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A Low-Noise Fiber Phase-Sensitive Optical Time-Domain Reflectometer for Seismology Application
- Authors: Alekseev A.E.1, Gorshkov B.G.2, Il’inskii D.A.3, Potapov V.T.1, Simikin D.E.1,4, Taranov M.A.1,4
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Affiliations:
- Fryazino Branch of Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences
- Prokhorov General Physics Institute, Russian Academy of Sciences
- Shirshov Institute of Oceanology, Russian Academy of Sciences
- OOO Petrofibre
- Issue: No 5 (2023)
- Pages: 134-140
- Section: ФИЗИЧЕСКИЕ ПРИБОРЫ ДЛЯ ЭКОЛОГИИ, МЕДИЦИНЫ, БИОЛОГИИ
- URL: https://rjsvd.com/0032-8162/article/view/670424
- DOI: https://doi.org/10.31857/S0032816223050014
- EDN: https://elibrary.ru/ZHMNRT
- ID: 670424
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Abstract
A fiber phase-sensitive optical time-domain reflectometer (a distributed acoustic sensor) with a low-noise output signal in the frequency range of 0.01−1 Hz is proposed for seismology applications. The sensor architecture is based on an unbalanced Mach−Zehnder interferometer, which is used to form a dual-pulse probe signal with required phases of its components and to stabilize the frequency of the laser source in the feedback circuit. The low noise level of the output signal is achieved in the proposed circuit by compensating for the difference in the optical paths of the dual-pulse probe signal fields scattered by different fiber sections. The applicability of the proposed circuit has been experimentally demonstrated by detecting a remote earthquake using a fiber-optic cable located at the bottom of the Black Sea.
About the authors
A. E. Alekseev
Fryazino Branch of Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences
Email: aleksey.e.alekseev@gmail.com
141190, Fryazino, Moscow oblast, Russia
B. G. Gorshkov
Prokhorov General Physics Institute, Russian Academy of Sciences
Email: aleksey.e.alekseev@gmail.com
119991, Moscow, Russia
D. A. Il’inskii
Shirshov Institute of Oceanology, Russian Academy of Sciences
Email: aleksey.e.alekseev@gmail.com
117997, Moscow, Russia
V. T. Potapov
Fryazino Branch of Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences
Email: aleksey.e.alekseev@gmail.com
141190, Fryazino, Moscow oblast, Russia
D. E. Simikin
Fryazino Branch of Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences; OOO Petrofibre
Email: aleksey.e.alekseev@gmail.com
141190, Fryazino, Moscow oblast, Russia; Moscow, Russia
M. A. Taranov
Fryazino Branch of Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences; OOO Petrofibre
Author for correspondence.
Email: aleksey.e.alekseev@gmail.com
141190, Fryazino, Moscow oblast, Russia; Moscow, Russia
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