X-ray irradiation effects on fluorine-doped germanosilicate optical fibers

Franco Mario Gelardi, Simonpietro Agnello, Antonino Alessi, Diego Di Francesca, Marcandella, Richard, Girard, Di Francesca, Paillet, Boukenter, Ouerdane

Risultato della ricerca: Article

17 Citazioni (Scopus)

Abstract

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.
Lingua originaleEnglish
pagine (da-a)1683-1695
Numero di pagine13
RivistaOptical Materials Express
Volume4
Stato di pubblicazionePublished - 2014

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Fluorine
Optical fibers
Irradiation
Germanium
Radiation
X rays
Paramagnetic resonance
Luminescence
Oxygen
Dosimetry
Photoluminescence
Defects

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cita questo

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

Gelardi, FM, Agnello, S, Alessi, A, Di Francesca, D, Marcandella, Richard, Girard, Di Francesca, Paillet, Boukenter & Ouerdane 2014, 'X-ray irradiation effects on fluorine-doped germanosilicate optical fibers', Optical Materials Express, vol. 4, pagg. 1683-1695.
Gelardi, Franco Mario ; Agnello, Simonpietro ; Alessi, Antonino ; Di Francesca, Diego ; Marcandella ; Richard ; Girard ; Di Francesca ; Paillet ; Boukenter ; Ouerdane. / X-ray irradiation effects on fluorine-doped germanosilicate optical fibers. In: Optical Materials Express. 2014 ; Vol. 4. pagg. 1683-1695.
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abstract = "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.",
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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

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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.

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