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Proceedings Paper

Tunable optical fiber vibration mode sensor using two-mode fiber
Author(s): Jonathan A. Greene; Kent A. Murphy; Sridhar Rudraraju; Anbo Wang; Richard O. Claus
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Paper Abstract

Techniques are being investigated to spatially weight the strain sensitivity of a two-mode fiber strain sensor by mechanically altering the shape of the fiber along its length. The goal of this process is to obtain fibers that will be single-mode (V < 2.4) over a well-defined sensing length and dual-mode (2.4 < V < 3.8) over the remaining section of fiber. The single- mode section will be relatively insensitive to applied strain, while the dual-mode section will detect a distributed strain field associated with structural vibration mode shapes. The integrated strain will be over the two-mode section of the fiber, which will change with the changing wavelength of the interrogation beam.

Paper Details

Date Published: 30 December 1993
PDF: 7 pages
Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); doi: 10.1117/12.165914
Show Author Affiliations
Jonathan A. Greene, Fiber and Sensor Technologies, Inc. (United States)
Kent A. Murphy, Virginia Polytechnic Institute and State Univ. (United States)
Sridhar Rudraraju, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2071:
Distributed and Multiplexed Fiber Optic Sensors III
Alan D. Kersey; John P. Dakin, Editor(s)

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