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Method for Increasing the Signal-to-Noise Ratio of Rayleigh Back-Scattered Radiation Registered by a Frequency Domain Optical Reflectometer Using Two-Stage Erbium Amplification

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Abstract

Simple measures to improve the signal-to-noise ratio of optical frequency domain reflectometer (OFDR) readings are described. After applying a two-stage optical amplification of the backscattered signal, as well as eliminating the source of spurious reflections, it was possible to increase the signal-to-noise ratio of the frequency domain trace from 8 to 19 dB. This technique can be applied in fiber optic sensors and metrology of fiber optic and integrated optical elements.

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ACKNOWLEDGMENTS

We thank A.I. Krivosheev for fabrication of the passive circuit components and fruitful discussions.

Funding

Section 2 was supported by the Russian Foundation for Basic Research and the Perm Territory (project no. 19-48-590018 r_a, no. AAAA-A20-120031690047-9); Sections 3, 4, and 5 were completed within the framework of State Assignment no. AAAA-A19-119042590085-2.

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Authors and Affiliations

  1. Perm Federal Research Center, Ural Branch, Russian Academy of Sciences, 614990, Perm, Russia

    M. E. Belokrylov, D. Claude, Yu. A. Konstantinov, P. V. Karnaushkin, F. L. Barkov & R. S. Ponomarev

  2. Perm State University, 614990, Perm, Russia

    P. V. Karnaushkin, V. V. Krishtop, D. G. Gilev & R. S. Ponomarev

  3. Perm Research and Production Instrument-Making Company, 614007, Perm, Russia

    K. A. Ovchinnikov, V. V. Krishtop & D. G. Gilev

  4. Perm National Research Polytechnic University, 614990, Perm, Russia

    V. V. Krishtop

Authors
  1. M. E. Belokrylov
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  2. D. Claude
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  3. Yu. A. Konstantinov
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  4. P. V. Karnaushkin
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  5. K. A. Ovchinnikov
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  6. V. V. Krishtop
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  7. D. G. Gilev
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  8. F. L. Barkov
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  9. R. S. Ponomarev
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Corresponding author

Correspondence to M. E. Belokrylov.

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The authors declare that they have no conflicts of interest.

Additional information

International conference “Optical Reflectometry, Metrology, & Sensing 2023,ˮ Russia, Perm, May 24–26, 2023.

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Belokrylov, M.E., Claude, D., Konstantinov, Y.A. et al. Method for Increasing the Signal-to-Noise Ratio of Rayleigh Back-Scattered Radiation Registered by a Frequency Domain Optical Reflectometer Using Two-Stage Erbium Amplification. Instrum Exp Tech 66, 761–768 (2023). https://doi.org/10.1134/S0020441223050172

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