Journal
OPTICS EXPRESS
Volume 19, Issue 2, Pages 1198-1206Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.001198
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- Council of Scientific & Industrial Research, India
- Australian Research Council
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In light of recent proposals linking structural change and stresses within regenerated gratings, the details of regeneration of a seed Type-I Bragg grating written in H-2 loaded germanosilicate fiber annealed at high temperatures (similar to 900 degrees C) are systematically explored. In particular, the influence of the strength of the grating, the effect of GeO2 doping concentration and the annealing conditions on regeneration are studied. We show that the role of dopants such as Ge and F contribute nothing to the regeneration, consistent with previous results. Rather, they may potentially be detrimental. Strongest regenerated gratings with R similar to 35% from a 5mm seed grating could be obtained in fibres with the lowest GeO2 concentrations such as standard telecommunications-compatible grade fibre. (C) 2010 Optical Society of America
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