首页|Nonlinear correction in the frequency scanning interferometry system by a fiber resonator

Nonlinear correction in the frequency scanning interferometry system by a fiber resonator

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  • NSTL
  • Elsevier
? 2021 Elsevier B.V.The tuning nonlinearity of a laser is the main source that will deteriorate the spatial resolution in a frequency scanning interferometry (FSI) system. In the present study, a nonlinear error correction method based on a fiber resonator is proposed. Equal-spacing frequency sampling is achieved by resampling the raw signal at the position of the peaks of the fiber resonator signal. The effectiveness of the method is evaluated by checking the spectrum of a 2-m Michelson or Mach–Zehnder interferometer (MZI) and its residual nonlinearity in the FSI scheme. The distributed strain measurement is also performed, which further verified the usefulness of the method in the tuning nonlinearity of the laser in FSI system.

Optical fiber measurementsRayleigh scatteringStrain measurement

Xu H.、Wu Z.、Zhao S.、Suo L.

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School of Aeronautics and Astronautics Faculty of Vehicle Engineering and Mechanics State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology

School of Optoelectronic Engineering and Instrumentation Science Dalian University of Technology

School of Mechanical Engineering Dalian University of Technology

2022

10.1016/j.optcom.2021.127737

Optics Communications

Optics Communications

EISCI
ISSN：0030-4018
年,卷(期)：2022.508
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