Preparation and Characterization of Bragg Fibers for Delivery of Laser Radiation at 1064 nm
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Date
2013-04
Authors
Matejec, Vlastimil
Kasik, Ivan
Podrazky, Ondrej
Aubrecht, Jan
Frank, Milan
Jelinek, Michal
Kubecek, Vaclav
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
Bragg fibers offer new performance for transmission of high laser energies over long distances. In this paper theoretical modeling, preparation and characterization of Bragg fibers for delivery laser radiation at 1064 nm are presented. Investigated Bragg fibers consist of the fiber core with a refractive index equal to that of silica which is surrounded by three pairs of circular layers. Each pair is composed of one layer with a high and one layer with a low refractive index and characterized by a refractive-index difference around 0.03. Propagation constants and radiation losses of the fundamental mode in such a structure were calculated on the basis of waveguide optics. Preforms of the Bragg fibers were prepared by the MCVD method using germanium dioxide, phosphorous pentoxide and fluorine as silica dopants. The fibers with a diameter of 170 m were drawn from the preforms. Refractive-index profiles, angular distributions of the output power and optical losses of the prepared fibers were measured. Results of testing the fibers for delivery radiation of a pulse Nd:YAG laser at 1064 nm are also shown.
Description
Citation
Radioengineering. 2013, vol. 22, č. 1, s. 346-351. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2013/13_01_0346_0351.pdf
http://www.radioeng.cz/fulltexts/2013/13_01_0346_0351.pdf
Document type
Peer-reviewed
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en