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Applied Optics

Applied Optics


  • Vol. 30, Iss. 21 — Jul. 20, 1991
  • pp: 2975–2979

Absolute optical ranging using low coherence interferometry

Bruce L. Danielson and C. Y. Boisrobert  »View Author Affiliations

Applied Optics, Vol. 30, Issue 21, pp. 2975-2979 (1991)

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We describe a method for measuring submicrometer distances with an asymmetric fiber Michelson interferometer having an LED as a source of radiation. By measuring the phase slope of the Fourier components in the frequency domain, it is possible to locate the position of reflections with nanometer precision even in the presence of sample dispersion. The method is compatible with time domain sampling at the Nyquist rate which assures efficiency in data acquisition and processing.

© 1991 Optical Society of America

Original Manuscript: July 16, 1990
Published: July 20, 1991

Bruce L. Danielson and C. Y. Boisrobert, "Absolute optical ranging using low coherence interferometry," Appl. Opt. 30, 2975-2979 (1991)

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