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Proceedings Paper

A distributed fiber optic sensor system for dike monitoring using Brillouin optical frequency domain analysis
Author(s): Nils Nöther; Aleksander Wosniok; Katerina Krebber; Elke Thiele
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Paper Abstract

We report on the development of a complete system for spatially resolved detection of critical soil displacement in river embankments. The system uses Brillouin frequency domain analysis (BOFDA) for distributed measurement of strain in silica optical fibers. Our development consists of the measurement unit, an adequate coating for the optical fibers and a technique to integrate the coated optical fibers into geotextiles as they are commonly used in dike construction. We present several laboratory and field tests that prove the capability of the system to detect areas of soil displacement as small as 2 meters. These are the first tests of truly distributed strain measurements on optical fibers embedded into geosynthetics.

Paper Details

Date Published: 7 April 2008
PDF: 9 pages
Proc. SPIE 6933, Smart Sensor Phenomena, Technology, Networks, and Systems 2008, 69330T (7 April 2008); doi: 10.1117/12.775133
Show Author Affiliations
Nils Nöther, Federal Institute for Materials Research and Testing (Germany)
Aleksander Wosniok, Federal Institute for Materials Research and Testing (Germany)
Katerina Krebber, Federal Institute for Materials Research and Testing (Germany)
Elke Thiele, Saxon Textile Research Institute (Germany)


Published in SPIE Proceedings Vol. 6933:
Smart Sensor Phenomena, Technology, Networks, and Systems 2008
Wolfgang Ecke; Kara J. Peters; Norbert G. Meyendorf, Editor(s)

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