An estimation method for feedback level factor C of a self-mixing interferometry system

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

doi:10.1117/12.870052

9 November 2010 An estimation method for feedback level factor C of a self-mixing interferometry system

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

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78530E (2010) https://doi.org/10.1117/12.870052
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

This paper presents a fast estimation method for feedback level factor C of a self-mixing interferometry (SMI) system. The reconstruction of a displacement waveform using a SMI signal needs to know a C value. However, it is difficult to maintain a constant C value during the reconstruction process. We study the features of the reconstructed displacement waveforms incorporating different pre-set C values and classify waveforms into two types. Bisection method is introduced in our method for fast estimating C value. The effectiveness of our proposed method has been verified by both simulation and experimental data.

Citation Download Citation

Yuanlong Fan, Yanguang Yu, Jiangtao Xi, and Joe F. Chicharo "An estimation method for feedback level factor C of a self-mixing interferometry system", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78530E (9 November 2010); https://doi.org/10.1117/12.870052

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