Electronic Pre-Compensation for a 10.7-Gb/s System Employing a Directly Modulated Laser

Author

Karar, Abdullah S. ; Cartledge, John C. ; Harley, James ; Roberts, Kim

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, ON, Canada

Volume

29

Issue

13

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

2069

Lastpage

2076

Abstract

We investigate electronic pre-compensation for a 10.7-Gb/s system employing a directly modulated laser (DML). Initially, the nonlinear distortion resulting from the direct modulation of the laser is mitigated by pre-compensation based on reversal of the large signal rate equations and the use of digital signal processing to generate an appropriate modulating current. This concept is then utilized in a novel look-up table optimization scheme for electronic dispersion pre-compensation. Simulation results show pre-compensation of up to 350 km of single mode fiber at a required optical signal to noise ratio <; 16 dB for a bit error rate of 10^-3 . It is shown that a 42.8 GSa/s digital to analog converter is sufficient for exploiting the full potential for electronic pre-compensation using a DML.

Keywords

digital-analogue conversion; error statistics; optical distortion; optical fibre dispersion; optical fibre networks; optical information processing; optical links; optical modulation; optical transmitters; optimisation; semiconductor lasers; signal processing equipment; bit rate 10.7 Gbit/s; bit-error-rate; digital signal processing; digital-analog converter; directly modulated laser; electronic precompensation; look-up table optimization; nonlinear distortion; optical link; optical signal-to-noise ratio; optical transmitter; semiconductor lasers; signal rate equations; single mode fiber; Digital signal processing; Nonlinear optics; Optical distortion; Optical noise; Optical receivers; Optical signal processing; Optical transmitters; Directly modulated laser; digital signal processing; digital to analog converter; electronic dispersion compensation; look-up table; metro-optical links;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2153179

Filename

5765644