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Evaluation of an automatic method to extract the grating coupling coefficient in different types of fabricated DFB lasers
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1998 (English)In: IEEE Journal of Quantum Electronics, ISSN 0018-9197, E-ISSN 1558-1713, Vol. 34, 141-146 p.Article in journal (Refereed) Published
Abstract [en]

Distributed feedback (DFB) laser parameters such as grating coupling coefficient, effective indices, facet reflectances, and the phases of facet reflectances have been determined using a method based on least-square fitting of theoretical spectra to measured, subthreshold DFB laser emission spectra. The only inputs needed are geometrical parameters such as length, grating period, and internal grating phase shifts. A larger number of devices have been successfully characterized, and consistent results have been obtained in both 1.3- mu;m multi-quantum-well (MQW) DFB lasers with both facets as-cleaved, and in 1.55- mu;m MQW DFB lasers with no, one, or two facets as-cleaved

Place, publisher, year, edition, pages
1998. Vol. 34, 141-146 p.
Keyword [en]
1.3 mum;1.55 mum;MQW DFB lasers;as-cleaved;automatic method;distributed feedback laser parameters;effective indices;fabricated DFB lasers;facet reflectance phases;facet reflectances;geometrical parameters;grating coupling coefficient;grating period;internal grating phase shifts;least-square fitting;multi-quantum-well DFB lasers;subthreshold DFB laser emission spectra;theoretical spectra;diffraction gratings;distributed feedback lasers;infrared spectra;laser transitions;laser variables measurement;least squares approximations;optical couplers;optical testing;parameter estimation;quantum well lasers;reflectivity;semiconductor device testing;spontaneous emission;
National Category
Telecommunications Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-89296DOI: 10.1109/3.655017OAI: oai:DiVA.org:kth-89296DiVA: diva2:502994
Note
NR 20140805Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2017-12-07Bibliographically approved

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Schatz, Richard

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