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Proceedings Paper

Signal-to-noise ratio improvement in Brillouin sensing
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Paper 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.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036F (5 October 2009); doi: 10.1117/12.835133
Show Author Affiliations
Nicolas Linze, Univ. of Ottawa (Canada)
Wenhai Li, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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