Optical feedback in vertical-cavity surface-emitting lasers

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 a...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2001-12, Vol.37 (12), p.1643-1649
Main Authors: Hsu, A., Seurin, J.-F.P., Chuang, S.L., Choquette, K.D.
Format: Article
Language:English
Subjects:
Current measurement
Exact sciences and technology
Fiber lasers
Fibers
Fundamental areas of phenomenology (including applications)
Laser feedback
Laser theory
Lasers
Mathematical models
Optical feedback
Optical fiber theory
Optical fibers
Optical surface waves
Optics
Physics
Power measurement
Semiconductor lasers
laser diodes
Spectra
Surface emitting lasers
Threshold currents
Vertical cavity surface emission lasers
Vertical cavity surface emitting lasers
Wavelengths
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Description
Summary: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 /spl times/ 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 /spl alpha/ by analyzing the wavelength variation as a function of fiber position is presented and a value of /spl alpha/ = 2.8 was obtained.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.970912