B8.3 Influence of Temperature on Distributed Strain Sensing with OTDR in Polymer Optical Fibers
- SMSI 2021
2021-05-03 - 2021-05-06
- SMSI 2021 - Sensors and Instrumentation
- B8 Fiber Optic Sensors
- S. Dengler, N. Schmidt, M. Luber, J. Fischer, O. Ziemann, R. Engelbrecht - Technische Hochschule Nürnberg Georg Simon Ohm, Nuremberg (Germany), H. Hangen - HUESKER Synthetic GmbH, Gescher (Germany)
- 155 - 156
Strain in ground and earthworks can be measured by polymer optical fibers (POF) applied to geotextiles. We measure the increase of backscatter (IOB) in the fiber under strain using optical time domain reflectometry (OTDR). The effect of temperature on this measurement principle is investigated. The local backscatter changes by 0.003 dB/K for common ambient temperature. In addition it is shown, that temperature depended viscoelastic properties of the polymer does affect IOB.