Distributed Acoustic Sensing System Based on Broadband Ultra-Weak Fiber Bragg Grating Array

2018 ◽  
Author(s):  
Chengli Li ◽  
Zhihui Mei ◽  
Jianguan Tang ◽  
Kun Yang ◽  
Minghong Yang
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Acoustic Sensing ◽  
Sensing System ◽  
Grating Array ◽  
Distributed Acoustic Sensing

scholarly journals On-line Writing of Fiber Bragg Grating Array on a Two-mode Optical Fiber for Sensing Applications

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1263 ◽  
Author(s):  
Haihu Yu ◽  
Wenjing Gao ◽  
Xin Jiang ◽  
Huiyong Guo ◽  
Shan Jiang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Health Monitoring ◽  
Simultaneous Detection ◽  
Bragg Grating ◽  
Curvature Sensing ◽  
Fiber Sensing ◽  
Sensing System ◽  
Sensing Applications ◽  
On Line ◽  
Grating Array

On-line fabricated fiber Bragg grating (FBG) array and its sensing potentials have attracted plenty of attention in recent years. In this paper, FBG arrays are written on-line on a two-mode fiber, and this two-mode fiber Bragg grating (TM-FBG) is further experimentally investigated for temperature and curvature sensing. The responses of this sensor were characterized by 11.2 pm/°C and −0.21 dB/m−1 for temperature and curvature, respectively. Based on the measurements, a dual-parameter fiber sensing system was developed, which can realize the quasi-distributed, simultaneous detection of temperature and curvature, making it suitable for structural health monitoring or perimeter security.

Online reflectivity measurement of an ultra-weak fiber Bragg grating array

2013 ◽  
Vol 24 (10) ◽  
pp. 105102 ◽  
Author(s):  
Zhihui Luo ◽  
Hongqiao Wen ◽  
Xiaofu Li ◽  
Huiyong Guo
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Reflectivity Measurement ◽  
Grating Array
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