Self-mixing interference displacement measurement under very weak feedback regime based on integral reconstruction method

Wang, Xiufang; Yuan, Ye; Sun, Lihua; Gao, Bingkun; Chen, Peng

doi:10.1016/j.optcom.2019.04.050

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…The correct window function is based on adopting the median of the derivative of the SMI signal [20], [22]. Fig.…”

Section: (B)mentioning

confidence: 99%

“…Finally, several groups of experiments are conducted at different sampling rates (from 20 kHz to 100 kHz) with an interval of 20 kHz to compare the computing times of the proposed LMD method, the MHT method [11], the integral reconstruction method [20] and the PUM method [18]. For comparison, the harmonic vibration experimental parameters are set as follows: 2 µm peak-to-peak amplitude and 5 Hz frequency.…”

Section: Experimental Validationsmentioning

confidence: 99%

“…Huang et al proposed a dominant harmonic order determination method to reconstruct external target vibration [19]; however, it can measure sinusoidal vibration only. Wang et al proposed an integral reconstruction method for displacement measurements, and the relative error was less than 3.2% [20]. However, this method can be used under the very weak feedback regime only.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vibration Measurement Based on the Local Maximum Detection Algorithm for Laser Self-Mixing Interferometry

et al. 2020

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A novel laser self-mixing interferometry vibration measurement algorithm based on the local maximum detection technique is proposed, that can reconstruct micro vibrations rapidly and easily. In this article, the principles of the local maximum detection algorithm are analyzed in detail, and the process of solving the window function is emphasized. The major advantage of the method is that it does not involve any complicated calculations and removes the need for optical/electromechanical components. The validity of the presented method is confirmed by means of simulated signals and demonstrated via several experiments for harmonic and aleatory motion.

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“…The correct window function is based on adopting the median of the derivative of the SMI signal [20], [22]. Fig.…”

Section: (B)mentioning

confidence: 99%

Section: Experimental Validationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vibration Measurement Based on the Local Maximum Detection Algorithm for Laser Self-Mixing Interferometry

et al. 2020

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“…In recent years, the application of laser self-mixing interferometry in micro-displacement measurement has gained significant attention [1][2][3][4][5]. Laser self-mixing interferometry offers several advantages over traditional micro-displacement measurement techniques, including no optical interferometer external to the source, no external photodetector, noncontact operation, high sensitivity, high precision, environmental insensitivity, and high resolution [6][7][8][9][10][11]. As a result, laser self-mixing interferometry has emerged as a prominent research area in micro-displacement measurement [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Denoising of Laser Self-Mixing Interference by Improved Wavelet Threshold for High Performance of Displacement Reconstruction

Liu,

You,

et al. 2023

Photonics

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This article proposes an improved wavelet threshold denoising for laser self-mixing interference signals. The improved wavelet threshold function exhibits smoothness and continuity near the threshold. By replacing hard or soft wavelet threshold with the improved wavelet threshold, it can eliminate the generation of fake self-mixing interference peaks due to local oscillation induced by hard wavelet threshold, as well as the loss of self-mixing interference peaks due to over-smoothness induced by the soft wavelet threshold. Compared with hard and soft wavelet threshold denoising, theoretical simulations and experimental results demonstrate that the displacement of vibrations are well reconstructed based on the improved wavelet threshold denoising.

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“…Fan and Y. Yu et al [25]. Elsewhere, an integral reconstruction method was proposed by X. Wang and Y. Yuan et al [26]. Micro-vibrations can be reconstructed quickly and easily using this kind of method; however, a high-quality SMI signal is required, and reverse point judgement will become difficult when the vibration signal contains complex frequency components.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Quadrature Signal Construction in a Semiconductor Self-Mixing Interferometry System Using a Liquid Crystal Phase Shifter

Li,

Peng,

Shen

et al. 2023

Photonics

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We have established a novel method for quadrature signal construction in a semiconductor laser diode self-mixing interferometry system using two photodiodes and a beam splitter with a liquid crystal phase shifter (LCPS). This method entails placing an LCPS between the photodiode and the beam splitter so that another phase shift self-mixing signal can be obtained. Then, an arctangent phase algorithm can be used to demodulate the pair of quadrature signals to reconstruct the vibration information of the target object. This method simplifies the self-mixing signal demodulation process and the reconstruction of vibration information. Our experimental results demonstrate the feasibility of using self-mixing phase shifter detection for self-mixing optical measurements. The work illustrates a sort of efficient and referable novel design guidance model which supports the quadrature signals construction in a self-mixing interferometer based on a semiconductor laser diode.

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Self-mixing interference displacement measurement under very weak feedback regime based on integral reconstruction method

Cited by 9 publications

References 10 publications

Vibration Measurement Based on the Local Maximum Detection Algorithm for Laser Self-Mixing Interferometry

Vibration Measurement Based on the Local Maximum Detection Algorithm for Laser Self-Mixing Interferometry

Denoising of Laser Self-Mixing Interference by Improved Wavelet Threshold for High Performance of Displacement Reconstruction

A Novel Method for Quadrature Signal Construction in a Semiconductor Self-Mixing Interferometry System Using a Liquid Crystal Phase Shifter

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