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Proceedings Paper

Brillouin gain spectrum characteristics for temperature compensation in fiber optic distributed strain sensor
Author(s): Aleksander Wosniok
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Paper Abstract

We studied Brillouin gain spectrum characteristics in single-mode optical fibers with different refractive index profiles to realize temperature-corrected distributed strain measurement. The measured Brillouin frequency shift (BFS) features much stronger dependence on the longitudinal strain in the sensor fiber than on the temperature distribution along the fiber optic sensor. By detection of slight structural changes in monitored civil structures, such as dams, pipelines and tunnels, the influence of temperature on the measured BFS cannot be neglected.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219T (7 November 2012); doi: 10.1117/12.974841
Show Author Affiliations
Aleksander Wosniok, BAM Federal Institute for Materials Research and Testing (Germany)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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