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

Authors

Yuanlong Fan, University of WollongongFollow
Yanguang Yu, University of WollongongFollow
Jiangtao Xi, University of WollongongFollow
Joe F. Chicharo, University of WollongongFollow

RIS ID

35621

Publication Details

Fan, Y., Yu, Y., Xi, J. & Chicharo, J. F. (2010). An estimation method for feedback level factor C of a self-mixing interferometry system. Advanced Sensor Systems and Applications IV (pp. 78530E-1-78530E-7). Bellingham, Washington, USA: SPIE.

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.