23 April 2017 Multiplexing curvature sensors using fibre segment interferometry for lateral vibration measurements
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032317 (2017) https://doi.org/10.1117/12.2264781
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
Dynamic fibre-optic curvature sensing is demonstrated by interrogating chains of fibre segments, separated by broadband Bragg grating reflectors, using range-resolved interferometry (RRI). Four fibre strings, containing four fibre segments each of gauge length 20 cm, are attached to the opposing sides of a support structure and the resulting differential strain measurements allow inference of lateral displacements of a cantilever test object. Dynamic tip displacement resolutions in the micrometre range at an interferometric bandwidth of 21 kHz demonstrate the suitability of this approach for highly sensitive and cost-effective fibre-optic directional vibration measurements of smart structures.
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Thomas Kissinger, Thomas Kissinger, Edmon Chehura, Edmon Chehura, Stephen W. James, Stephen W. James, Ralph P. Tatam, Ralph P. Tatam, } "Multiplexing curvature sensors using fibre segment interferometry for lateral vibration measurements", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032317 (23 April 2017); doi: 10.1117/12.2264781; https://doi.org/10.1117/12.2264781
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