TY  - CONF
A1  - Liehr, Sascha
T1  - Distributed strain and temperature change detection using optical frequency domain reflectometry
N2  - We propose the optical frequency Domain reflectometry (OFDR) technique based on intensity modulation frequency sweep measurement for coherent distributed sensing applications. By evaluating interferometric Rayleigh scattering changes along the fibre, strain and temperature changes can be detected with a sensitivity in the ne-range and 10 mK temperature resolution. Low Vibration frequencies and vibrations up to the kHz-range can be detected by differential power change evaluation in the spatial domain. This OFDR approach is a low-cost alternative to distributed vibration sensing based on C-OTDR up to distances of several kilometres.
T2  - EAGE/DGG Workshop on Fibre Optics Technology in Geophysics
CY  - Potsdam, Germany
DA  - 31.03.2017
KW  - Optical fiber sensor
KW  - Distributed sensing
KW  - Interferometer
KW  - Strain sensing
KW  - Temperature sensing
PY  - 2017
AN  - OPUS4-39864
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -