Optical fiber properties influence on strain coefficient C&#949; of Brillouin frequency shift

Y. Sikali Mamdem; F. Taillade; Y. Jaouën; R. Gabet; G. Moreau; X. Phéron; S. Delepine-Lesoille

doi:10.1117/12.965541

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7 November 2012 Optical fiber properties influence on strain coefficient C_ε of Brillouin frequency shift

Y. Sikali Mamdem, F. Taillade, Y. Jaouën, R. Gabet, G. Moreau, X. Phéron, S. Delepine-Lesoille

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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84219B (2012) https://doi.org/10.1117/12.965541
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Usually, strain and temperature coefficients of Brillouin frequency shift (BFS) of optical fibers result from experimental measurements. For the first time, theoretical strain dependence of BFS is analyzed depending on fiber properties. Based on a FEM-2D modeling, the strain coefficient C_ε is determined considering geometrical profile, doping composition and drawing conditions. Theoretical results showed great accordance with measurements for different types of single-mode fibers. The C_ε coefficient is evaluated with a relative uncertainty better than 8%. Significant C_ε magnitude variation has been observed depending on doping profile. This paves the way towards major improvement of strain optical fiber sensors.

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Y. Sikali Mamdem, F. Taillade, Y. Jaouën, R. Gabet, G. Moreau, X. Phéron, and S. Delepine-Lesoille "Optical fiber properties influence on strain coefficient C_ε of Brillouin frequency shift", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219B (7 November 2012); https://doi.org/10.1117/12.965541

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