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Proceedings Paper

Absolute distance and velocity measurements by a double integrated heterodyne interferometer
Author(s): A. Chebbour; Christophe Gorecki; Gilbert M. Tribillon
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Paper Abstract

A double integrated interferometer is proposed for absolute distance and velocity measurements with directional discrimination. An injection current-modulated laser diode is used as the wavelength tunable light source. One of the interferometers is used as a reference for systematic calibration. The second one permits the test distance measuring. The calibration enables the compensation of instantaneous fluctuations of the frequency modulation, the output light power drift, the frequency deviation, the refractive index and other external environmental disturbance corrections. The system is used for distance measuring from a few millimeters to 500 mm with a resolution better than 10 micrometers .

Paper Details

Date Published: 15 November 1994
PDF: 11 pages
Proc. SPIE 2248, Optical Measurements and Sensors for the Process Industries, (15 November 1994); doi: 10.1117/12.194319
Show Author Affiliations
A. Chebbour, Lab. d'Optique/Univ. de Franche-Comte (France)
Christophe Gorecki, Lab. d'Optique/Univ. de Franche-Comte (France)
Gilbert M. Tribillon, Lab. d'Optique/Univ. de Franche-Comte (France)


Published in SPIE Proceedings Vol. 2248:
Optical Measurements and Sensors for the Process Industries
Christophe Gorecki; Richard W. T. Preater, Editor(s)

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