Title :
Radiation-Induced Attenuation in Silica Optical Fibers Fabricated in High O2 Excess Conditions
Author :
Kashaykin, Pavel F. ; Tomashuk, Alexander L. ; Salgansky, Mikhail Y. ; Abramov, Alexey N. ; Nishchev, Konstantin N. ; Guryanov, Alexey N. ; Dianov, Evgeny M.
Author_Institution :
Fiber Opt. Res. Center, Moscow, Russia
Abstract :
Radiation-induced attenuation (RIA) in undoped-silica-core optical fibers, of which the preform cores are synthesized in high O2 excess conditions in the vapor-gas mixture (“high oxygen excess fibers, HOE-fibers”), is investigated in the spectral range 1.1-1.7 μm under γ-irradiation from a 60Co-source. The O2 excess degree, the F content in the cladding, the drawing speed, and tension are varied among the fibers. RIA is found to strongly depend on the balance between the O2 excess degree in the core and the F content in the cladding and also on the fiber drawing tension. RIA anticipated in HOE-fibers with optimized O2 excess and a practicably low drawing tension at λ = 1.55 μm is estimated to be a few times lower than that in the commercial radiation-resistant F-doped-silica-core fibers.
Keywords :
drawing (mechanical); fluorine; optical fibre cladding; oxygen; silicon compounds; γ-irradiation; 60Co-source; F content; HOE-fibers; O2; O2 excess degree; RIA; SiO2:F; cladding; drawing speed; fiber drawing tension; high O2 excess conditions; high oxygen excess fibers; preform cores; radiation-induced attenuation; radiation-resistant F-doped-silica-core fibers; undoped-silica-core optical fibers; vapor-gas mixture; wavelength 1.1 mum to 1.7 mum; wavelength 1.55 mum; Optical fiber networks; Optical fiber sensors; Optical fiber testing; Optical fibers; Radiation effects; Silicon compounds; Optical fiber radiation effects; RIA; optical fiber radiation resistance; radiation-induced attenuation (RIA);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2015.2394806
