Reduction of second- and third-order harmonic distortion by nonlinear absorption in gain-coupled DFB lasers

Author

Futakuchi, N. ; Taguchi, T. ; Nakano, Y.

Author_Institution

Dept. of Electron. Eng., Tokyo Univ., Japan

fYear

1998

fDate

4-8 Oct. 1998

Firstpage

161

Lastpage

162

Abstract

The analog modulation distortion due to nonlinear gain compression has been found to be reduced significantly in the gain-coupled (GC) DFB laser of absorptive grating type. It is because the gain compression is compensated by the loss compression in the grating. In order to investigate whether this effect really exists or not, we here analyzed second and third harmonic distortions (2HD and 3HD) in GC DFB LDs of absorptive grating type numerically, taking the dynamic nature of the absorptive grating into consideration.

Keywords

compensation; diffraction gratings; distributed feedback lasers; harmonic distortion; laser theory; light absorption; nonlinear optics; optical losses; semiconductor device models; semiconductor lasers; absorptive grating; absorptive grating type; analog modulation distortion; dynamic nature; gain compression; gain-coupled DFB lasers; loss compression; nonlinear absorption; nonlinear gain compression; second harmonic distortions; second-order harmonic distortion; third harmonic distortions; third-order harmonic distortion; Absorption; Charge carrier density; Distributed feedback devices; Equations; Gratings; Harmonic distortion; Laser noise; Nonlinear optics; Optical distortion; Optical losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Laser Conference, 1998. ISLC 1998 NARA. 1998 IEEE 16th International

Conference_Location

Nara, Japan

ISSN

0899-9406

Print_ISBN

0-7803-4223-2

Type

conf

DOI

10.1109/ISLC.1998.734186

Filename

734186