the preamble of each burst using the recursive least squares algorithm instead of the least mean squares algorithm. With a nine-tap feed-forward equalizer, two-tap decision feedback equalizer, a physical reach of 38 km and a splitting factor of 32 can be achieved in the 1.5-mum window, exceeding requirements for deployed PONs.
Keywords :
decision feedback equalisers; distributed feedback lasers; least squares approximations; optical fibre networks; recursive estimation; burst-mode electronic equalization; directly modulated distributed-feedback lasers; equalizer coefficients; nine-tap feed-forward equalizer; optical line termination; passive optical networks; recursive least squares algorithm; two-tap decision feedback equalizer; Burst-mode receivers (Rx´s); dispersion compensation; electronic equalization; optical access networks;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2003417