Motion compensation in distributed fiber optic sensing via optical frequency domain reflectometry

Joseph J. Bos; Nur Aida Abdul Rahim

doi:10.1117/12.2058789

2 June 2014 Motion compensation in distributed fiber optic sensing via optical frequency domain reflectometry

Joseph J. Bos, Nur Aida Abdul Rahim

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91575R (2014) https://doi.org/10.1117/12.2058789
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We demonstrate a novel algorithm for removing adverse effects of motion in distributed strain measurements via Optical Frequency Domain Reflectometry (OFDR), using Rayleigh backscatter from low-bend loss fiber as the transducer. Vibration amplitudes and frequencies of 2.5 Gs and up to 50 Hz, respectively, were corrected for in real-time while measuring up to 10,000 microstrain. Results show 99.3% recovery of motion-affected strain data while maintaining 0.3% accuracy and 5 mm spatial resolution. Measurement acquisition rates were 23.8 Hz and 100 Hz. These results demonstrate that OFDR may be used in dynamic environments to provide accurate and high-resolution, distributed strain measurements.

Citation Download Citation

Joseph J. Bos and Nur Aida Abdul Rahim "Motion compensation in distributed fiber optic sensing via optical frequency domain reflectometry", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91575R (2 June 2014); https://doi.org/10.1117/12.2058789

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