One kind of fiber Bragg grating displacement sensor using micro-elastic spring

Xuefeng Zhao; Gangbing Song; Michael Fernandez; Jinping Ou

doi:10.1117/12.841293

20 October 2009 One kind of fiber Bragg grating displacement sensor using micro-elastic spring

Xuefeng Zhao, Gangbing Song, Michael Fernandez, Jinping Ou

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74932X (2009) https://doi.org/10.1117/12.841293
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

A kind of fiber Bragg grating displacement sensor using micro-elastic spring is proposed and studied in this paper. A type of micro-elastic spring was used as a displacement-wavelength conversion component. According to the sensor package design established, one micro FBG displacement sensor with outer diameter of 1.3mm was constructed. Tests were designed and conducted to study the displacement and temperature sensitivity of the sensor. Results show that there are good linear relationships between wavelength and displacement, as well as between wavelength and temperature. The displacement coefficient and temperature coefficient are 10.97pm/mm, and 21.38pm/°C, respectively. To obtain smaller displacement resolution of the sensor, one kind of sensitivity inhenced FBG displacement sensor is proposed and studied, the displacement coefficient is 110pm/mm.

Citation Download Citation

Xuefeng Zhao, Gangbing Song, Michael Fernandez, and Jinping Ou "One kind of fiber Bragg grating displacement sensor using micro-elastic spring", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74932X (20 October 2009); https://doi.org/10.1117/12.841293

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