Dispersion tolerance of coherent WDM

Author

Gunning, Fatima C Garcia ; Healy, Tadhg ; Ellis, Andrew D.

Author_Institution

Photonic Syst. Group, Tyndall Nat. Inst., Cork

Volume

18

Issue

12

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

1338

Lastpage

1340

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);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.876995

Filename

1638502