Extending the transmission distance of a directly modulated laser source using Bragg grating dispersion compensators

Author

Mason, P.L. ; Penty, R.V. ; White, I.H.

Author_Institution

Sch. of Phys., Bath Univ., UK

fYear

1995

fDate

34729

Firstpage

42705

Lastpage

42709

Abstract

Comprehensive computer modelling has been used to investigate the dependence of dispersion penalty on transmission length in an optical communications system employing a directly modulated 2.5 Gbit/s DFB laser source and an optimised fibre grating dispersion compensator. Two grating apodization schemes, tanh and Gaussian, have been compared. The 2 dB dispersion penalty transmission distance is shown to be approximately 520 km along standard monomode fibre after compensation with a 5 cm tanh grating. This represents a great improvement over the 150 km range expected for a similar uncompensated system

Keywords

chirp modulation; diffraction gratings; distributed feedback lasers; laser feedback; optical fibre communication; optical fibre dispersion; optical fibre filters; optical modulation; optical transmitters; quantum well lasers; 150 km; 2.5 Gbit/s; 520 km; Bragg grating dispersion compensators; DFB laser source; Gaussian scheme; computer modelling; directly modulated laser source; dispersion penalty; dispersion penalty transmission distance; grating apodization schemes; optical communications system; optimised fibre grating dispersion compensator; standard monomode fibre; tanh grating; tanh scheme; transmission distance; uncompensated system;

fLanguage

English

Publisher

iet

Conference_Titel

Optical Fibre Gratings and Their Applications, IEE Colloquium on

Conference_Location

London

Type

conf

DOI

10.1049/ic:19950091

Filename

478118