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

Ming Deng; Feng-yang Yin; Lei-lei Shi; Tao Zhu

doi:10.1117/12.2199788

8 October 2015 Optical inclinometer based on a single long-period fiber grating combined with a large lateral offset

Ming Deng, Feng-yang Yin, Lei-lei Shi, Tao Zhu

Proceedings Volume 9679, AOPC 2015: Optical Fiber Sensors and Applications; 96790V (2015) https://doi.org/10.1117/12.2199788
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

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°.

Citation Download Citation

Ming Deng, Feng-yang Yin, Lei-lei Shi, and Tao Zhu "Optical inclinometer based on a single long-period fiber grating combined with a large lateral offset", Proc. SPIE 9679, AOPC 2015: Optical Fiber Sensors and Applications, 96790V (8 October 2015); https://doi.org/10.1117/12.2199788

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