Title :
Photodarkening in optical fibres: Comparative study of photo-induced defects using different photon sources
Author :
Milanese, Daniel ; Chiesa, Marco ; Taccheo, Stefano ; Mattson, K. ; Gebavi, Hrvoje ; Robin, T. ; Lablonde, L. ; Mechin, D. ; Monteville, Achille ; Freyria, F. ; Bonelli, B.
Author_Institution :
DISAT, Politec. di Torino, Turin, Italy
Abstract :
In this paper, recent investigation on Ce-doped fibres is presented and for the first time, parallel irradiation with high intensity photons in the NIR, UV, X-Ray and gamma ray wavelength regions was performed in order to study the materials structure and its relationship with photodarkening. A set of preform core samples are prepared with appropriate Al/Yb and Yb/Ce concentrations. The obtained defects are identified by UV-VIS spectroscopy, fluorescence spectroscopy and electron paramagnetic resonance (EPR) spectroscopy.
Keywords :
X-ray effects; aluminium; cerium; fluorescence; gamma-ray effects; optical fibres; paramagnetic resonance; photochromism; ultraviolet radiation effects; ultraviolet spectra; visible spectra; ytterbium; EPR; NIR wavelength; UV wavelength; UV-VIS spectroscopy; X-Ray wavelength; electron paramagnetic resonance spectroscopy; fluorescence spectroscopy; gamma ray wavelength; high intensity photons; materials structure; optical fibres; photo-induced defects; photodarkening; photon sources; Educational institutions; Fiber lasers; Optical fibers; Photochromism; Power lasers; Radiation effects;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6801001
