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Proceedings Paper

Photorefractive effect and photoinduced x(2) grating formation in germanosilicate core fibers codoped with nitrogen in MCVD process
Author(s): Eugeni M. Dianov; Alexei N. Guryanov; Vladimir F. Khopin; Valery M. Mashinsky; Oleg I. Medvedkov; Oleg D. Sazhin; Sergei A. Vasiliev; Nikolai N. Vechkanov; Yu. P. Yatsenko
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Paper Abstract

Single-mode germanosilicate-core optical fibers were fabricated by the MCVD process modified by sintering of the deposited soot in a reduced atmosphere (helium- or nitrogen- containing one). The fibers showed a higher photoinduced refractive index change and a higher efficiency of (chi) (2) formation as compared to an ordinary germanosilicate fiber. The sintering process in nitrogen and helium atmospheres was shown to increase the concentration of germanium oxygen-deficient centers. Besides, nitrogen appears to enter into the glass network in a sufficient concentration to modify the glass network and to additionally increase photosensitivity of the fibers.

Paper Details

Date Published: 17 May 2000
PDF: 9 pages
Proc. SPIE 4083, Advances in Fiber Optics, (17 May 2000); doi: 10.1117/12.385641
Show Author Affiliations
Eugeni M. Dianov, General Physics Institute (Russia)
Alexei N. Guryanov, Institute of Chemistry of High-Purity Substances (Russia)
Vladimir F. Khopin, Institute of Chemistry of High-Purity Substances (Russia)
Valery M. Mashinsky, General Physics Institute (Russia)
Oleg I. Medvedkov, General Physics Institute (Russia)
Oleg D. Sazhin, General Physics Institute (Russia)
Sergei A. Vasiliev, General Physics Institute (Russia)
Nikolai N. Vechkanov, Institute of Chemistry of High-Purity Substances (Russia)
Yu. P. Yatsenko, Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 4083:
Advances in Fiber Optics
Eugeni M. Dianov, Editor(s)

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