An X-ray absorption study of doped silicate glass, fibre optic preforms

Bowron, Daniel Timothy and Newport, Robert J. and Rigden, Jane S. and Tarbox, E.J. and Oversluizen, M. (1996) An X-ray absorption study of doped silicate glass, fibre optic preforms. Journal of Materials Science, 31 (2). pp. 485-490. ISSN 0022-2461. (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided)

Restricted to Repository staff only
Contact us about this Publication Download (11MB)
Official URL


Optical fibre preforms, which have their germanosilicate core regions doped with small quantities of the rare-earth element erbium, have been studied using Extended X-ray Absorption Fine Structure Spectroscopy (EXAFS) at the germanium K absorption edge. These studies were performed using a circular X-ray beam of 100 mu m diameter, allowing information to be gathered as a radial function of position across the core region of the preform. This positioning was accomplished by means of a motorized pinhole collimator and sample stage developed for use on the focused X-ray beamline 8.1, at the SRS, Daresbury Laboratory, UK. The EXAFS results are consistent with the germanium sites coordinated to surrounding oxygen atoms at a mean distance of 0.17 nm. Absorption maps of the rare-earth and germanium distribution across the core region of the preforms have also been obtained, showing a correlation between the distributions of the two atom types.

Item Type: Article
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: J.M. Smith
Date Deposited: 29 Apr 2009 15:17
Last Modified: 17 Jul 2014 09:26
Resource URI: (The current URI for this page, for reference purposes)
  • Depositors only (login required):


Downloads per month over past year