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Proceedings Paper

Loss-compensation technique using a split-spectrum approach for optical fiber air-gap intensity-based sensors
Author(s): Anbo Wang; Mark S. Miller; Michael F. Gunther; Kent A. Murphy; Richard O. Claus
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Paper Abstract

A self-referencing technique compensating for fiber losses and source fluctuations in air-gap intensity-based optical fiber sensors is described and demonstrated. A resolution of 0.007 micron has been obtained over a measurement range of 0-250 microns for an intensity-based displacement sensor using this referencing technique. The sensor is shown to have minimal sensitivity to fiber bending losses and variations in the LED input power. A theoretical model for evaluation of step-index multimode optical fiber splice is proposed. The performance of the sensor as a displacement sensor agrees well with the theoretical analysis.

Paper Details

Date Published: 5 March 1993
PDF: 10 pages
Proc. SPIE 1795, Fiber Optic and Laser Sensors X, (5 March 1993); doi: 10.1117/12.141268
Show Author Affiliations
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Mark S. Miller, Virginia Polytechnic Institute and State Univ. (United States)
Michael F. Gunther, Virginia Polytechnic Institute and State Univ. (United States)
Kent A. Murphy, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 1795:
Fiber Optic and Laser Sensors X
Eric Udd; Ramon P. DePaula, Editor(s)

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