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Proceedings Paper

Loss-Compensation Of Intensity-Modulating Fiber-Optic Sensors
Author(s): Glenn Beheim; Donald J Anthan
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Paper Abstract

This report describes a new type of intensity-modulating fiber-optic sensor which has high immunity to the effects of variations in the losses of the fiber-link. A variable-splitting-ratio transducer is used to differentially modulate the intensities of the light which it transmits and reflects. Using a four-fiber optical link, light is impinged onto the transducer from either direction, and, in each case, the transmitted and reflected signals are measured. These four signals are then processed to remove the effects of the fiber and connector losses. Loss-compensated sensors of angular position and displacement are described, and their outputs are shown to be highly stable despite considerable variations in the transmissivities of the fiber-link components.

Paper Details

Date Published: 28 April 1987
PDF: 7 pages
Proc. SPIE 0718, Fiber Optic and Laser Sensors IV, (28 April 1987); doi: 10.1117/12.937525
Show Author Affiliations
Glenn Beheim, National Aeronautics and Space Administration (United States)
Donald J Anthan, Cleveland State University (United States)

Published in SPIE Proceedings Vol. 0718:
Fiber Optic and Laser Sensors IV
Ramon P. DePaula; Eric Udd, Editor(s)

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