The effects of pedestal suppression on gain-switched laser sources for 40 Gbit/s OTDM transmission

Author

Mason, P.L. ; Wonfor, A. ; Marcenac, D.D. ; Moodie, D.G. ; Brierley, M.C. ; Penty, R.V. ; White, I.H. ; Bouchoule, S.

Author_Institution

Centre for Commun. Res., Bristol Univ., UK

Volume

1

fYear

1997

fDate

10-13 Nov 1997

Firstpage

289

Abstract

The MQW DFB grating semiconductor laser (GSL)+ dispersion compensated fibre (DCF) source taken alone exhibits a relatively poor extinction ratio (-20dB) which impairs its potential for use in a 40 Gbit/s optical time domain multiplexing (OTDM) system. However, with the addition of an electroabsorption modulator to suppress the pulse pedestals to better than 30 dB extinction, coherent interference noise is much reduced and the BER performance is greatly improved. This enhanced source shows good potential for 40 Gbit/s OTDM communication

Keywords

compensation; distributed feedback lasers; electro-optical modulation; electroabsorption; laser noise; optical communication equipment; optical fibre dispersion; quantum well lasers; time division multiplexing; 40 Gbit/s; BER performance; Gbit/s OTDM communication; Gbit/s OTDM transmission; Gbit/s optical time domain multiplexing; MQW DFB grating semiconductor laser; dB extinction; dispersion compensated fibre source; electroabsorption modulator; gain-switched laser sources; pedestal suppression; poor extinction ratio; pulse pedestals; Extinction ratio; Fiber gratings; Fiber lasers; Interference suppression; Optical modulation; Optical noise; Optical pulses; Pulse modulation; Quantum well devices; Semiconductor lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society Annual Meeting, 1997. LEOS '97 10th Annual Meeting. Conference Proceedings., IEEE

Conference_Location

San Francisco, CA

ISSN

1092-8081

Print_ISBN

0-7803-3895-2

Type

conf

DOI

10.1109/LEOS.1997.630629

Filename

630629