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Gamma radiation influence on silica optical fibers measured by optical backscatter reflectometry and Brillouin sensing technique
- We have studied the influence of gamma rays on physical properties of different commercially available silica optical fibers stepwise irradiated up to a total dose of 100 kGy. The detection of radiation-induced changes in silica glass offers the possibility of using selected optical fibers as distributed radiation sensors. The measurements performed by us were based on optical backscatter reflectometry and Brillouin distributed sensing. The measurement methods enable an analysis of radiation-induced modification of the group refractive index and density of the optical fibers. The most distinct physical effect observed by us concerns the increase of the optical attenuation with rising total radiation doses. Quantitative measurement results indicate a crucial impact of fiber dopants on radiation-induced physical and sensory characteristics of silica optical fibers affected by differences in fiber fabrication techniques. Based on the obtained results, the suitability of distributedWe have studied the influence of gamma rays on physical properties of different commercially available silica optical fibers stepwise irradiated up to a total dose of 100 kGy. The detection of radiation-induced changes in silica glass offers the possibility of using selected optical fibers as distributed radiation sensors. The measurements performed by us were based on optical backscatter reflectometry and Brillouin distributed sensing. The measurement methods enable an analysis of radiation-induced modification of the group refractive index and density of the optical fibers. The most distinct physical effect observed by us concerns the increase of the optical attenuation with rising total radiation doses. Quantitative measurement results indicate a crucial impact of fiber dopants on radiation-induced physical and sensory characteristics of silica optical fibers affected by differences in fiber fabrication techniques. Based on the obtained results, the suitability of distributed Brillouin sensing for dosimetry applications seems to be improved by modifying the refractive index profile of the fiber core.…
Autor*innen: | Aleksander Wosniok, D. Sporea, D. Neguţ, Katerina Krebber |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Proceedings of SPIE Vol. 9916 Sixth European Workshop on Optical Fibre Sensors |
Jahr der Erstveröffentlichung: | 2016 |
Verlag: | Spie-Int Soc Optical Engineering |
Verlagsort: | Bellingham, WA, USA |
Jahrgang/Band: | 9916 |
Erste Seite: | Article Number: 99162J |
Freie Schlagwörter: | Backscatter reflectometry; Brillouin frequency shift; Brillouin scattering; Distributed measurement; Gamma radiation; Lonizing radiation; Optical fiber sensor; Radiation dosimetry |
Veranstaltung: | Sixth European Workshop on Optical Fibre Sensors |
Veranstaltungsort: | Limerick, IRL |
Beginndatum der Veranstaltung: | 31.05.2016 |
Enddatum der Veranstaltung: | 03.06.2016 |
DOI: | 10.1117/12.2236678 |
ISSN: | 0277-786X |
ISBN: | 978-1-5106-0219-9 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 08.08.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 08.08.2016 |