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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 7 — Mar. 1, 1999
  • pp: 1103–1109

Development of a differential optical-fiber displacement sensor

Fukuo Suganuma, Atsushi Shimamoto, and Kohichi Tanaka  »View Author Affiliations


Applied Optics, Vol. 38, Issue 7, pp. 1103-1109 (1999)
http://dx.doi.org/10.1364/AO.38.001103


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Abstract

A novel optical-fiber displacement sensor is proposed and demonstrated. It consists of a laser diode light source, an optical-fiber probe, and two photodetectors. The bundling of the probe is sectioned into three parts: a centrally positioned fiber in the bundle for illumination, the first-neighbor fibers for receiving (part I), and the remaining fibers for receiving (part II). The ratio of the difference to the sum of the output signals from the part I and the part II receiving fibers can eliminate the variation in the sensitivity of the sensor to reflectivity of the target. The performance of the sensor is geometrically analyzed. The working distance is determined by the distance from the centered illuminating fiber to the boundary between the part I and the part II receiving fibers. The experimental measurements made with three different reflectivity targets confirm that the sensor performance is independent of the three reflectivities, as predicted by the analysis.

© 1999 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2390) Fiber optics and optical communications : Fiber optics, infrared

History
Original Manuscript: August 11, 1998
Revised Manuscript: November 30, 1998
Published: March 1, 1999

Citation
Fukuo Suganuma, Atsushi Shimamoto, and Kohichi Tanaka, "Development of a differential optical-fiber displacement sensor," Appl. Opt. 38, 1103-1109 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-7-1103

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