A displacement reconstruction algorithm used for optical feedback self mixing interferometry system under different feedback levels

Yuanlong Fan; Yanguang Yu; Jiangtao Xi; Joe F. Chicharo; Huiying Ye

doi:10.1117/12.870051

11 November 2010 A displacement reconstruction algorithm used for optical feedback self mixing interferometry system under different feedback levels

Yuanlong Fan, Yanguang Yu, Jiangtao Xi, Joe F. Chicharo, Huiying Ye

Author Affiliations +

Proceedings Volume 7855, Optical Metrology and Inspection for Industrial Applications; 78550L (2010) https://doi.org/10.1117/12.870051
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Displacement information of a moving target can be detected using an optical feedback self-mixing interferometry (OFSMI) system. A sensing signal observed from the OFSMI system is called self-mixing signal (SMS). The paper studies the waveform features of the SMSs and proposes an algorithm for reconstructing the displacement of a moving target. The reconstruction accuracy of the algorithm mainly depends on the locating accuracy for those characteristic points on a SMS. A set of rules for identifying those characteristic points are described in the paper. The proposed algorithm is verified by simulation signals firstly, and then applied on extensive SMSs which are obtained from the experimental set-up. The results show that the displacement of the external moving target can be reconstructed under different feedback levels.

Citation Download Citation

Yuanlong Fan, Yanguang Yu, Jiangtao Xi, Joe F. Chicharo, and Huiying Ye "A displacement reconstruction algorithm used for optical feedback self mixing interferometry system under different feedback levels", Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 78550L (11 November 2010); https://doi.org/10.1117/12.870051

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