LASER-GENERATED ULTRASONIC CHARACTERIZATION OF IRRADIATED GLASS OPTICAL FIBERS

Citation
Jc. Poret et al., LASER-GENERATED ULTRASONIC CHARACTERIZATION OF IRRADIATED GLASS OPTICAL FIBERS, Journal of non-crystalline solids, 160(1-2), 1993, pp. 82-88
Citations number
14
Categorie Soggetti
Material Science, Ceramics
ISSN journal
00223093
Volume
160
Issue
1-2
Year of publication
1993
Pages
82 - 88
Database
ISI
SICI code
0022-3093(1993)160:1-2<82:LUCOIG>2.0.ZU;2-Y
Abstract
Glass optical fibers were irradiated from 100 krad (Si) to 1 Mrad (Si) with gamma radiation from a cobalt-60 source. The irradiated fibers w ere characterized with laser-generated ultrasonics as well as electron spin resonance techniques. Phosphorus- and germanium-based color cent ers were observed in the exposed fibers, and the intensity of the colo r centers was found to increase as the fibers were exposed to larger r adiation doses. The extensional wave speed was found to decrease with increasing radiation exposure owing to elastic softening of the fiber. A linear relationship was inferred between the electron spin resonanc e intensity and the extensional wave speed.