Fabrication and Gamma-Ray Irradiation Effect on Optical and Mechanical Properties of Germano-Silicate Glass Fibers with Inner Cladding of B and F Doped Silica Glasses |
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| Authors: | S Ju P R Watekar Y-T Ryu Y Lee S G Kang Y Kim |
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| Institution: | 1. School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, South Korea;2. Advanced Optical Lens Research Center/Smart Photonics Research Center/Laser Research Center, Korea Photonics Technology Institute, Gwangju, South Korea |
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| Abstract: | ABSTRACTThe effect of glass composition, pure silica glass, boron-doped and fluorine-doped silica glasses of inner cladding, in the germano-silicate glass core fibers on optical and mechanical properties upon the γ-ray irradiation was investigated. Enhanced radiation hardening at 1,550 nm was found in both the B- and F-doped fibers after the γ-ray irradiation with dose-rate of 1.25 kGy/h. The radiation-induced attenuation (RIA) was found to increase in the order of the B-doped fiber, the F-doped fiber, and the silica fiber. While no major influence on the refractive index of the fibers after the γ-ray irradiation was found, the residual stress was slightly changed. |
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| Keywords: | Optical fiber cladding glass composition optical properties gamma-ray radiation radiation-induced attenuation |
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