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

Y Fan, Y Yu, J Xi, JF Chicharo - Applied Optics, 2011 - opg.optica.org
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 …

Real-time algorithm for versatile displacement sensors based on self-mixing interferometry

AL Arriaga, F Bony, T Bosch - IEEE Sensors Journal, 2015 - ieeexplore.ieee.org
This paper presents a general displacement reconstruction algorithm for sensors based on
self-mixing (SM) interferometry suitable to work at different optical feedback conditions. The …

Analysis and implementation of a direct phase unwrapping method for displacement measurement using self-mixing interferometry

A Ehtesham, U Zabit, OD Bernal, G Raja… - IEEE sensors …, 2017 - ieeexplore.ieee.org
Self-mixing or optical feedback interferometry has been widely used for displacement and
velocity measurement applications. For metric information retrieval with<; λ/2 precision …

Detection of multimodal fringes for self-mixing-based vibration measurement

M Usman, U Zabit, OD Bernal, G Raja… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Correct detection of interferometric fringes is necessary to enable high-resolution metric
measurements using laser diode (LD)-based self-mixing (SM) interferometry. For noisy …

Self-mixing laser sensor for large displacements: Signal recovery in the presence of speckle

U Zabit, OD Bernal, T Bosch - IEEE Sensors Journal, 2012 - ieeexplore.ieee.org
Laser self-mixing (SM) sensors are successfully used to measure displacement in the
absence of speckle. However, speckle deforms the SM signal rendering it unusable for …

Speckle-insensitive fringe detection method based on Hilbert transform for self-mixing interferometry

AL Arriaga, F Bony, T Bosch - Applied optics, 2014 - opg.optica.org
A robust phase measurement method to detect self-mixing signals from rough surface
targets is addressed. Using the Hilbert transform to create the analytic signal of the …

Robust detection of non-regular interferometric fringes from a self-mixing displacement sensor using bi-wavelet transform

OD Bernal, HC Seat, U Zabit, F Surre… - IEEE sensors …, 2016 - ieeexplore.ieee.org
An innovative signal processing method based on custom-made wavelet transform (WT) is
presented for robust detection of fringes contained in the interferometric signal of self-mixing …

Denoising of laser self-mixing interference by improved wavelet threshold for high performance of displacement reconstruction

H Liu, Y You, S Li, D He, J Sun, J Wang, D Hou - Photonics, 2023 - mdpi.com
This article proposes an improved wavelet threshold denoising for laser self-mixing
interference signals. The improved wavelet threshold function exhibits smoothness and …

Laser offline measurement method based on self-mixing interference for thin-wall fused deposition modelling component

F Lin, M Ali, Y Tan, Z Su, H Wong - Journal of Manufacturing Processes, 2023 - Elsevier
Abstract Fused Deposition Modelling (FDM) is affected by various factors such as process
parameters during the layer-by-layer printing process, and the parts will have serious …

Adaptive self-mixing vibrometer based on a liquid lens

U Zabit, R Atashkhooei, T Bosch, S Royo, F Bony… - Optics letters, 2010 - opg.optica.org
A self-mixing laser diode vibrometer including an adaptive optical element in the form of a
liquid lens (LL) has been implemented and its benefits demonstrated. The LL arrangement …