A Modification of the Backward Correlation Method for the Brillouin Frequency Shift Accurate Extraction

F. L. Barkov; Барков Ф. Л.; Yu. A. Konstantinov; Константинов Ю. А.

doi:10.31857/S003281622305004X

A Modification of the Backward Correlation Method for the Brillouin Frequency Shift Accurate Extraction

Authors: Barkov F.L.¹, Konstantinov Y.A.²
Affiliations:
1. Perm Federal Research Center, Ural Branch, Russian Academy of Sciences
2. Пермский федеральный исследовательский центр УрО РАН
Issue: No 5 (2023)
Pages: 48-55
Section: ОБЩАЯ ЭКСПЕРИМЕНТАЛЬНАЯ ТЕХНИКА
URL: https://rjsvd.com/0032-8162/article/view/670412
DOI: https://doi.org/10.31857/S003281622305004X
EDN: https://elibrary.ru/ZIMKSH
ID: 670412

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Abstract

An improved method for extracting the Brillouin frequency shift in postprocessing of a given Brillouin gain spectrum is presented. Modification of the method made it possible to expand the boundaries of its applicability to the region of noisy spectra with a signal-to-noise ratio (SNR) below 0 dB. The modified method can be successfully used in distributed fiber-optic sensors operating on the Brillouin scattering principle, especially in long-distance sensing lines.

About the authors

F. L. Barkov

Perm Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: fbarkov@pstu.ru
614990, Perm, Russia

Yu. A. Konstantinov

Пермский федеральный исследовательский центр УрО РАН

Author for correspondence.
Email: fbarkov@pstu.ru
614990, Perm, Russia

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