Optical feedback in vertical-cavity surface-emitting lasers

Author

Hsu, A. ; Seurin, J.-F.P. ; Chuang, S.L. ; Choquette, K.D.

Author_Institution

Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA

Volume

37

Issue

12

fYear

2001

fDate

12/1/2001 12:00:00 AM

Firstpage

1643

Lastpage

1649

Abstract

Optical feedback in a vertical-cavity surface-emitting laser due to a fiber facet of varying position is studied in experiment and theory. Measured spectra and light-current curves show periodic variations in resonant wavelength, threshold current, differential quantum efficiency, and output power as a function of fiber position. Theoretical results were obtained using a 2 × 2 vector propagation matrix method which models the laser and fiber in a single structure and shows good agreement with experimental results. A novel method for determining the linewidth enhancement factor α by analyzing the wavelength variation as a function of fiber position is presented and a value of α = 2.8 was obtained

Keywords

laser feedback; laser theory; matrix algebra; semiconductor device models; semiconductor lasers; spectral line breadth; surface emitting lasers; vectors; VCSEL; differential quantum efficiency; fiber facet; fiber position; light-current curves; linewidth enhancement factor; optical feedback; output power; propagation matrix method; resonant wavelength; single structure; threshold current; vertical-cavity surface-emitting laser; vertical-cavity surface-emitting lasers; wavelength variation; Current measurement; Fiber lasers; Laser feedback; Laser theory; Optical feedback; Optical fiber theory; Optical surface waves; Power measurement; Surface emitting lasers; Vertical cavity surface emitting lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.970912

Filename

970912