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Photonics
Volume 10
Issue 4
10.3390/photonics10040480
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Communication

All-Fiber Laser Feedback Interferometry for Sequential Sensing of In-Plane and Out-of-Plane Displacements

by
Zhanwu Xie
,
Meng Zhang
,
Jie Li
,
Wei Xia
and
Dongmei Guo
*
School of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Photonics 2023, 10(4), 480; https://doi.org/10.3390/photonics10040480
Submission received: 13 March 2023 / Revised: 14 April 2023 / Accepted: 20 April 2023 / Published: 21 April 2023
(This article belongs to the Special Issue Advanced Photonic Sensing and Measurement)
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Abstract

In this paper, an all-fiber laser feedback interferometer (LFI) with a diffraction grating was developed for sequential measurement of in-plane and out-of-plane displacements without changing the optical arrangement. When the light emitted from an erbium-doped fiber ring laser is incident on a reflection grating at the Littrow angle, the diffracted light will return into the laser cavity along the original path, thus generating laser feedback interference. Experimental results reveal that the all-fiber system could achieve a precision of 40 nm in both in-plane and out-of-plane displacements sensing. Compared with the traditional all-fiber LFI, the proposed sensing system transfers the measuring scale from laser wavelength to grating period, and it has the advantages of good anti-interference performance and reliability.
Keywords: all-fiber system; laser feedback interferometer; diffraction grating; displacements sensing all-fiber system; laser feedback interferometer; diffraction grating; displacements sensing

Share and Cite

MDPI and ACS Style

Xie, Z.; Zhang, M.; Li, J.; Xia, W.; Guo, D. All-Fiber Laser Feedback Interferometry for Sequential Sensing of In-Plane and Out-of-Plane Displacements. Photonics 2023, 10, 480. https://doi.org/10.3390/photonics10040480

AMA Style

Xie Z, Zhang M, Li J, Xia W, Guo D. All-Fiber Laser Feedback Interferometry for Sequential Sensing of In-Plane and Out-of-Plane Displacements. Photonics. 2023; 10(4):480. https://doi.org/10.3390/photonics10040480

Chicago/Turabian Style

Xie, Zhanwu, Meng Zhang, Jie Li, Wei Xia, and Dongmei Guo. 2023. "All-Fiber Laser Feedback Interferometry for Sequential Sensing of In-Plane and Out-of-Plane Displacements" Photonics 10, no. 4: 480. https://doi.org/10.3390/photonics10040480

APA Style

Xie, Z., Zhang, M., Li, J., Xia, W., & Guo, D. (2023). All-Fiber Laser Feedback Interferometry for Sequential Sensing of In-Plane and Out-of-Plane Displacements. Photonics, 10(4), 480. https://doi.org/10.3390/photonics10040480

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