20 May 2013 L-BOFDA: a new sensor technique for distributed Brillouin sensing
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Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879431 (2013) https://doi.org/10.1117/12.2025378
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland
Abstract
We propose a new scheme of Brillouin optical frequency-domain analysis (BOFDA) for distributed fiber-optic strain and temperature sensing, named linear-configured BOFDA (L-BOFDA). In conventional loop-configured BOFDA, light injection into both ends of a fiber under test (FUT) is needed for counter-propagation of pump and probe waves. In contrast, in L-BOFDA, pump and probe waves are injected into the same end of an FUT, and the probe wave Fresnelreflected (or mirror-reflected) at the other end of the FUT is exploited; thus, one-end access is feasible. We show proof-of-concept results of distributed strain measurement in a silica single-mode fiber with L-BOFDA, and discuss the signal-to-noise ratio degradation and the benefit in developing distributed Brillouin sensors based on polymer optical fibers.
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Aleksander Wosniok, Yosuke Mizuno, Katerina Krebber, Kentaro Nakamura, "L-BOFDA: a new sensor technique for distributed Brillouin sensing", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879431 (20 May 2013); doi: 10.1117/12.2025378; https://doi.org/10.1117/12.2025378
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