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Photonics
Volume 10
Issue 7
10.3390/photonics10070839
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Communication

Self-Mixing Interferometry Cooperating with Frequency Division Multiplexing for Multiple-Dimensional Displacement Measurement

by
Dongmei Guo
1,
Zhanwu Xie
1,
Qin Yang
1,
Wei Xia
1,*,
Yanguang Yu
2 and
Ming Wang
1
1
School of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, China
2
School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
*
Author to whom correspondence should be addressed.
Photonics 2023, 10(7), 839; https://doi.org/10.3390/photonics10070839
Submission received: 30 June 2023 / Revised: 17 July 2023 / Accepted: 18 July 2023 / Published: 20 July 2023
(This article belongs to the Special Issue Optical Measurement Systems)
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Abstract

In this study, a multiple-dimensional displacement measurement technology is demonstrated by using self-mixing interferometry (SMI) cooperating with a frequency division multiplexing (FDM) technique. The proposed SMI configuration with a single laser generates three modulated light beams with different carrier frequencies. Each beam is incident on a planar grating with its own auto-collimation diffraction angle. The diffracted beams return to the laser cavity and then self-mixing interference occurs. An algorithm based on FDM is developed for multiple-dimensional displacement reconstruction from a single SMI signal. Experiments are conducted to verify the proposed approach. This paper shows an attractive sensing system for multiple-dimensional displacement featuring compact configuration, high resolution and better immunity to environmental disturbances.
Keywords: self-mixing interferometer; frequency division multiplexing; displacement reconstruction; grating interferometry self-mixing interferometer; frequency division multiplexing; displacement reconstruction; grating interferometry

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MDPI and ACS Style

Guo, D.; Xie, Z.; Yang, Q.; Xia, W.; Yu, Y.; Wang, M. Self-Mixing Interferometry Cooperating with Frequency Division Multiplexing for Multiple-Dimensional Displacement Measurement. Photonics 2023, 10, 839. https://doi.org/10.3390/photonics10070839

AMA Style

Guo D, Xie Z, Yang Q, Xia W, Yu Y, Wang M. Self-Mixing Interferometry Cooperating with Frequency Division Multiplexing for Multiple-Dimensional Displacement Measurement. Photonics. 2023; 10(7):839. https://doi.org/10.3390/photonics10070839

Chicago/Turabian Style

Guo, Dongmei, Zhanwu Xie, Qin Yang, Wei Xia, Yanguang Yu, and Ming Wang. 2023. "Self-Mixing Interferometry Cooperating with Frequency Division Multiplexing for Multiple-Dimensional Displacement Measurement" Photonics 10, no. 7: 839. https://doi.org/10.3390/photonics10070839

APA Style

Guo, D., Xie, Z., Yang, Q., Xia, W., Yu, Y., & Wang, M. (2023). Self-Mixing Interferometry Cooperating with Frequency Division Multiplexing for Multiple-Dimensional Displacement Measurement. Photonics, 10(7), 839. https://doi.org/10.3390/photonics10070839

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