Abstract
| Lingua originale | English |
|---|---|
| pagine (da-a) | 1683-1695 |
| Numero di pagine | 13 |
| Rivista | Optical Materials Express |
| Volume | 4 |
| Stato di pubblicazione | Published - 2014 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
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X-ray irradiation effects on fluorine-doped germanosilicate optical fibers. / Gelardi, Franco Mario; Agnello, Simonpietro; Alessi, Antonino; Di Francesca, Diego; Marcandella; Richard; Girard; Di Francesca; Paillet; Boukenter; Ouerdane.
In: Optical Materials Express, Vol. 4, 2014, pag. 1683-1695.Risultato della ricerca: Article
}
TY - JOUR
T1 - X-ray irradiation effects on fluorine-doped germanosilicate optical fibers
AU - Gelardi, Franco Mario
AU - Agnello, Simonpietro
AU - Alessi, Antonino
AU - Di Francesca, Diego
AU - Marcandella, null
AU - Richard, null
AU - Girard, null
AU - Di Francesca, null
AU - Paillet, null
AU - Boukenter, null
AU - Ouerdane, null
PY - 2014
Y1 - 2014
N2 - We report an experimental investigation on the effects of fluorine codoping on the radiation response of Ge-doped Optical Fibers (OFs) obtained by three different drawing conditions. The OFs were irradiated with 10 keV X-rays up to 300 Mrad and studied by online Radiation-Induced-Attenuation (RIA) measurements. Confocal Micro- Luminescence (CML) and Electron Paramagnetic Resonance (EPR) were also employed to investigate the permanent radiation-induced-defects. The variation of the Germanium-Lone-Pair-Center (GLPC) and Non-Bridging- Oxygen-Hole-Centers (NBOHC) concentration with the radiation dose is investigated by CML, whereas the ones of the induced Ge(1), Ge(2) and Eʹ centers by EPR. No relevant differences are found in the RIA of the three fibers, as well as in the induced concentrations of Ge(1) and Ge(2) and in the decrease of the GLPC, showing minor relevance of changing the drawing conditions. We found that fluorine codoping does not affect the RIA and that, unexpectedly, the fluorine co-doped zones of the OFs show an enhanced photoluminescence of the radiation induced NBOHC enabling to suggest the presence of both Si and Ge variants. Moreover, an overall increase of the radiation induced Eʹ(Ge) centers is registered in relation to the presence of fluorine showing that this codopant has relevant effects.
AB - We report an experimental investigation on the effects of fluorine codoping on the radiation response of Ge-doped Optical Fibers (OFs) obtained by three different drawing conditions. The OFs were irradiated with 10 keV X-rays up to 300 Mrad and studied by online Radiation-Induced-Attenuation (RIA) measurements. Confocal Micro- Luminescence (CML) and Electron Paramagnetic Resonance (EPR) were also employed to investigate the permanent radiation-induced-defects. The variation of the Germanium-Lone-Pair-Center (GLPC) and Non-Bridging- Oxygen-Hole-Centers (NBOHC) concentration with the radiation dose is investigated by CML, whereas the ones of the induced Ge(1), Ge(2) and Eʹ centers by EPR. No relevant differences are found in the RIA of the three fibers, as well as in the induced concentrations of Ge(1) and Ge(2) and in the decrease of the GLPC, showing minor relevance of changing the drawing conditions. We found that fluorine codoping does not affect the RIA and that, unexpectedly, the fluorine co-doped zones of the OFs show an enhanced photoluminescence of the radiation induced NBOHC enabling to suggest the presence of both Si and Ge variants. Moreover, an overall increase of the radiation induced Eʹ(Ge) centers is registered in relation to the presence of fluorine showing that this codopant has relevant effects.
UR - http://hdl.handle.net/10447/95661
M3 - Article
VL - 4
SP - 1683
EP - 1695
JO - Optical Materials Express
JF - Optical Materials Express
SN - 2159-3930
ER -