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

Composite plate drop test using a 16-channel fibre Bragg grating strain sensor system

1998 ◽  
Author(s):  
Geir B. Havsgard ◽  
Karianne Pran ◽  
Sverre Knudsen ◽  
P. O. Baalerud ◽  
Gunnar Wang ◽  
...  
Keyword(s):  
Composite Plate ◽  
Strain Sensor ◽  
Drop Test ◽  
Sensor System ◽  
Bragg Grating ◽  
Fibre Bragg Grating

SENSITIVITY MEASUREMENT OF FIBRE BRAGG GRATING SENSOR

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Suzairi Daud ◽  
Muhammad Safwan Abd Aziz ◽  
Kashif Tufail Chaudhary ◽  
Mahdi Bahadoran ◽  
Jalil Ali
Keyword(s):  
Tunable Laser ◽  
Sensor System ◽  
Laser Source ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Fibre Bragg Grating ◽  
Sensor Head ◽  
Fibre Bragg Grating Sensor ◽  
Pass Through ◽  
Bragg Grating Sensor

A practical pass-through type fibre Bragg grating (FBG) temperature sensor system have been designed, developed, simulated, and experimentally investigated. The performance of FBG was evaluated in harsh environments exposed under direct sunlight, rain, and wind. The sensor system designed directly focused with convex and hand lens. The temperature of FBG’s sensor head been measured. The broadband laser source was launched into the system using tunable laser source (TLS) and both transmission and reflection spectra of FBG sensor were measured by optical spectrum analyzer (OSA). Results shows that the Bragg wavelength shift,  increased proportionally with the temperature changes. The sensitivity of FBG were recorded at 0.0100 and 0.0132 nm °C-1 for the systems where convex and hand lens applied to the FBG’s sensor head respectively, while the sensitivity of 0.0118 nm °C-1 measured for the system without any focusing element applied.

Improved Accuracy of a Quasi-distributed Strain Sensor System by Using Fiber Bragg Grating Spectrum Restoration

2011 ◽  
Vol 61 (8) ◽  
pp. 750-754
Author(s):  
Gyoung-A KIM ◽  
 Jae-Soon YOON ◽  
Se-Jong BAIK ◽  
Kiegon IM*
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Sensor ◽  
Sensor System ◽  
Bragg Grating ◽  
Improved Accuracy ◽  
Distributed Strain

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.

scholarly journals A low-cost multimode fiber Bragg grating sensor system

2005 ◽  
Author(s):  
Tongyu Liu ◽  
Daorui Wang ◽  
Rasool Raenaei ◽  
Xianfeng Chen ◽  
Lin Zhang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Low Cost ◽  
Fiber Bragg Grating Sensor ◽  
Sensor System ◽  
Bragg Grating ◽  
Multimode Fiber ◽  
Bragg Grating Sensor
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