Optimizing the signal-to-noise ratio for direct-detection BOTDA

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Sheng Wang
2019
Article de conférence

Résumé

The signal-to-noise ratio (SNR) of the measurement for direct-detection Brillouin optical time-domain analyzers is modelled and experimentally validated, with and without the use of optical pre-amplification. Results indicate that preamplification associated with a good-quality photo-detector improves considerably the actual SNR, with only 1.5 dB penalty compared to the ideal shot noise limit.

Source officielle

https://infoscience.epfl.ch/record/270075?ln=fr

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Optimizing the signal-to-noise ratio for direct-detection BOTDA

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