Abstract

We demonstrated an all-fiber 2-D inclinometer based on fiber Bragg gratings with the capability of measuring the azimuthal angle and the inclination angle, simultaneously. The sensor performance is theoretically optimized and experimentally investigated. Excellent agreement between simulated and experimental results was achieved. Through detection of the wavelength shifts of the fiber Bragg gratings inscribed in the central core and two outer cores of a seven-core multi-core fiber, minimum error of 0.0056° for the azimuthal angle, and 0.025° for the inclination angle, were obtained. The detection range of the former ranges from 0 to 360°, while the latter ranges from 0 to 90°. The fiber Bragg grating in the central core can be used for temperature-compensation. The proposed fiber sensor is easy to fabricate and robust, increasing its potential in practical applications.

Two-dimensional vector bending sensor based on seven-core fiber Bragg gratings

Maoxiang Hou, Kaiming Yang, Jun He, Xizhen Xu, Shuai Ju, Kuikui Guo, and Yiping Wang
Opt. Express 26(18) 23770-23781 (2018)

Two-dimensional vector accelerometer based on Bragg gratings inscribed in a multi-core fiber

Jingxian Cui, Zhengyong Liu, Dinusha Serandi Gunawardena, Zhiyong Zhao, and Hwa-Yaw Tam
Opt. Express 27(15) 20848-20856 (2019)

Supermode Bragg grating inscribed in a strongly coupled seven-core fiber and its responses to temperature and curvature

Xian Dong, You-Hang Xie, Jia-Le Ou, Chuang Wu, Jie Li, and Bai-Ou Guan
Opt. Express 31(2) 3258-3268 (2023)

Two-dimensional vector accelerometer based on orthogonal Bragg gratings inscribed in a standard single-mode fiber cladding

Fengyi Chen, Xingyong Li, Ruohui Wang, and Xueguang Qiao
Opt. Lett. 46(12) 2992-2995 (2021)

Temperature-insensitive optical tilt sensor based on a single eccentric-core fiber Bragg grating

Di Zheng, Zhuyang Cai, Ignazio Floris, Javier Madrigal, Wei Pan, Xihua Zou, and Salvador Sales
Opt. Lett. 44(22) 5570-5573 (2019)