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

Journal Article · Sat Feb 27 23:00:00 EST 2016 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL15879· OSTI ID:22551094

Faustov, A V; Mégret, P; Wuilpart, M; Kinet, D ^[1]; Gusarov, A I ^[2]; Zhukov, A V; Novikov, S G; Svetukhin, V V ^[3]; Fotiadi, A A ^[4]

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1. University of Mons, B7000 Mons (Belgium)
2. SCK-CEN, Mol (Belgium)
3. Ulyanovsk State University, Ulyanovsk (Russian Federation)
4. Ioffe Physical Technical Institute, Russian Academy of Sciences, St. Petersburg (Russian Federation)

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 ∼100 kGy, the shift is ∼20 pm. 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. (laser crystals and braggg ratings)

• OSTI ID: 22551094
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 2 Vol. 46; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
BRAGG REFLECTION
COLOR CENTERS
DOSES
EXPERIMENT RESULTS
FIBERS
GAMMA RADIATION
GRATINGS
MULTI-PHOTON PROCESSES
PULSES
SILICA
TEMPERATURE MONITORING