Abstract
Irreversible refractive index changes in silica-based optical fibers under the action of UV radiation (photorefractive effect) are associated with the presence of oxygen vacancies in the core glass (Si-ODC & Ge-ODC). Although the microscopic mechanism of the photorefractive effect has not been established in detail, it is Ge-ODC that ensure UV light delivery into the fiber core owing to their strong absorption band centered at 242 nm. Naturally, one of the ways of increasing photosensitivity of silica-based fibers is optimization of the preform fabrication regimes with a view to maximize the Ge-ODC concentration.
© 1997 Optical Society of America
PDF ArticleMore Like This
V. A. Bogatyrjov, E. M. Dianov, K. M. Golant, R. R. Khrapko, and A. S. Kurkov
ThH7 Optical Fiber Communication Conference (OFC) 1995
E.M. Dianov, K.M. Golant, V.M. Mashinsky, O.I. Medvedkov, I.V. Nikolin, O.D. Sazhin, and S.A. Vasiliev
BME.2 Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides (BGPP) 1997
J.W. Lee, G.H. Sigel, and Jie Li
JMA.5 Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides (BGPP) 1997