Correlation between photodarkening and index change during 193 nm irradiation of germanosilicate and phosphosilicate fibers

Author

Canning, J. ; Carter, Adrian L G ; Sceats, Mark G.

Author_Institution

Australian Photonics Cooperative Res. Centre, Sydney, NSW, Australia

Volume

15

Issue

8

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

1348

Lastpage

1356

Abstract

Photodarkening at visible wavelengths and index changes are simultaneously studied as germanosilicate or phosphosilicate fiber is irradiated with 193 nm light. Using a modal interferometer, the relaxation of the photodarkening is shown to occur on a different timescale to relaxation of the index change. Spectral attenuation profiles are used to distinguish the relationship between index change and photodarkening due to both electronic absorption and Rayleigh scattering. The role of hydrogen on both processes is also studied

Keywords

Rayleigh scattering; light interferometry; optical correlation; optical fibre testing; photochromism; refractive index; 193 nm; Rayleigh scattering; electronic absorption; germanosilicate fibers; index change; light interferometry; nm irradiation; optical correlation; optical fiber measurements; phosphosilicate fibers; photodarkening; spectral attenuation profiles; Absorption; Australia; Canning; Glass; Hydrogen; Optical attenuators; Optical fibers; Optical interferometry; Photochromism; Rayleigh scattering;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.618339

Filename

618339