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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 15 — May. 20, 2005
  • pp: 2978–2983

White-light interferometer with dispersion: an accurate fiber-optic sensor for the measurement of distance

Pavel Pavlíček and Gerd Häusler  »View Author Affiliations


Applied Optics, Vol. 44, Issue 15, pp. 2978-2983 (2005)
http://dx.doi.org/10.1364/AO.44.002978


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Abstract

We present a fiber-optical sensor for distance measurement of smooth and rough surfaces that is based on white-light interferometry; the sensor measures the distance from the sample surface to the sensor head. Because white light is used, the measurement is absolute. The measurement uncertainty depends not on the aperture of the optical system but only on the properties of the rough surface and is commonly ∼1 µm. The measurement range is approximately 1 mm. The sensor includes no mechanical moving parts; mechanical movement is replaced by the spectral decomposition of light at the interferometer output. The absence of mechanical moving parts enables a high measuring rate to be reached.

© 2005 Optical Society of America

OCIS Codes
(030.5770) Coherence and statistical optics : Roughness
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6660) Instrumentation, measurement, and metrology : Surface measurements, roughness
(260.2030) Physical optics : Dispersion

History
Original Manuscript: August 30, 2004
Revised Manuscript: January 11, 2005
Manuscript Accepted: January 14, 2005
Published: May 20, 2005

Citation
Pavel Pavlíček and Gerd Häusler, "White-light interferometer with dispersion: an accurate fiber-optic sensor for the measurement of distance," Appl. Opt. 44, 2978-2983 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-15-2978

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