Design rules for a low-chirp integrated DFB laser with an electroabsorption modulator

Author

Lestra, Alexis ; Brosson, Philippe

Author_Institution

Div. of Optoelectron. Components, Alcatel Corp. Res. Centre, Marcoussis, France

Volume

8

Issue

8

fYear

1996

Firstpage

998

Lastpage

1000

Abstract

Feedback from the front facet of an integrated DFB laser with an electroabsorption modulator generates additional chirp to the single modulator. The reduction of the sensitivity to that feedback is in tradeoff relation with the external differential quantum efficiency and the single-mode yield. We introduce a figure-of-merit for the feedback sensitivity. It is obtained from the modeling of the small signal frequency modulation (FM). It indicates design rules for low-chirp and high-efficiency devices.

Keywords

chirp modulation; distributed feedback lasers; electro-optical modulation; electroabsorption; frequency modulation; integrated optics; laser feedback; laser modes; semiconductor lasers; sensitivity; design rules; electroabsorption modulator; external differential quantum efficiency; feedback; figure-of-merit; front facet; high-efficiency devices; low-chirp devices; low-chirp integrated DFB laser; sensitivity; single modulator; single-mode yield; small signal frequency modulation; Chirp modulation; Frequency modulation; Integrated optics; Laser feedback; Laser modes; Optical design; Optical devices; Optical feedback; Optical modulation; Phase modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.508716

Filename

508716