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DFB laser with nonuniform coupling coefficient realized by double-layer buried grating
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
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1993 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 5, 1128-1131 p.Article in journal (Refereed) Published
Abstract [en]

A technique for the realization of a nonuniform grating coupling coefficient kappa , and its implementation in distributed-feedback (DFB) lasers is presented. This technique, which is an extension of the buried-grating concept, offers precise control of the coupling coefficient and enables a kappa -ratio greater than 10. DFB lasers with an asymmetric kappa -variation have been fabricated using this method. A front-to-rear facet output power ratio close to five was obtained, qualitatively in agreement with simulations.<>

Place, publisher, year, edition, pages
1993. Vol. 5, 1128-1131 p.
Keyword [en]
DFB laser;asymmetric kappa variation;distributed-feedback;double-layer buried grating;front-to-rear facet output power ratio;grating coupling coefficient;laser diodes;nonuniform coupling coefficient;diffraction gratings;distributed feedback lasers;optical couplers;semiconductor lasers;
National Category
Telecommunications Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-89281DOI: 10.1109/68.248403OAI: oai:DiVA.org:kth-89281DiVA: diva2:503025
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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