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Proceedings Paper

Vibration analysis in simply supported cable using weighted optical fiber sensors
Author(s): Kent A. Murphy; Tuan A. Tran; Marten J. de Vries; Richard O. Claus; Sami F. Masri
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Paper Abstract

This paper discusses a first step in the use of weighted optical fiber sensors to selectively determine the mode shape amplitudes of different vibration modes in a simply supported cable. A weighted fiber sensor has a sensitivity function that varies along the length of the fiber. To date, such weighted sensitivity fibers have been fabricated by either writing spatially chirped refractive index gratings in two-mode elliptical-core fiber or by geometrically tapering single mode or two-mode elliptical core fiber. The output signal from the fiber sensor system is proportional to the weighted integral of strain along the length of the fiber, and subsequent analysis indicates that this yields a measure of only one selected mode.

Paper Details

Date Published: 7 February 1994
PDF: 5 pages
Proc. SPIE 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation, (7 February 1994); doi: 10.1117/12.166860
Show Author Affiliations
Kent A. Murphy, Virginia Polytechnic Institute and State Univ. (United States)
Tuan A. Tran, Virginia Polytechnic Institute and State Univ. (United States)
Marten J. de Vries, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)
Sami F. Masri, Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 2072:
Fiber Optic Physical Sensors in Manufacturing and Transportation
John W. Berthold; Richard O. Claus; Michael A. Marcus; Robert S. Rogowski, Editor(s)

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