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Proceedings Paper

Discriminative measurement of strain and temperature using Brillouin scattering and fluorescence in erbium-doped optical fiber
Author(s): Mingjie Ding; Yosuke Mizuno; Kentaro Nakamura
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Paper 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.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91579D (2 June 2014); doi: 10.1117/12.2059438
Show Author Affiliations
Mingjie Ding, Tokyo Institute of Technology (Japan)
Yosuke Mizuno, Tokyo Institute of Technology (Japan)
Kentaro Nakamura, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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