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28 September 2015 Multi-parameter sensing based on the stimulated Brillouin scattering of higher-order acoustic modes in OAM fiber
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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96340L (2015) https://doi.org/10.1117/12.2194673
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil
Abstract
We report for the first time a unique multi-parameter optical fiber sensor based on the stimulated scattering of higher order acoustic modes of Orbital Angular Momentum (OAM) guiding fiber. Both optical modes and acoustic modes guided within the core region of OAM fiber are characterized and demonstrated theoretically and experimentally. Simulation analysis shows that the multi-peak feature in the Brillouin gain spectrum (BGS) of OAM fiber is attributed to the couplings among the guided optical modes and higher-order acoustic modes. The frequency shifts of first two Brillouin peaks are successfully monitored to discriminate the temperature and strain with an accuracy of 0.21oC and 4.6με.
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Yanping Xu, Meiqi Ren, Yang Lu, Ping Lu, Xiaoyi Bao, and Sophie LaRochelle "Multi-parameter sensing based on the stimulated Brillouin scattering of higher-order acoustic modes in OAM fiber", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340L (28 September 2015); https://doi.org/10.1117/12.2194673
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