Self-Mixing Interferometry for Biomedical Signals Sensing

Author

Donati, Silvano ; Norgia, Michele

Author_Institution

Dept. of Ind. & Inf. Eng., Univ. of Pavia, Pavia, Italy

Volume

20

Issue

2

fYear

2014

fDate

March-April 2014

Firstpage

104

Lastpage

111

Abstract

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. In this review, after presenting the underlying theory and the main developments of self-mixing, we analyze the applications to biosignal measurement reported so far, and illustrate potentialities and perspectives of the technique.

Keywords

blood pressure measurement; blood vessels; ear; eye; light interferometry; skin; vibrations; THz echoes; biological signal; biomedical signal sensing; biosignal measurement; blood pressure wave; blood velocity; ear drum vibration; external circulation; noncontact method; oculomotor reflex measurement; optical stethoscope; self-mixing interferometry; skin; thorax; vein; wrist; Couplings; Displacement measurement; Frequency modulation; Optical interferometry; Optical switches; Optical variables measurement; Surface emitting lasers; Optical interferometry; laser diodes; optical feedback; self-mixing interferometry;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2013.2270279

Filename

6555894