Performance of special radiation-hardened optical fibers intended for use in the telecom spectral windows at a megagray level

Author

Tomashuk, A.L. ; Dianov, E.M. ; Golant, K.M. ; Khrapko, R.R. ; Spinov, D.E.

Author_Institution

Gen. Phys. Inst., Acad. of Sci., Moscow, Russia

Volume

45

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

1566

Lastpage

1569

Abstract

Gamma-radiation-induced absorption spectra (2.15 MGy(Si)) are compared in N-doped and pure silica fibers fabricated by surface plasma CVD-process under different regimes with the aim to reveal the chief absorption mechanisms in the telecom spectral windows and to work out an optimum fiber design. The long wavelength absorption edge is shown to be the main absorption mechanism at megagray doses. Its value increases with increasing bonded hydrogen concentration in the fiber glass network and is slightly greater in N-doped fibers. No nitrogen-related color centers have been revealed in the short wavelength loss edge, which is determined by chlorine impurity in silica

Keywords

gamma-ray effects; optical fibres; plasma CVD coatings; radiation hardening (electronics); 2.15 MGy; N-doped silica fiber; SiO₂; SiO₂:N; bonded hydrogen concentration; gamma-radiation-induced absorption spectra; glass network; pure silica fiber; radiation-hardened optical fiber; surface plasma CVD; telecom spectral window; wavelength absorption edge; Bonding; Electromagnetic wave absorption; Glass; Hydrogen; Optical fibers; Optical surface waves; Plasma waves; Silicon compounds; Telecommunications; Windows;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.685240

Filename

685240