30 May 2016 157km BOTDA with pulse coding and image processing
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Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99162S (2016) https://doi.org/10.1117/12.2236441
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland
Abstract
A repeater-less Brillouin optical time-domain analyzer (BOTDA) with 157.68km sensing range is demonstrated, using the combination of random fiber laser Raman pumping and low-noise laser-diode-Raman pumping. With optical pulse coding (OPC) and Non Local Means (NLM) image processing, temperature sensing with ±0.70°C uncertainty and 8m spatial resolution is experimentally demonstrated. The image processing approach has been proved to be compatible with OPC, and it further increases the figure-of-merit (FoM) of the system by 57%.
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Xianyang Qian, Xianyang Qian, Zinan Wang, Zinan Wang, Song Wang, Song Wang, Naitian Xue, Naitian Xue, Wei Sun, Wei Sun, Li Zhang, Li Zhang, Bin Zhang, Bin Zhang, Yunjiang Rao, Yunjiang Rao, } "157km BOTDA with pulse coding and image processing", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99162S (30 May 2016); doi: 10.1117/12.2236441; https://doi.org/10.1117/12.2236441
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