Title :
Dispersion tolerance of coherent WDM
Author :
Gunning, Fatima C Garcia ; Healy, Tadhg ; Ellis, Andrew D.
Author_Institution :
Photonic Syst. Group, Tyndall Nat. Inst., Cork
fDate :
6/1/2006 12:00:00 AM
Abstract :
We present the transmission of a 298.2-Gb/s copolarized coherent wavelength-division-multiplexing system over 80 km of standard single-mode fiber, achieving an information spectral density of 1 b/s/Hz with no prefilters at the transmitter. Odd and even tributary channels were encoded with data and delayed-data-bar pseudorandom binary sequence 27-1 patterns. The dispersion tolerance is investigated, and the dispersion penalty of this system is improved through adjustment of the relative phase of adjacent channels. Under optimum conditions, the dispersion penalty could be reduced from over 3 dB to less than 1 dB
Keywords :
binary sequences; channel coding; light coherence; optical fibre communication; optical fibre dispersion; random sequences; telecommunication channels; wavelength division multiplexing; 298.2 Gbit/s; 80 km; coherent WDM; data encoding; delayed-data-bar pseudorandom binary sequence; dispersion penalty; dispersion tolerance; tributary channels; wavelength-division-multiplexing; Binary sequences; Delay effects; Error correction; Forward error correction; Optical crosstalk; Optical filters; Optical interferometry; Optical receivers; Optical transmitters; Wavelength division multiplexing; Forward error correction (FEC); optical propagation; phase control; wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.876995
