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Improving the measurement performance for a self-mixing interferometry-based displacement sensing system

Journal Article


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Abstract


  • Approaches that are, to our knowledge, novel, are proposed in this paper to improve the accuracy performance

    of self-mixing interferometry (SMI) for displacement measurement. First, the characteristics

    associated with signals observed in SMI systems are studied, based on which a new procedure is proposed

    for achieving accurate estimation of the laser phase. The studies also revealed the reasons for the inherent

    errors associated with the existing SMI-based techniques for displacement measurement. Then,

    this paper presents a new method for estimating the optical feedback level factor (denoted by C) in real

    time. Combining the new algorithms for estimating the laser phase and updating C value, the paper

    finally presents a novel technique for displacement measurement with improved accuracy performance

    in contrast to existing techniques. The proposed technique is verified by both simulation and experimental data.

Publication Date


  • 2011

Citation


  • Y. Fan, Y. Yu, J. Xi & J. F. Chicharo, "Improving the measurement performance for a self-mixing interferometry-based displacement sensing system," Applied Optics, vol. 50, (26) pp. 5064-5072, 2011.

Scopus Eid


  • 2-s2.0-80052680682

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=10966&context=infopapers

Ro Metadata Url


  • http://ro.uow.edu.au/infopapers/3630

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 5064

End Page


  • 5072

Volume


  • 50

Issue


  • 26

Abstract


  • Approaches that are, to our knowledge, novel, are proposed in this paper to improve the accuracy performance

    of self-mixing interferometry (SMI) for displacement measurement. First, the characteristics

    associated with signals observed in SMI systems are studied, based on which a new procedure is proposed

    for achieving accurate estimation of the laser phase. The studies also revealed the reasons for the inherent

    errors associated with the existing SMI-based techniques for displacement measurement. Then,

    this paper presents a new method for estimating the optical feedback level factor (denoted by C) in real

    time. Combining the new algorithms for estimating the laser phase and updating C value, the paper

    finally presents a novel technique for displacement measurement with improved accuracy performance

    in contrast to existing techniques. The proposed technique is verified by both simulation and experimental data.

Publication Date


  • 2011

Citation


  • Y. Fan, Y. Yu, J. Xi & J. F. Chicharo, "Improving the measurement performance for a self-mixing interferometry-based displacement sensing system," Applied Optics, vol. 50, (26) pp. 5064-5072, 2011.

Scopus Eid


  • 2-s2.0-80052680682

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=10966&context=infopapers

Ro Metadata Url


  • http://ro.uow.edu.au/infopapers/3630

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 5064

End Page


  • 5072

Volume


  • 50

Issue


  • 26