A Low-Cost Technique for Simulation and Characterization of Fibre Bragg Grating Sensors in Undergraduate Instructional Laboratories

2014 ◽  
Vol 51 (1) ◽  
pp. 12-26
Author(s):  
Alex Dante ◽  
Felipe Walter Dafico Pfrimer ◽  
Elnatan Chagas Ferreira ◽  
José Antonio Siqueira Dias
Keyword(s):  
Low Cost ◽  
Bragg Grating ◽  
Fibre Bragg Grating

scholarly journals Azobenzene-Based Gel Coated Fibre Bragg Grating Sensor for Moisture Measurement

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammed Moniruzzaman ◽  
John Rock
Keyword(s):  
Low Cost ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Fibre Bragg Grating ◽  
Polymer Gel ◽  
Nondestructive Measurement ◽  
Moisture Sensor ◽  
Water Ingress ◽  
Fibre Bragg Grating Sensor ◽  
Bragg Grating Sensor

A fibre Bragg grating sensor is coated with a novel polymer gel in order to investigate its suitability for nondestructive measurement of moisture in materials that can potentially lose their integrity due to moisture ingress. Absorption and desorption of moisture lead to swelling/shrinkage of an azobenzene-based gel, which induces a strain in the Bragg grating resulting in wavelength shifts. The results demonstrated that the amount of wavelength shift is linearly dependent on the amount of water ingress by the gel. The performance of the proposed optical fibre moisture sensor was found to be repeatable with no detectable hysteresis and has the potential to offer a low-cost route for monitoring moisture content.

Development and characterization of a Fibre Bragg Grating temperature probe for medical Laser Ablation therapy

2014 ◽  
Author(s):  
Davide Polito ◽  
Emiliano Schena ◽  
Paola Saccomandi ◽  
Sergio Silvestri ◽  
Andrea Polimadei ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Medical Laser ◽  
Ablation Therapy ◽  
Temperature Probe

scholarly journals A compact, portable and low cost generic interrogation strain sensor system using an embedded VCSEL, detector and fibre Bragg grating

2012 ◽  
Author(s):  
Graham C. B. Lee ◽  
Bram Van Hoe ◽  
Zhijun Yan ◽  
Oliver Maskery ◽  
Kate Sugden ◽  
...  
Keyword(s):  
Low Cost ◽  
Strain Sensor ◽  
Sensor System ◽  
Bragg Grating ◽  
Fibre Bragg Grating

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.

Characterization of the response of fibre Bragg grating sensors subjected to a two-dimensional strain field

2003 ◽  
Vol 12 (6) ◽  
pp. 925-934 ◽  
Author(s):  
Federico Bosia ◽  
Philippe Giaccari ◽  
John Botsis ◽  
Mauro Facchini ◽  
Hans G Limberger ◽  
...  
Keyword(s):  
Strain Field ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Two Dimensional
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