23 April 2017 Sweep free BOTDA based on DD-OOFDM channel estimation
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103236E (2017) https://doi.org/10.1117/12.2263438
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
A novel Brillouin optical time-domain analysis (BOTDA) system is demonstrated using intensity-modulated optical orthogonal frequency division multiplexing probe signal and direct detection (IM-DD-OOFDM) for stimulated Brillouin spectrum (SBS) measurement without frequency sweep operation. The SBS is reconstructed by channel estimation algorithm and Brillouin frequency shift (BFS) is located by curve fitting. The IM-DD-OOFDM BOTDA is demonstrated experimentally with 25m spatial resolution over 2 km standard single mode fiber.
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Can Zhao, Jiadi Wu, Hao Wu, Zhiyong Zhao, Yunli Dang, Songnian Fu, Ming Tang, "Sweep free BOTDA based on DD-OOFDM channel estimation", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236E (23 April 2017); doi: 10.1117/12.2263438; https://doi.org/10.1117/12.2263438
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