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Optics and Spectroscopy

, Volume 127, Issue 4, pp 656–663 | Cite as

Influence of the Laser Frequency Drift in Phase-Sensitive Optical Time Domain Reflectometry

  • A. A. ZhirnovEmail author
  • K. V. Stepanov
  • A. O. Chernutsky
  • A. K. Fedorov
  • E. T. Nesterov
  • C. Svelto
  • A. B. Pnev
  • V. E. Karasik
HIGH-PRECISION OPTICAL MEASUREMENTS AND METROLOGY
  • 28 Downloads

Abstract

The influence of the laser frequency drift on the operation of phase-sensitive optical time domain reflectometry (φ-OTDR) systems is considered. Theoretical results based on a new numerical φ-OTDR model demonstrating the influence of the laser frequency instability on a signal are reported. This model is verified based on experimental data. It has been used to calculate the signal-to-noise ratio (SNR) of the system for different parameters of the laser source stability. As a result, quantitative requirements for lasers used in φ-OTDR systems are formulated.

Keywords:

phase-sensitive optical time domain reflectometer laser frequency fluctuation narrow-band laser distributed sensor 

Notes

FUNDING

A theoretical and experimental study of the stability of a laser source was performed by A.A. Zhirnov and K.V. Stepanov and funded by the Russian Foundation for Basic Research, project no. 18-32-00688. A.K. Fedorov was funded by the Russian Foundation for Basic Research, project no. 18-37-20033.

CONFLICT OF INTEREST

The authors declare that they have no conflict of interest.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. A. Zhirnov
    • 1
    Email author
  • K. V. Stepanov
    • 1
  • A. O. Chernutsky
    • 1
  • A. K. Fedorov
    • 2
  • E. T. Nesterov
    • 1
  • C. Svelto
    • 3
  • A. B. Pnev
    • 1
  • V. E. Karasik
    • 1
  1. 1.Bauman Moscow State Technical UniversityMoscowRussia
  2. 2.Russian Quantum Center, Skolkovo ICMoscowRussia
  3. 3.Dipartimento di Elettronica e Informazione del Politecnico di MilanoMilanoItaly

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