142.2km BOTDA based on ultra-long fiber laser with a ring cavity

Xin-Hong Jia; Yunjiang Rao; Zi-Nan Wang; Wei-Li Zhang; Cheng-Xu Yuan; Xiao-Dong Yan; Jin Li; Han Wu; Ye-Yu Zhu; Fei Peng

doi:10.1117/12.2034578

15 October 2013 142.2km BOTDA based on ultra-long fiber laser with a ring cavity

Xin-Hong Jia, Yunjiang Rao, Zi-Nan Wang, Wei-Li Zhang, Cheng-Xu Yuan, Xiao-Dong Yan, Jin Li, Han Wu, Ye-Yu Zhu, Fei Peng

Author Affiliations +

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89241A (2013) https://doi.org/10.1117/12.2034578
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

A novel distributed Raman amplification (DRA) scheme based on ultra-long fiber laser (UL-FL) pumping with a ring cavity rather than a linear cavity is proposed and demonstrated, for the first time. As a typical application of the proposed configuration, ultra-long-distance distributed sensing with Brillouin optical time-domain analysis (BOTDA) over 142.2km fiber with 5m spatial resolution and ± 1.5℃ temperature uncertainty is achieved, without any repeater, for the first time. The key point for the significant performance improvement is the system could offer both of uniform gain distribution and considerably suppressed pump-probe relative intensity noise (RIN) transfer, by optimized design of system structure and parameters.

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Xin-Hong Jia, Yunjiang Rao, Zi-Nan Wang, Wei-Li Zhang, Cheng-Xu Yuan, Xiao-Dong Yan, Jin Li, Han Wu, Ye-Yu Zhu, and Fei Peng "142.2km BOTDA based on ultra-long fiber laser with a ring cavity", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89241A (15 October 2013); https://doi.org/10.1117/12.2034578

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