Dependence of fluorescence lifetime in praseodymium-doped silica optical fibres upon strain and temperature

Abstract

Measurements of the temperature and strain responses of fluorescence lifetimes for two transitions in praseodymium-doped silica optical fibres are presented. These properties were found to be similar to those measured for other rare-earth-doped fibres, except for the strain response. In particular, the fluorescence lifetime of the , 3H6 transition (centred on 870 nm) exhibited a slight decrease with applied strain, rather than an increase. This has implications for our understanding of how strain in rare-earth-doped optical fibres affects fluorescence properties.