30 May 2016 Phase-OFDR for distributed disturbance measurement
Author Affiliations +
Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 991624 (2016) https://doi.org/10.1117/12.2236851
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland
Abstract
We introduce the optical frequency domain reflectometry (OFDR) technique based on intensity modulation frequency sweep measurement for distributed disturbance measurement in optical fibres. By evaluating interferometric Rayleigh scattering changes along the fibre, strain and temperature changes are detected with 100 n(epsilon) sensitivity and 10 mK resolution. The vibration frequencies for low frequencies and up to the kHz-range can be obtained from power change evaluation in the spatial domain. This novel OFDR approach is a low-cost alternative for distributed disturbance measurement up to distances of several kilometres.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sascha Liehr, Sascha Liehr, Katerina Krebber, Katerina Krebber, } "Phase-OFDR for distributed disturbance measurement", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991624 (30 May 2016); doi: 10.1117/12.2236851; https://doi.org/10.1117/12.2236851
PROCEEDINGS
4 PAGES


SHARE
Back to Top