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Proceedings Paper

Optical inclinometer based on a single long-period fiber grating combined with a large lateral offset
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Paper Abstract

Tilt sensor is becoming more and more popular in many engineering fields. With the development of the sensor, tilt sensor with high sensitivity and directional is required in these fields. A simple, compact and high sensitivity fiber-optic directional tilt angle sensor is proposed and experimentally demonstrated in this paper. This novel structure is based on an asymmetrical in-line M-Z inclinometer, as a result, the structure is very compact. At the same time, the structure is easy to fabricate. Because of the asymmetrical structure, different changes happened to the sensor and the sensor can recognize the tilt direction. The tilt angle is obtained by monitoring the resonant wavelength shift and the tilt direction can be obtained from the redshift or blueshift. This structure got a very high sensitivity of 0.935nm/° in a range from -3° to 3°.

Paper Details

Date Published: 8 October 2015
PDF: 6 pages
Proc. SPIE 9679, AOPC 2015: Optical Fiber Sensors and Applications, 96790V (8 October 2015); doi: 10.1117/12.2199788
Show Author Affiliations
Ming Deng, Chongqing Univ. (China)
Feng-yang Yin, Chongqing Univ. (China)
Lei-lei Shi, Chongqing Univ. (China)
Tao Zhu, Chongqing Univ. (China)

Published in SPIE Proceedings Vol. 9679:
AOPC 2015: Optical Fiber Sensors and Applications
Yanbiao Liao; Weixu Zhang; Desheng Jiang; Wei Wang; Gilberto Brambilla, Editor(s)

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