Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81333
Title: Two-dimensional vector accelerometer based on Bragg gratings inscribed in a multi-core fiber
Authors: Cui, JX 
Liu, ZY 
Gunawardena, DS 
Zhao, ZY 
Tam, HY 
Issue Date: 2019
Publisher: Optical Society of America
Source: Optics express, 22 July 2019, v. 27, no. 15, p. 20848-20856 How to cite?
Journal: Optics express 
Abstract: We propose and demonstrate a novel orientation-sensitive two-dimensional accelerometer based on fiber Bragg gratings inscribed in a multi-core fiber. Through monitoring of the wavelength shifts of three of the seven cores, including the central core and two outer cores which are not aligned in a straight line, information on vibration orientation as well as acceleration can be obtained simultaneously. Performance of the proposed accelerometer in terms of frequency, acceleration and vibration orientation are experimentally investigated. The designed two-dimensional accelerometer is capable of obtaining all these three parameters simultaneously. A sensitivity which is strongly dependent on the orientation is achieved, with a best orientation accuracy of 0.127 degrees over a range of 0-180 degrees. Moreover, the resonance frequency and the sensitivity can be optimized through adjusting the length and weight of the free-fiber. The ease of fabrication as well as the versatility of the proposed sensor makes it potentially useful in dynamic monitoring for industrial applications.
URI: http://hdl.handle.net/10397/81333
EISSN: 1094-4087
DOI: 10.1364/OE.27.020848
Rights: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (https://www.osapublishing.org/library/license_v1.cfm#VOR-OA)
Journal © 2019
The following publication J. Cui, Z. Liu, D. Gunawardena, Z. Zhao, and H. Tam, "Two-dimensional vector accelerometer based on Bragg gratings inscribed in a multi-core fiber," Opt. Express 27, 20848-20856 (2019) is available at https://dx.doi.org/10.1364/OE.27.020848
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