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

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.


Published in:
Proc. SPIE, 11199, 111992C
Presented at:
Seventh European Workshop on Optical Fibre Sensors, Limassol, Cyprus, October 1-4, 2019
Year:
Aug 28 2019
Publisher:
SPIE
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Laboratories:




 Record created 2019-09-04, last modified 2019-09-05

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