9 November 2010 An estimation method for feedback level factor C of a self-mixing interferometry system
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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.
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Yuanlong Fan, Yanguang Yu, Jiangtao Xi, 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); doi: 10.1117/12.870052; https://doi.org/10.1117/12.870052
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