Effect of gain compression on the FM nonlinear distortion in semiconductor lasers

Author

Salgado, Henrique M. ; Castro, Jorge C S ; O´Reilly, John J.

Author_Institution

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

Volume

32

Issue

6

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

981

Lastpage

985

Abstract

The FM intermodulation characteristics of directly modulated semiconductor lasers of relevance to the design of subcarrier multiplexed applications are investigated, “Adiabatic” chirp which has previously not been considered is shown to have a large impact on the reduction of the distortion levels at frequencies below half the resonance frequency of the laser. Results are presented showing that, in contrast to previous suggestions, FM modulation may be advantageous, imposing less requirements on laser linearity than IM modulation

Keywords

chirp modulation; distributed feedback lasers; frequency modulation; laser feedback; optical fibre communication; optical modulation; optical pulse compression; optical transmitters; semiconductor lasers; subcarrier multiplexing; FM intermodulation characteristics; FM nonlinear distortion; IM modulation; adiabatic chirp; directly modulated semiconductor lasers; distortion levels; gain compression; laser linearity; resonance frequency; semiconductor lasers; subcarrier multiplexed applications; Chirp modulation; Frequency modulation; Intermodulation distortion; Laser noise; Linearity; Nonlinear distortion; Optical design; Resonance; Resonant frequency; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.502375

Filename

502375