Perfluorinated graded-index polymer optical fibers for distributed measurement of strain
- Recently, we have proposed, to our knowledge for the first time, to use perfluorinated graded-index polymer optical fiber (POF) for distributed measurement of strain. Thanks to their low attenuation and low modal dispersion compared to standard-POF, this fiber type allows to extend the measurement length to more than 500 meters at increased spatial resolution. In this paper, two mechanisms for strain sensing are introduced. As in standard PMMA POF, strain in the fiber can be detected by evaluating the local backscatter increase occurring at strained fiber sections. Further, we propose, to our knowledge for the first time, a true distributed length change measurement in POF using cross-correlation analysis of the fibers characteristic backscatter signature. Using this technique, it is possible to measure relative displacement between different fiber sections avoiding signal fading failures that are inherent in other measurement principles. Cross-sensitivities to the sensor signal, asRecently, we have proposed, to our knowledge for the first time, to use perfluorinated graded-index polymer optical fiber (POF) for distributed measurement of strain. Thanks to their low attenuation and low modal dispersion compared to standard-POF, this fiber type allows to extend the measurement length to more than 500 meters at increased spatial resolution. In this paper, two mechanisms for strain sensing are introduced. As in standard PMMA POF, strain in the fiber can be detected by evaluating the local backscatter increase occurring at strained fiber sections. Further, we propose, to our knowledge for the first time, a true distributed length change measurement in POF using cross-correlation analysis of the fibers characteristic backscatter signature. Using this technique, it is possible to measure relative displacement between different fiber sections avoiding signal fading failures that are inherent in other measurement principles. Cross-sensitivities to the sensor signal, as fiber bends and temperature, are investigated and quantified.…
Autor*innen: | Sascha LiehrORCiD, Philipp Lenke, Mario Wendt, Katerina Krebber |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | 17th International Conference on Plastic Optical Fibers (POF 2008), August 25-28, 2008, Santa Clara, California, USA (Proceedings) |
Jahr der Erstveröffentlichung: | 2008 |
Ausgabe/Heft: | Paper 64 |
Erste Seite: | 1 |
Letzte Seite: | 5 |
Freie Schlagwörter: | Distributed strain sensor; Optical fiber sensor; POF sensors; Perfluorinated POF |
Veranstaltung: | 17th International Conference on Plastic Optical Fibers (POF 2008) |
Veranstaltungsort: | Santa Clara, California, USA |
Beginndatum der Veranstaltung: | 2008-08-25 |
Enddatum der Veranstaltung: | 2008-08-28 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |