Pure frequency modulation or intensity modulation with suppressed frequency chirp using active Bragg reflector integrated laser

Author

Goobar, Edgard ; Schatz, Roland ; Broberg, B. ; Nilsson, S.

Author_Institution

Dept. of Microwave Eng. & Fibre Opt., R. Inst. of Technol., Stockholm, Sweden

Volume

25

Issue

5

fYear

1989

fDate

3/2/1989 12:00:00 AM

Firstpage

304

Lastpage

305

Abstract

The modulation properties of a laser structure which consists of an active Bragg reflector (300 mu m) integrated with an uncorrugated gain region (600 mu m) have been measured. The laser exhibited a flat FM response and very low spurious intensity modulation when modulating the current in the Bragg reflector. Furthermore, broadband intensity modulation with suppressed frequency chirp could also be achieved. An inhomogeneous linewidth enhancement factor alpha caused by the uneven carrier density distribution between the two sections gives a qualitative explanation to our results.

Keywords

distributed Bragg reflector lasers; frequency modulation; optical modulation; semiconductor junction lasers; 300 micron; 600 micron; active Bragg reflector integrated laser; broadband intensity modulation; flat FM response; inhomogeneous linewidth enhancement factor; intensity modulation; modulation properties; spurious intensity modulation; suppressed frequency chirp; uncorrugated gain region; uneven carrier density distribution;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19890212

Filename

19730