Effect of Cladding Material on 2-eV Optical Absorption in Pure-Silica Core Fibers and Method to Suppress the Absorption

Japanese Journal of Applied Physics - Tập 26 Số 1R - Trang 148 - 1987
Kaya Nagasawa1, Ryoichi Tohmon1, Yoshimichi Ohki1
1Department of Electrical Eng. Waseda Univ.

Tóm tắt

The growth of 2-eV optical absorption induced by γ-ray irradiation is larger in pure-silica core fibers with a dopedglass cladding than in the fibers with a silicone cladding, regardless of the manufacturing process. Precursors of nonbridging oxygen hole centers which abundantly exist at the core/cladding interface of the glass-cladding fibers are responsible for the difference in the absorption. A combined-treatment of hydrogen and γ-ray irradiation can remove these precursors and suppress the absorption.

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Tài liệu tham khảo

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Thông tin xuất bản

Japanese Journal of Applied Physics

Tập 26 Số 1R

148

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