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Proceedings Paper

Etched fiber optic strain sensor
Author(s): Jiangliang Yang; Qing Xiang; Guohua Yu; Dexiu Huang; Yuelong Zhao
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Paper Abstract

Based on the effects of mode-volume mismatch and lateral bending, a new type of optical fiber intensity sensors are presented. These sensors do not require the use of external structures to impose perturbations on fibers. Instead, the topological structures are formed directly onto the fiber cladding. The geometry of the features is defined by thermal engraving and the structures are formed by chemical etching. The etched fiber sensing elements have been fabricated with asymmetric structures and tested as strain sensors. It has been shown in experiment that the responses of the optical fiber strain gauges are linear, repeatable, have a high cyclic endurance and temperature stability and no measurable hysteresis. The etched fiberoptic sensing array embedded in composites and the principle and technology of array sensing signal processing in artificial neural network are also described.

Paper Details

Date Published: 24 September 1996
PDF: 7 pages
Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996);
Show Author Affiliations
Jiangliang Yang, Huazhong Univ. of Science and Technology (China)
Qing Xiang, Huazhong Univ. of Science and Technology (China)
Guohua Yu, Huazhong Univ. of Science and Technology (China)
Dexiu Huang, Huazhong Univ. of Science and Technology (China)
Yuelong Zhao, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 2895:
Fiber Optic Sensors V
Kim D. Bennett; Byoung Yoon Kim; Yanbiao Liao, Editor(s)

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