Cancellation of third-order intermodulation distortion in a directly modulated DFB laser and optical discriminator

Author

Castro, J.C.S. ; Salgado, H.M. ; O´Reilly, J.J. ; Todd, C.J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK

Volume

2

fYear

1995

fDate

30 Oct-2 Nov 1995

Firstpage

365

Abstract

In this paper an improved model is used, based on the theory of Volterra kernels, that includes the effect of the laser´s intrinsic distortion. Illustrative results are given that show that it is possible to achieve a significant reduction of a third-order intermodulation product (IMP). Moreover, the laser´s intrinsic FM distortion is found to be essential for the accurate modelling of the system´s IMD3 performance. As a result of this cancellation the intermodulation performance of the system can be better, than for a IM modulated laser without discriminator

Keywords

Volterra equations; distributed feedback lasers; electro-optical modulation; frequency modulation; intermodulation distortion; laser theory; optical noise; semiconductor device models; semiconductor lasers; IM modulated laser; IMD3 performance; Volterra kernels; directly modulated DFB laser; intermodulation performance; intrinsic FM distortion; intrinsic distortion; optical discriminator; third-order intermodulation distortion cancellation; third-order intermodulation product; Frequency modulation; Intermodulation distortion; Laser modes; Laser noise; Laser theory; Nonlinear distortion; Nonlinear optics; Optical distortion; Optical modulation; Power lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society Annual Meeting, 1995. 8th Annual Meeting Conference Proceedings, Volume 1., IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-2450-1

Type

conf

DOI

10.1109/LEOS.1995.484754

Filename

484754