@inproceedings{b64859bf5be34feab1510f87b3356fc4,
title = "Omnidirectional vibration sensor based on fiber Bragg gratings in a seven-core fiber",
abstract = "We report an orientation-sensitive omnidirectional vibration sensor based on fiber Bragg gratings (FBGs) inscribed in a seven-core optical fiber. By monitoring the central wavelength shifts of three FBGs in the central core and two outer cores, orientation information in 0-180° range as well as the acceleration value are obtained. The performance of the vibration sensor is characterized at different frequencies, orientations and accelerations. Comparison results for orientation discrimination using different groups of outer cores are investigated to enhance the reliability of the vibration sensor. The experimental results demonstrate an accuracy as high as 0.01° for orientation discrimination. The compact size and simple structure make the vibration sensor potentially superior in industrial applications where precise monitoring of the orientation is a necessity.",
keywords = "Fiber Bragg grating, Multi-core fiber, Orientation discrimination, Vibration sensor",
author = "Jingxian Cui and Zhengyong Liu and Gunawardena, {Dinusha Serandi} and Tam, {Hwa Yaw}",
note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; 7th European Workshop on Optical Fibre Sensors, EWOFS 2019 ; Conference date: 01-10-2019 Through 04-10-2019",
year = "2019",
doi = "10.1117/12.2538864",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Kyriacos Kalli and Gilberto Brambilla and Sinead O'Keeffe",
booktitle = "Seventh European Workshop on Optical Fibre Sensors",
address = "United States",
}