Gamma radiation-induced blue shift of resonance peaks of Bragg gratings in pure silica fibres

We report the first observation of a significant gamma radiation-induced blue shift of the reflection/transmission peak of fibre Bragg gratings inscribed into pure-silica core fibres via multiphoton absorption of femtosecond pulses. At a total dose of , the shift is . The observed effect is attribut...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2016-01, Vol.46 (2), p.150-154
Main Authors: Faustov, A.V., Gusarov, A.I., Mégret, P., Wuilpart, M., Kinet, D., Zhukov, A.V., Novikov, S.G., Svetukhin, V.V., Fotiadi, A.A.
Format: Article
Language:English
Subjects:
ABSORPTION
Blue shift
Bragg gratings
BRAGG REFLECTION
COLOR CENTERS
DOSES
Dosimeters
EXPERIMENT RESULTS
FIBERS
fibre Bragg gratings
Fibres
GAMMA RADIATION
grating inscription by femtosecond pulses
GRATINGS
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MULTI-PHOTON PROCESSES
PULSES
radiation effects
Reflection
remote sensing
SILICA
Silica glass
TEMPERATURE MONITORING
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Summary:We report the first observation of a significant gamma radiation-induced blue shift of the reflection/transmission peak of fibre Bragg gratings inscribed into pure-silica core fibres via multiphoton absorption of femtosecond pulses. At a total dose of , the shift is . The observed effect is attributable to the ionising radiation-induced decrease in the density of the silica glass when the rate of colour centre formation is slow. We present results of experimental measurements that provide the key parameters of the dynamics of the gratings for remote dosimetry and temperature sensing.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL15879