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Proceedings Paper

Interferential Wavelengths Comparison With Real-Time Signal Processing
Author(s): P. Bouchareine; B. Rougie
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Paper Abstract

The two wave field widened interferometer of "Institut National de Metrologie" (I.N.M.) is controlled by Micral R2E microprocessor (Intel 8008) for data acquisition and real time signal processing. Two different methods are described, one involving a servo controlled step by step scanning of the path difference, in the second one this scanning is approximately linear with time, and the microprocessor samples interferometric signal at a high rate. In both methods a real time signal processing is achieved. We compare the results of phase measurements by the two methods ; the reproducibility may be in both cases within a few 10-4 of a fringe.

Paper Details

Date Published: 20 May 1980
PDF: 6 pages
Proc. SPIE 0210, 2nd European Congress on Optics Applied to Metrology, (20 May 1980); doi: 10.1117/12.958314
Show Author Affiliations
P. Bouchareine, Institut National de Metrologie (France)
B. Rougie, Institut National de Metrologie (France)

Published in SPIE Proceedings Vol. 0210:
2nd European Congress on Optics Applied to Metrology
Michel H. Grosmann; Patrick Meyrueis, Editor(s)

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