Title :
Self-mixing interferometer for speed measurement with sign
Author :
Magnani, A. ; Pesatori, Alessandro ; Norgia, Michele
Author_Institution :
Dipt. di Elettron. e Inf., Politec. di Milano, Milan, Italy
Abstract :
This work describes a novel elaboration of a self-mixing optical interferometer, able to reconstruct the target speed and direction, without using heterodyne detection. The elaboration employs the signal non-linearity in order to recover the speed sign in the frequency domain. The target speed is measured by the signal frequency, while the speed sign is evaluated by the phase of the harmonics in the frequency domain.
Keywords :
heterodyne detection; light interferometers; velocity measurement; frequency domain; heterodyne detection; self-mixing optical interferometer; signal frequency; speed measurement; Frequency measurement; Harmonic analysis; Measurement by laser beam; Modulation; Optical interferometry; Optical sensors; Optical variables measurement; Frequency measurement; Optical interferometry; Optical sensors; Optoelectronic devices; Velocity measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2013 IEEE International
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4673-4621-4
DOI :
10.1109/I2MTC.2013.6555511
