Brillouin scattering based sensor in high gamma dose environment: design and optimization of optical fiber for long-term distributed measurement

X. Phéron; J. Bertrand; S. Girard; Y. Ouerdane; S. Delepine-Lesoille; A. Boukenter

doi:10.1117/12.975225

7 November 2012 Brillouin scattering based sensor in high gamma dose environment: design and optimization of optical fiber for long-term distributed measurement

X. Phéron, J. Bertrand, S. Girard, Y. Ouerdane, S. Delepine-Lesoille, A. Boukenter

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421A4 (2012) https://doi.org/10.1117/12.975225
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Brillouin sensing is an interesting technology to monitor strain inside large civil engineering structures like nuclear waste repository. In radiative environments, performance degradation of Brillouin systems still needs to be investigated. In this paper, we fully characterized the Brillouin response of two different optical fibers, including the SMF28 fiber from Corning, under high gamma doses. Radiations increase the fiber linear attenuation and can also lead to a shift in the Brillouin frequency. We reduced these effects by designing a radiation resistant optical fiber. This fiber is well adapted for distributed sensing application using Brillouin scattering in MGy dose level environment.

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X. Phéron, J. Bertrand, S. Girard, Y. Ouerdane, S. Delepine-Lesoille, and A. Boukenter "Brillouin scattering based sensor in high gamma dose environment: design and optimization of optical fiber for long-term distributed measurement", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421A4 (7 November 2012); https://doi.org/10.1117/12.975225

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