Design of a Fiber Optic Pressure Transducer

[+] Author and Article Information
R. H. Pahler, A. S. Roberts

School of Engineering, Old Dominion University, Norfolk, Va.

J. Eng. Ind 99(1), 274-279 (Feb 01, 1977) (6 pages) doi:10.1115/1.3439151 History: Received April 09, 1975; Online July 15, 2010


Performance characteristics of a fiber optic pressure transducer are presented and discussed. The transducer consists of a cylindrical metal housing with a specular reflecting aluminum diaphragm at the distal end and a circular array of fiber optic light guide bundles at the proximal end. The center bundle is connected to a light source with the surrounding bundles carrying reflected light to a photodetector. A change in pressure on the diaphragm produces a differential change in light intensity. An analytic procedure guides the selection of an optimal configuration in order to obtain maximum transducer response.

Copyright © 1977 by ASME
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