Title :
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
fDate :
8/1/1997 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
