Frequency domain-based distributed and dynamic optical fiber sensing in geotechnical and industrial monitoring
- This article reports on recent advancements in the field of distributed optical fiber sensing with a focus on the monitoring of geotechnical structures and buildings. While the classical time-domain approach to distributed sensing is widely known, this article provides an introduction into the frequency-domain analysis technique for both distributed Brillouin measurements (as commonly used for strain and temperature monitoring) and for linear backscattering measurements. The article also addresses an issue which arises when truly distributed measurements are compared among each other; a new approach to calculate differential curves from a measurement and a base-line which avoids misleading large amplitudes at physical events with strong gradients is proposed. Finally, a field test of a new read-out technology, the OFDR (optical frequency domain reflectometry) technique providing dynamic readings of length changes between discrete fiber positions, is presented.
Autor*innen: | N. Nöther, O. Gili, Sascha LiehrORCiD, P. Lenke |
---|---|
Persönliche Herausgeber*innen: | A. Ilki, M. Motavalli, C. Goksu, B. Havranek |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | SMAR 2013 - 2nd Conference on smart monitoring, assessment and rehabilitation of civil structures (Proceedings) |
Jahr der Erstveröffentlichung: | 2013 |
Herausgeber (Institution): | Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA) |
Verlagsort: | Istanbul, Turkey |
Erste Seite: | 1 |
Letzte Seite: | 8 |
Veranstaltung: | SMAR 2013 - 2nd Conference on smart monitoring, assessment and rehabilitation of civil structures |
Veranstaltungsort: | Istanbul, Turkey |
Beginndatum der Veranstaltung: | 09.09.2013 |
Enddatum der Veranstaltung: | 11.09.2013 |
ISBN: | 978-3-033-04055-7 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |