Direct observation of UV induced bleaching of 240 nm absorption band in photosensitive germanosilicate glass fibres

13 February 1992

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 28 (4) , 369-371
https://doi.org/10.1049/el:19920231

Abstract

Ultraviolet loss measurements on germanosilicate fibre samples showing an intense absorption, centred at 242 nm, with an associated fluorescence at 413 nm are presented. The first direct observation is reported of the bleaching of this 240 nm band under the action of ultraviolet irradiation, evidence which is consistent with the Kramers-Kronig model for the photosensitive refractive index change in these glasses.

Keywords

PHOTOSENSITIVE REFRACTIVE INDEX CHANGE
INTENSE ABSORPTION
SIO2-GEO2 GLASS FIBRE
UV INDUCED BLEACHING
KRAMERS-KRONIG MODEL
UV LOSS MEASUREMENTS
GERMANOSILICATE GLASS FIBRES
413 NM
ULTRAVIOLET IRRADIATION
FLUORESCENCE
242 NM

This publication has 1 reference indexed in Scilit:

The Effect of Laser Heating on Optical Properties of Germania Doped Silica Optical Waveguides
MRS Proceedings, 1986