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An evaluation method of optical feedback factor using the slope characteristics of reconstructed signal in self-mixing interferometer.

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Title: An evaluation method of optical feedback factor using the slope characteristics of reconstructed signal in self-mixing interferometer.
Authors: Pak, Song-Chol1 (AUTHOR), Ri, Chol-Yong1 (AUTHOR) cy.ri1127@ryongnamsan.edu.kp, Choe, Jin-Hyok1 (AUTHOR), Sok, Chol-Myong1 (AUTHOR), Kim, Kuk-Gang1 (AUTHOR)
Source: Optical Review. Apr2026, Vol. 33 Issue 2, p242-249. 8p.
Subjects: Optical feedback, Laser interferometers, Semiconductor lasers, Signal reconstruction, Signal processing, Phase transitions, Laser based sensors
Abstract: For applications of self-mixing laser sensors, it is very important to measure the optical feedback factor quickly and accurately in the optical feedback regime. In this paper, we propose a method to estimate the optical feedback factor using the slope characteristics of the reconstructed signal near the phase transition in a self-mixing interferometer. The advantage of this method is that it can be applied to various optical feedback levels and the computation time is not affected by the sampling frequency. We show the effectiveness of the proposed method through simulations and experiments with low-cost semiconductor lasers. [ABSTRACT FROM AUTHOR]
Copyright of Optical Review is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Optical+Review%22">Optical Review</searchLink>. Apr2026, Vol. 33 Issue 2, p242-249. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Optical+feedback%22">Optical feedback</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+interferometers%22">Laser interferometers</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductor+lasers%22">Semiconductor lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+reconstruction%22">Signal reconstruction</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+based+sensors%22">Laser based sensors</searchLink>
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  Label: Abstract
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  Data: For applications of self-mixing laser sensors, it is very important to measure the optical feedback factor quickly and accurately in the optical feedback regime. In this paper, we propose a method to estimate the optical feedback factor using the slope characteristics of the reconstructed signal near the phase transition in a self-mixing interferometer. The advantage of this method is that it can be applied to various optical feedback levels and the computation time is not affected by the sampling frequency. We show the effectiveness of the proposed method through simulations and experiments with low-cost semiconductor lasers. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Optical Review is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10043-026-01041-x
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        Text: English
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        Type: general
      – SubjectFull: Laser interferometers
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      – SubjectFull: Semiconductor lasers
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      – SubjectFull: Signal reconstruction
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      – SubjectFull: Phase transitions
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      – SubjectFull: Laser based sensors
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              Text: Apr2026
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