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Article

A Novel Method of Spectra Processing for Brillouin Optical Time Domain Reflectometry

1
Perm Federal Research Center, Ural Branch, Russian Academy of Sciences, 614990 Perm, Russia
2
Perm National Research, Polytechnic University, 614990 Perm, Russia
*
Author to whom correspondence should be addressed.
Received: 9 July 2020 / Revised: 7 September 2020 / Accepted: 18 September 2020 / Published: 22 September 2020
(This article belongs to the Special Issue Optical Fibers as a Key Element of Distributed Sensor Systems)
A new method of Brillouin spectra post-processing, which could be applied in modern distributed optical sensors: Brillouin optical time domain analyzers/reflectometers (BOTDA/BOTDR), has been demonstrated. It operates by means of the correlation analysis performed with special technique («backward-correlation»). It does not need any additional data for time or space averaging and operates with the single spectrum only. We have simulated the method accuracy dependence on signal-to-noise ratio (SNR) and other parameters. It is shown that the new method produces better results at low SNRs than conventional technique, based on finding of Brillouin spectrum maximum, do. These results are in a good agreement with the experiment. Finally, we have estimated the performance of the new method for its application in polarization-BOTDA set-up for a polarization maintaining (PM) fiber modal birefringence distributed study. View Full-Text
Keywords: brillouin spectra; distributed fiber optic sensors; digital signal processing; correlation analysis; optical fiber birefringence; BOTDA brillouin spectra; distributed fiber optic sensors; digital signal processing; correlation analysis; optical fiber birefringence; BOTDA
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MDPI and ACS Style

Barkov, F.L.; Konstantinov, Y.A.; Krivosheev, A.I. A Novel Method of Spectra Processing for Brillouin Optical Time Domain Reflectometry. Fibers 2020, 8, 60. https://0-doi-org.brum.beds.ac.uk/10.3390/fib8090060

AMA Style

Barkov FL, Konstantinov YA, Krivosheev AI. A Novel Method of Spectra Processing for Brillouin Optical Time Domain Reflectometry. Fibers. 2020; 8(9):60. https://0-doi-org.brum.beds.ac.uk/10.3390/fib8090060

Chicago/Turabian Style

Barkov, Fedor L., Yuri A. Konstantinov, and Anton I. Krivosheev 2020. "A Novel Method of Spectra Processing for Brillouin Optical Time Domain Reflectometry" Fibers 8, no. 9: 60. https://0-doi-org.brum.beds.ac.uk/10.3390/fib8090060

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