Effect of cladding material on 2-eV optical absorption in pure-Silica core fibers and method to suppress the absorption

Kaya Nagasawa, Ryoichi Tohmon, Yoshimichi Ohki

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)148-151
Number of pages4
JournalJapanese journal of applied physics
Volume26
Issue number1 R
DOIs
Publication statusPublished - 1987 Jan

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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