Hybrid optical fiber sensor system based on fiber Bragg gratings and plastic optical fibers for health monitoring of engineering structures

2006 ◽  
Author(s):  
K. S. C. Kuang ◽  
M. Maalej ◽  
S. T. Quek
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Health Monitoring ◽  
Optical Fiber Sensor ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Sensor System ◽  
Fiber Sensor ◽  
Engineering Structures ◽  
Plastic Optical Fibers

scholarly journals Detection of Mercury Ions in Water using a Plastic Optical Fiber Sensor

2021 ◽  
Vol 4 (2) ◽  
pp. 95
Author(s):  
Willy Hardiantho ◽  
Bidayatul Arminah ◽  
Arifin Arifin
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Output Voltage ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Mercury Ions ◽  
Large Power ◽  
Spiral Spring ◽  
Measurement Results ◽  
Plastic Optical Fibers

Research has been carried out on the detection of mercury ions in water using plastic optical fibers. Detection of mercury ions is done by immersing the optical fiber sensor in the HgCl2 solution, where both ends of the sensor are connected to an LED and a phototransistor. LED as a light source will emit light along with the optical fiber which will be received by the phototransistor. The optical light received by the phototransistor is converted into an electric voltage and given a gain in the differential amplifier. The output voltage in the form of an analog signal is converted into a digital signal on the Arduino UNO so that it can be read on a computer. The optical fiber as a sensor is made in two configurations, namely U configuration and spiral spring configuration. The jacket and the fiber optic cladding are peeled off and then covered with chitosan. Each configuration will be given a variation of the curve to analyze the characteristics of the sensor. The curvature can cause a large power loss resulting in attenuation of the light intensity of the LED received by the phototransistor. Apart from the effect of indentation on optical fibers, the output voltage measurement results are also influenced by the level of HgCl2 concentration. The best measurement results for mercury ion sensors in water using plastic optical fibers are obtained in a spiral spring configuration with a chitosan cladding with a variation of 6 coils which has a sensitivity of 104.065 mV/ppm.

Catalyst-type-an optical fiber sensor for hydrogen leakage based on fiber Bragg gratings

2015 ◽  
Vol 217 ◽  
pp. 151-157 ◽  
Author(s):  
Satoshi Masuzawa ◽  
Shinji Okazaki ◽  
Yusuke Maru ◽  
Tadahito Mizutani
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Sensor ◽  
Catalyst Type

A Multiplexed Optical Fiber Sensor System For Distributed Measurement Of Structural Strains

1997 ◽  
Vol 503 ◽  
Author(s):  
F. Ansari ◽  
Z. Chen ◽  
Q. Li
Keyword(s):  
Optical Fiber ◽  
Optical Switch ◽  
Optical Fiber Sensor ◽  
Fiber Material ◽  
Smart Structure ◽  
Sensor System ◽  
Fiber Sensor ◽  
Fiber Sensors ◽  
Large Structures ◽  
Distributed Measurement

ABSTRACTStructurally integrated optical fiber sensors form the basis for smart structure technology. Over the past decade a variety of sensor configurations have been developed for measurement of strains and deformations in structures. Strains and deformations alter the refractive index and the geometry of the optical fiber material. These changes perturb the intensity, phase, and polarization of the light-wave propagating along the probing fiber. The optical perturbations are detected for the determination of strain. The research presented here describes the development of a new optical fiber sensor system for measurement of structural strains based on white light interferometry. An optical switch provides for multiplexing of strain signals from various locations in the structure. Redundant Bragg grating type fiber optic sensors as well as strain gauges were employed for comparison and verification of strain signals as measured by the new system. The system provides capability for distributed sensing of strains in large structures.

Polymer Optical Fiber Sensor System for Multi Plane Bending Angle Assessment

2020 ◽  
Vol 20 (5) ◽  
pp. 2518-2525
Author(s):  
Arnaldo G. Leal-Junior ◽  
Leticia M. Avellar ◽  
Camilo A. R. Diaz ◽  
Maria Jose Pontes ◽  
Anselmo Frizera
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Sensor System ◽  
Fiber Sensor ◽  
Polymer Optical Fiber ◽  
Bending Angle ◽  
Plane Bending
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