Spectroscopic studies of the origin of radiation-induced degradation in phosphorus-doped optical fibers and preforms

2010 ◽  
Vol 108 (12) ◽  
pp. 123103 ◽  
Author(s):  
G. Origlio ◽  
F. Messina ◽  
S. Girard ◽  
M. Cannas ◽  
A. Boukenter ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Spectroscopic Studies ◽  
Radiation Induced ◽  
Phosphorus Doped

Gamma and UV Radiation-Induced Color Centers in Optical Fibers

2005 ◽  
Vol 480-481 ◽  
pp. 323-328 ◽  
Author(s):  
Sylvain Girard ◽  
E. Régnier ◽  
A. Boukenter ◽  
Y. Ouerdane ◽  
J.-P. Meunier ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Fiber Type ◽  
Low Cost ◽  
Nuclear Space ◽  
Paramagnetic Centers ◽  
Oxygen Hole ◽  
Spin Resonance ◽  
Radiation Induced ◽  
Phosphorus Doped ◽  
Hole Centers

Radiation-induced losses and paramagnetic centers were investigated in phosphorusdoped and P-free multimode germanosilicate optical fibers after g-rays (~1 MeV) and ultraviolet (5 eV) exposures. After both types of irradiation, the same defects seem to be responsible of the fiber absorption in the spectral range 400 to 1650 nm. In particular, the P1 centers and the Phosphorus Oxygen Hole centers are created in both cases in the phosphorus-doped fibers and explain the high permanent radiation-induced attenuation levels observed in this fiber type. Luminescence and electron spin resonance measurements (77 K, ~9.38 GHz) on irradiated samples confirm that the GeE’, SiE’ and NBOHC defects are also generated in the different irradiated samples. From this study, it seems that the pertinence of a multimode fiber for nuclear space or civil applications could be estimated through low-cost ultraviolet measurements.

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