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17 October 2012 Fast and distributed Brillouin time domain analysis of optical fibers
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842113 (2012) https://doi.org/10.1117/12.974976
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
We present two recently developed new methods for fast and distributed strain/temperature sensing in optical fibers, based on Brillouin optical time domain analysis (BOTDA). Both methods make use of very fast (<1ns) and controlled tuning of the optical frequency of a light wave. In the Fast BOTDA (F-BOTDA) method the complete Brillouin gain spectrum is scanned, while in the Slope-Assisted technique (SA-BOTDA) only a single frequency point on the slope of the Brillouin gain spectrum is probed. A sensing speed of a few hundred Hz is experimentally demonstrated, limited only by the fiber length and the need for averaging.
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Yair Peled, Avi Motil, Lior Yaron, and Moshe Tur "Fast and distributed Brillouin time domain analysis of optical fibers", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842113 (17 October 2012); https://doi.org/10.1117/12.974976
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