Characterization of embedded fiber Bragg grating sensors written in high-birefringent optical fibers subjected to transverse loading

2002 ◽  
Author(s):  
Federico Bosia ◽  
Philippe Giaccari ◽  
Mauro Facchini ◽  
John Botsis ◽  
Hans G. Limberger ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Optical Fibers ◽  
Bragg Grating ◽  
Transverse Loading ◽  
Fiber Bragg Grating Sensors

Characterization of metallic-packaging fiber Bragg grating sensors with coated and bare fibers

2019 ◽  
Vol 58 (6) ◽  
pp. 1426
Author(s):  
Yumin Zhang ◽  
Fanyong Meng ◽  
Yanming Song ◽  
Mingli Dong ◽  
Lianqing Zhu
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors

scholarly journals Characterization of different water/powder ratios of dental gypsum using fiber Bragg grating sensors

2011 ◽  
Vol 30 (5) ◽  
pp. 700-706 ◽  
Author(s):  
Nélia ALBERTO ◽  
Lídia CARVALHO ◽  
Hugo LIMA ◽  
Paulo ANTUNES ◽  
Rogério NOGUEIRA ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors

Broadband Source-Based Interrogation Scheme of Fiber Bragg Grating Sensors for Structural Health Monitoring

2007 ◽  
Vol 347 ◽  
pp. 399-404 ◽  
Author(s):  
Daniele Tosi ◽  
Massimo Olivero ◽  
Guido Perrone
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Bragg Grating ◽  
Health Monitoring ◽  
Low Cost ◽  
Bragg Grating ◽  
Structural Health ◽  
Fiber Bragg Grating Sensors ◽  
Framework Conditions ◽  
Budget Evaluation

In the present work we report on the development of a low cost interrogation system of fiber Bragg grating sensors for structural health monitoring. The developed scheme uses two gratings and a directional coupler as sensing point, and it includes self-compensation of temperature effects. The reading equipment consists of a standard photodiode for telecom applications with custom signal-conditioning electronics. The characterization of multiplexed sensors, carried out in real framework conditions, shows that the system can work in a temperature range of -20÷+40°C, making strain measurements up to at least 320με with an accuracy of ~3% and an acquisition rate of 12 samples/min. Further, a budget evaluation is drawn to asses the feasibility of our interrogation system as a low cost solution to increase the extent of structural health monitoring in funds-limited applications.

scholarly journals Temperature and Consolidation Sensing Near Drinking Water Wells Using Fiber Bragg Grating Sensors

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3572
Author(s):  
Sandra Drusová ◽  
R. Martijn Wagterveld ◽  
Karel J. Keesman ◽  
Herman L. Offerhaus
Keyword(s):  
Drinking Water ◽  
Fiber Bragg Grating ◽  
Optical Fibers ◽  
Bragg Grating ◽  
Soil Layers ◽  
Multiple Sensors ◽  
Fiber Bragg Grating Sensors ◽  
Water Wells ◽  
Potential Use

Drinking water wells require continuous monitoring to prevent groundwater-related issues such as pollution, clogging and overdrafting. In this research, optical fibers with fiber Bragg grating sensors were placed in an aquifer to explore their potential use in long-term well monitoring. Fiber Bragg grating sensors were simultaneously sensitive to consolidation strain and temperature, and these two responses were separated by creating autoregressive consolidation models. Consolidation responses from these multiple sensors were rescaled to obtain pressure distribution along the depth. Pressure and temperature data showed impermeable soil layers and locations where groundwater accumulated. Time development of temperature along the fiber revealed oxidation of minerals and soil layers with varying permeability. Fiber Bragg grating sensors are useful tools to examine subsurface processes near wells and they can show the first signs of clogging.

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