17 October 2012 Towards fully distributed amplification and high-performance long-range distributed sensing based on random fiber laser
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842127 (2012) https://doi.org/10.1117/12.975168
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
The random distributed feedback fiber laser (RDFB-FL), firstly proposed and demonstrated by S. K. Turitsyn et al., has been designated as the significant breakthrough in the fields of laser physics and nonlinear optics. In this paper, the fully distributed Raman amplification approach, based on the novel concept of RDFB-FL, is proposed and presented for the first time. As a typical proof-of-concept, the high-performance distributed sensing with ±1°C temperature accuracy and ±2m spatial resolution, over entire 122km long-range Brillouin optical time-domain analyzer (BOTDA), has been demonstrated using the fully distributed second-order Raman amplification based on RDFB-FL proposed. The experimental results confirmed its unique ultra-low noise performance for the proposed distributed amplification. We believe it's the best sensing result for such a length of BOTDA so far. The underlined physical mechanisms associated with its quasi-lossless transmission and partial coherence characteristics, are also presented, in order to account for this much attractive feature.
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Xin-Hong Jia, Yun-Jiang Rao, Zi-Nan Wang, Wei-Li Zhang, Yun Jiang, Jun-Mei Zhu, Zi-Xin Yang, "Towards fully distributed amplification and high-performance long-range distributed sensing based on random fiber laser", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842127 (17 October 2012); doi: 10.1117/12.975168; https://doi.org/10.1117/12.975168
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