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Proceedings Paper

Frequency-modulation continuous-wave (FMCW) interferometry for thermal-expansion coefficient measurements
Author(s): Rafael A. Escalona Z.; Carlos Rosi
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Paper Abstract

The frequency-modulation continuous wave (FMCW) interferometry is used in combination with a reference technique by measuring the linear thermal expansion coefficients in metallic bars. Unlike other methods, the technique shown provides results in real time with a very good accuracy, and fulfills the requirements of absolute distance and displacement measurement. First results yield uncertainties of about 50 microns over a 0.1 - 10 cm dynamic range.

Paper Details

Date Published: 5 February 1996
PDF: 4 pages
Proc. SPIE 2730, Second Iberoamerican Meeting on Optics, (5 February 1996); doi: 10.1117/12.231109
Show Author Affiliations
Rafael A. Escalona Z., Univ. Simon Bolivar (Venezuela)
Carlos Rosi, Univ. Simon Bolivar (Venezuela)


Published in SPIE Proceedings Vol. 2730:
Second Iberoamerican Meeting on Optics
Daniel Malacara-Hernandez; Sofia E. Acosta-Ortiz; Ramon Rodriguez-Vera; Zacarias Malacara; Arquimedes A. Morales, Editor(s)

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