Results 1 to 10 of about 1,459 (159)
Laser‐Self‐Mixing Interferometry for Mechatronics Applications [PDF]
Sensors, 2009 We report on the development of an all-interferometric optomechatronic sensor for the detection of multi-degrees-of-freedom displacements of a remote target.
Gaetano Scamarcio +4 more
doaj +8 more sources
Fringe Detection and Displacement Sensing for Variable Optical Feedback-Based Self-Mixing Interferometry by Using Deep Neural Networks [PDF]
Sensors, 2022 Laser feedback-based self-mixing interferometry (SMI) is a promising technique for displacement sensing. However, commercial deployment of such sensors is being held back due to reduced performance in case of variable optical feedback which invariably ...
Asra Abid Siddiqui +2 more
doaj +2 more sources
Vibration, 2023 Self-mixing interferometry (SMI) is suitable to sense and measure vibrations of amplitudes ranging from picometers to millimeters at frequencies from sub-Hz to MHz’s.
Silvano Donati
doaj +3 more sources
Photonics, 2022 Self-mixing interferometry (SMI) is a promising sensing technology. As well as its compact structure, self-alignment and low implementation cost, it has an important advantage that conventional two-beam interferometry does not have, i.e., SMI signal ...
Bin Liu, Yuxi Ruan, Yanguang Yu
doaj +3 more sources
Displacement Sensing for Laser Self-Mixing Interferometry by Amplitude Modulation and Integral Reconstruction [PDF]
SensorsTo robustly and adaptively reconstruct displacement, we propose the amplitude modulation integral reconstruction method (AM-IRM) for displacement sensing in a self-mixing interferometry (SMI) system.
Yidan Huang, Wenzong Lai, Enguo Chen
doaj +2 more sources
Sub-terahertz feedback interferometry and imaging with emitters in 130 nm BiCMOS technology [PDF]
Scientific Reports, 2023 In this work, we present the effect of self-mixing in compact terahertz emitters implemented in a 130 nm SiGe BiCMOS technology. The devices are based on a differential Colpitts oscillator topology with optimized emission frequency at the fundamental ...
Dmytro B. But +6 more
doaj +2 more sources
Self-Mixing Interferometry for Biomedical Signals Sensing
IEEE Journal of Selected Topics in Quantum Electronics, 2014 Self-mixing interferometry is a noncontact method well suited for measuring a variety of biological signals, like blood pressure wave at wrist and thorax (the optical stethoscope), blood velocity in vein and in external circulation, THz echoes from skin, ear drum vibration, and oculomotor reflex measurements.
Silvano Donati, Michele Nórgia
exaly +4 more sources
Runout Tracking in Electric Motors Using Self-Mixing Interferometry
IEEE/ASME Transactions on Mechatronics, 2014 In this paper, a self-mixing interferometry sensor has been used as a proximity probe to measure possible runout in permanent magnet synchronous motors, for fault diagnosis. A general procedure for the measurement of the 2-D trajectory of the motor shaft is described in detail, including procedures for the characterization of the uncertainty due to the
Reza Atashkhooei +2 more
exaly +4 more sources
Self-Mixing Interferometer for Acoustic Measurements through Vibrometric Calibration [PDF]
SensorsThe Self-Mixing Interformeter (SMI) is a self-aligned optical interferometer which has been used for acoustic wave sensing in air through the acousto-optic effect.
Simon Chanu-Rigaldies +3 more
doaj +2 more sources
Photonics, 2023 We have established a novel method for quadrature signal construction in a semiconductor laser diode self-mixing interferometry system using two photodiodes and a beam splitter with a liquid crystal phase shifter (LCPS).
Yancheng Li +3 more
doaj +1 more source