Signal-to-noise ratio improvement in Brillouin sensing

Nicolas Linze; Wenhai Li; Xiaoyi Bao

doi:10.1117/12.835133

5 October 2009 Signal-to-noise ratio improvement in Brillouin sensing

Nicolas Linze, Wenhai Li, Xiaoyi Bao

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75036F (2009) https://doi.org/10.1117/12.835133
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

The signal-to-noise ratio (SNR) enhancement using a coded pulse in Brillouin Optical Time Domain Analysis (BOTDA) is studied theoretically and experimentally and compared with the one pulse case. This new technique is based on simplex coding and provides a theoretical SNR enhancement of 3.6 dB. We find that the experimental SNR improvement is around 3.8 dB, which is in good accordance with the theory. We also observe that the Differential Pulsewidth Pair - Brillouin Optical Time Domain Analysis (DPP-BOTDA) method can be applied. This allows to combine high spatial and frequency resolutions¹ and higher SNR.

Citation Download Citation

Nicolas Linze, Wenhai Li, and Xiaoyi Bao "Signal-to-noise ratio improvement in Brillouin sensing", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036F (5 October 2009); https://doi.org/10.1117/12.835133

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