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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 4 — Feb. 1, 1990
  • pp: 544–547

Fiber optic displacement sensor employing a graded index lens

Patrick J. Murphy and Thomas P. Coursolle  »View Author Affiliations


Applied Optics, Vol. 29, Issue 4, pp. 544-547 (1990)
http://dx.doi.org/10.1364/AO.29.000544


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Abstract

A novel intensity modulated fiber optic displacement sensor based on the relative motion of an optical fiber and a graded index lens is described. The technique allows the use of either single- or multimode optical fibers in either single or dual fiber configurations. Displacement sensitivities of 25 Å have been measured using 50-μm core diam multimode fibers, with a light emitting diode source. Theoretical sensitivities of the order of 0.01 nm are predicted with the use of single-mode fibers.

© 1990 Optical Society of America

History
Original Manuscript: September 16, 1988
Published: February 1, 1990

Citation
Patrick J. Murphy and Thomas P. Coursolle, "Fiber optic displacement sensor employing a graded index lens," Appl. Opt. 29, 544-547 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-4-544

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