X-ray irradiation influence on prototype Er3+-optical fibers: confocal luminescence study

2010 ◽  
Author(s):  
M. Vivona ◽  
S. Girard ◽  
C. Marcandella ◽  
T. Robin ◽  
B. Cadier ◽  
...  
Keyword(s):  
Optical Fibers ◽  
X Ray ◽  
Luminescence Study

10 keV x-ray radiation effects on Yb- and Er/Yb-doped optical fibers: a micro-luminescence study

2008 ◽  
Author(s):  
Sylvain Girard ◽  
Youcef Ouerdane ◽  
Claude Marcandella ◽  
Thierry Robin ◽  
Aziz Boukenter ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Radiation Effects ◽  
X Ray ◽  
Luminescence Study

Pulsed X-ray and /spl gamma/ rays irradiation effects on polarization-maintaining optical fibers

2004 ◽  
Vol 51 (5) ◽  
pp. 2740-2746 ◽  
Author(s):  
S. Girard ◽  
J. Keurinck ◽  
Y. Ouerdane ◽  
J.-P. Meunier ◽  
A. Boukenter ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Gamma Rays ◽  
Irradiation Effects ◽  
X Ray ◽  
Polarization Maintaining

Identification of Nanocrystalline Inclusions in Bismuth-Doped Silica Fibers and Preforms

2016 ◽  
Vol 22 (5) ◽  
pp. 987-996 ◽  
Author(s):  
Liudmila D. Iskhakova ◽  
Filipp O. Milovich ◽  
Valery M. Mashinsky ◽  
Alexander S. Zlenko ◽  
Sergey E. Borisovsky ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Room Temperature ◽  
Optical Loss ◽  
Laser Generation ◽  
Dopant Distribution ◽  
X Ray ◽  
The Core ◽  
Silica Fibers ◽  
Transmission Electron ◽  
Bismuth Concentration

AbstractThe nature of nanocrystalline inclusions and dopant distribution in bismuth-doped silicate fibers and preforms are studied by scanning and transmission electron microscopy, and energy and wavelength-dispersive X-ray microanalysis. The core compositions are Bi:SiO2, Bi:Al2O3–SiO2, Bi:GeO2–SiO2, Bi:Al2O3–GeO2–SiO2, and Bi:P2O5–Al2O3–GeO2–SiO2. Nanocrystals of metallic Bi, Bi2O3, SiO2, GeO2, and Bi4(GeO4)3 are observed in these glasses. These inclusions can be the reason for the background optical loss in bismuth-doped optical fibers. The bismuth concentration of 0.0048±0.0006 at% is directly measured in aluminosilicate optical fibers with effective laser generation (slope efficiency of 27% at room temperature).

Comparative Study of Pulsed X-Ray and$gamma$-Ray Radiation-Induced Effects in Pure-Silica-Core Optical Fibers

2006 ◽  
Vol 53 (4) ◽  
pp. 1756-1763 ◽  
Author(s):  
S. Girard ◽  
B. Brichard ◽  
J. Baggio ◽  
F. Berghmans ◽  
M. Decre
Keyword(s):  
Comparative Study ◽  
Optical Fibers ◽  
Gamma Ray ◽  
X Ray ◽  
Pure Silica ◽  
Radiation Induced ◽  
Silica Core

Gamma and x-ray irradiation effects on different Ge and Ge/F doped optical fibers

2015 ◽  
Vol 118 (8) ◽  
pp. 085901 ◽  
Author(s):  
A. Alessi ◽  
S. Girard ◽  
I. Reghioua ◽  
M. Fanetti ◽  
D. Di Francesca ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Irradiation Effects ◽  
X Ray

Thermoluminescence Properties of Optical Fibers Doped with RE+3 (RE=Sm, Nd) Ions Subjected to X-Ray Irradiation

2014 ◽  
Vol 606 ◽  
pp. 19-23
Author(s):  
Azadeh Refaei ◽  
Husin Wagiran ◽  
M.A. Saeed
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Glow Curve ◽  
Absorbed Dose ◽  
Rare Earth Doping ◽  
X Ray ◽  
Response Versus ◽  
Dose Ranging ◽  
Higher Temperature ◽  
Doping Type

This paper describes the thermoluminescence properties of RE+3(RE=Nd, Sm) doped optical fiber SiO2 prepared by CorActive company in Canada. The samples were exposed to 6 MV X-ray irradiation at dose ranging from 0.5 to 4 Gy at hospital Sultan Ismail, Johor Bahru, Malaysia using the LINAC accelerator. After exposure and a certain delay of 12 h to get uniform control of thermal fading, the optical fiber TL yield was readout using a TL reader. The optical fiber demonstrated a linear TL response versus of the absorbed dose. The linearity increases with the increasing dose while in the case of Sm-doped optical fiber; the response is comparatively smaller than Nd-doped optical fiber. Also, the glow curve of RE+3 ions doped optical fiber is compared with the undoped fibers. The results exhibit that the glow curve peaks are shifted to higher temperature due to rare-earth doping. As the results indicate the TL response strongly depends on the doping type of materials. All these TL characteristics are proposing this commercial optical fiber very decisive TL material.

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