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Applied Optics

Applied Optics


  • Vol. 42, Iss. 6 — Feb. 20, 2003
  • pp: 1008–1012

Fringe pattern analysis with a parametric method for measurement of absolute distance by a frequency-modulated continuous optical wave technique

Rabah Mokdad, Bertrand Pécheux, Pierre Pfeiffer, and Patrick Meyrueis  »View Author Affiliations

Applied Optics, Vol. 42, Issue 6, pp. 1008-1012 (2003)

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Interferometry associated with an external cavity laser of long coherence length and broad wavelength tuning range shows promising features for use in measurements of absolute distance. As far as we know, the processing of the interferometric signals has until now been performed by Fourier analysis or fringe counting. Here we report on the use of an autoregressive model to determine fringe pattern frequencies. This concept was applied to an interferometric device fed by a continuously tunable external-cavity laser diode operating at a central wavelength near 1.5 μm. A standard uncertainty of 4 × 10-5 without averaging at a distance of 4.7 m was obtained.

© 2003 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry

Original Manuscript: May 17, 2002
Revised Manuscript: October 17, 2002
Published: February 20, 2003

Rabah Mokdad, Bertrand Pécheux, Pierre Pfeiffer, and Patrick Meyrueis, "Fringe pattern analysis with a parametric method for measurement of absolute distance by a frequency-modulated continuous optical wave technique," Appl. Opt. 42, 1008-1012 (2003)

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