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Proceedings Paper

Optical fiber sensors using vibration wires
Author(s): Maria Qing Feng; Hideyo Suzuki
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Paper Abstract

Experimental research of new optical fiber sensors for monitoring civil infrastructure systems is presented. The proposed optical sensors employ a vibrating wire whose tension can be modulated by external force, strain, or vibration and is translated into the change in the wire vibration frequency. The wire vibration frequency is detected by light sent to and reflected from the wire through an optical fiber cable. Compared to other existing optical fiber sensors which tend to suffer from the lack of reliability and robustness, the proposed sensors have two significant advantages: one is that the sensing head is a vibrating wire (rather than an optical fiber), which can sense a specific physical quantity without interference from miscellaneous effects; the other is that the wire vibration is a well understood physical phenomenon. In fact, with a high level of reliability, its frequency is optically measured and transmitted to recording and other devices through the optical fiber without attenuation or distortion. These advantages make the sensor system simple, reliable and robust, and hence moi readily deployable in civil infrastructure applications.

Paper Details

Date Published: 14 September 1994
PDF: 4 pages
Proc. SPIE 2360, Tenth International Conference on Optical Fibre Sensors, (14 September 1994); doi: 10.1117/12.185044
Show Author Affiliations
Maria Qing Feng, Univ. of California/Irvine (United States)
Hideyo Suzuki, Tokyo Electric Power Co. (Japan)


Published in SPIE Proceedings Vol. 2360:
Tenth International Conference on Optical Fibre Sensors
Brian Culshaw; Julian D. C. Jones, Editor(s)

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