Discriminative measurement of strain and temperature using Brillouin scattering and fluorescence in erbium-doped optical fiber

Mingjie Ding; Yosuke Mizuno; Kentaro Nakamura

doi:10.1117/12.2059438

2 June 2014 Discriminative measurement of strain and temperature using Brillouin scattering and fluorescence in erbium-doped optical fiber

Mingjie Ding, Yosuke Mizuno, Kentaro Nakamura

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91579D (2014) https://doi.org/10.1117/12.2059438
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A novel discriminative strain and temperature measurement is demonstrated using Brillouin scattering and fluorescence in an erbium-doped fiber (EDF). The fluorescence intensity ratio, calculated using the fluorescence intensities (or powers) at 1530 nm and at 1565 nm, is linearly dependent on temperature with a proportionality constant of 7.5 × 10^–4/°C, but is not influenced by strain. By combining the strain- and temperature-dependences of Brillouin frequency shift in EDFs, the applied strain of 0.4% and the temperature of 20.0°C were successfully discriminated with measurement errors of 0.03% and 0.6°C, respectively.

Citation Download Citation

Mingjie Ding, Yosuke Mizuno, and Kentaro Nakamura "Discriminative measurement of strain and temperature using Brillouin scattering and fluorescence in erbium-doped optical fiber", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91579D (2 June 2014); https://doi.org/10.1117/12.2059438

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