scholarly journals Optical Fiber Sensor for Heavy Chemical Detection: An Overview

2021 ◽  
Vol 2075 (1) ◽  
pp. 012010
Author(s):  
Nurul Athirah Mohamad Abdul Ghafar ◽  
Arni Munira Markom ◽  
Marni Azira Markom ◽  
Ahmad Razif Muhammad
Keyword(s):  
Optical Fiber ◽  
Electromagnetic Interference ◽  
Low Cost ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Electrochemical Analysis ◽  
Detection Methods ◽  
Fiber Sensor ◽  
Sensor Technology ◽  
Compact Size

Abstract Heavy metal contaminations such as mercury, lead, arsenic, cadmium, and zinc are becoming more serious and have become a hazard to human health. Due to their non-biodegradable nature, they can easily accumulate in the environment and cause toxicity even at low concentrations. Therefore, detecting the presence of these metal ions requires a highly sensitive sensing method. Traditional detection methods, such as electrochemical analysis, require complicated sample preparation, are costly, and typically require a lengthy measurement period. These days, optical fiber sensors have been acknowledged due to their unique characteristics such as compact size, high sensitivity, low cost, high flexibility, and immunity to electromagnetic interference. An overview of an optical fiber sensor technology for heavy chemical measurement is discussed in this paper. The sensing mechanisms are summarized, as well as the chemical water quality parameters and sensitivities.

DESIGN AND FABRICATION OF A NOVEL NONCONTACT VIBRATION SENSOR USING INCLINED-CUT OPTICAL FIBER

2008 ◽  
Vol 22 (11) ◽  
pp. 1177-1182
Author(s):  
KYONG-WOO KIM ◽  
WOO-SEONG CHE ◽  
HYU-SANG KWON
Keyword(s):  
Optical Fiber ◽  
Low Cost ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Intensity Modulation ◽  
Vibration Sensor ◽  
Fiber Sensor ◽  
Electric Signal ◽  
Modulation Type ◽  
Low Sensitivity

This optical fiber sensors are being widely used alternative to conventional sensors in various applications because of small size, relatively light weight, high sensitivity and wide bandwidth. Also it has immunity to electromagnetic interferences, because of their dielectric, glass, or plastic nature, they are usually small and light, and they allow remote electric signal opto-electronic conversion and processing. In various uses of optical fiber, intensity modulation type sensor due to misalignment has practical usefulness because it can be realized in ease with low cost and simple structure. To overcome low sensitivity problem in intensity modulation type optical fiber sensor, inclined-cut optical fiber is considered here. Based on optical geometry, the inclined-cut optical fiber sensor is designed and fabricated. The experiments are carried out to evaluate sensor performance. The optical fiber sensor developed in this paper has sufficient precisions and therefore it is available to measure the vibration without contact.

scholarly journals Whispering Gallery Mode Based Optical Fiber Sensor for Measuring Concentration of Salt Solution

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Chia-Chin Chiang ◽  
Jian-Cin Chao
Keyword(s):  
Optical Fiber ◽  
Mass Production ◽  
Low Cost ◽  
Optical Fiber Sensor ◽  
Whispering Gallery Mode ◽  
Solution Concentration ◽  
Fiber Sensor ◽  
Average Sensitivity ◽  
Whispering Gallery ◽  
The Right

An optical fiber solution-concentration sensor based on whispering gallery mode (WGM) is proposed in this paper. The WGM solution-concentration sensors were used to measure salt solutions, in which the concentrations ranged from 1% to 25% and the wavelength drifted from the left to the right. The experimental results showed an average sensitivity of approximately 0.372 nm/% and anR2linearity of 0.8835. The proposed WGM sensors are of low cost, feasible for mass production, and durable for solution-concentration sensing.

scholarly journals An Optical Fiber Sensor Based on La2O2S:Eu Scintillator for Detecting Ultraviolet Radiation in Real-Time

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3754 ◽  
Author(s):  
Yongji Yan ◽  
Xu Zhang ◽  
Haopeng Li ◽  
Yu Ma ◽  
Tianci Xie ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Response Time ◽  
Electromagnetic Interference ◽  
Uv Light ◽  
Optical Fiber Sensor ◽  
Temperature Response ◽  
Superior Performance ◽  
Fiber Sensor ◽  
Uv Detectors

A novel ultraviolet (UV) optical fiber sensor (UVOFS) based on the scintillating material La2O2S:Eu has been designed, tested, and its performance compared with other scintillating materials and other conventional UV detectors. The UVOFS is based on PMMA (polymethyl methacrylate) optical fiber which includes a scintillating material. Scintillating materials provide a unique opportunity to measure UV light intensity even in the presence of strong electromagnetic interference. Five scintillating materials were compared in order to select the most appropriate one for the UVOFS. The characteristics of the sensor are reported, including a highly linear response to radiation intensity, reproducibility, temperature response, and response time (to pulsed light) based on emission from a UV source (UV fluorescence tube) centered on a wavelength of 308 nm. A direct comparison with the commercially available semiconductor-based UV sensor proves the UVOFS of this investigation shows superior performance in terms of accuracy, long-term reliability, response time and linearity.

scholarly journals Special Section Guest Editorial: Optical Fiber Sensor Technology

2019 ◽  
Vol 58 (07) ◽  
pp. 1
Author(s):  
Gary A. Miller ◽  
Stavros Pissadakis ◽  
Ping Lu
Keyword(s):  
Optical Fiber ◽  
Guest Editorial ◽  
Special Section ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Sensor Technology

The Measure Technology of the Structure Stress during the Weighing Process of the Large Structure

2013 ◽  
Vol 838-841 ◽  
pp. 2010-2013
Author(s):  
Shu Min Li
Keyword(s):  
Finite Element Analysis ◽  
Optical Fiber ◽  
Dynamic Stress ◽  
Test Bench ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Sensor Technology ◽  
Large Structure ◽  
Element Analysis ◽  
Key Points

The structure needs to be lifted-off from the ground during the weighing progress. For that the weighing fulcrum and the building fulcrum are different and the building fulcrum is fewer usually and the weighing system has some asynchronism during the lifting process of the structure, it is very important to measure the stress of the key points of the structure during the weighing progress. The paper uses finite element analysis to get the stress sensitive of the weighing device while weighing and uses the optical fiber sensor technology to measure the dynamic stress. Through the experiment with the weighing test bench show that the optical fiber sensor technology has a clear advantage to the traditional resistance strain gauge technique.

scholarly journals Polymer Optical Fiber-Based Respiratory Sensors: Various Designs and Implementations

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
A. Arifin ◽  
Nelly Agustina ◽  
Syamsir Dewang ◽  
Irfan Idris ◽  
Dahlang Tahir
Keyword(s):  
Optical Fiber ◽  
Measurement System ◽  
Output Voltage ◽  
Low Cost ◽  
Optical Fiber Sensor ◽  
Digital Signal ◽  
Analog Signal ◽  
Fiber Sensor ◽  
Polymer Optical Fiber ◽  
Arduino Uno

This research discusses the polymer optical fiber sensor for respiratory measurements. The infrared LED that produces light will propagate along the polymer optical fiber which will be received by the phototransistor and the differential amplifier. The output voltage in the form of an analog signal will be converted to a digital signal by the Arduino Uno microcontroller and displayed on the computer. The polymer optical fiber sensor is installed on the corset using a variety of configuration (straight, sinusoidal, and spiral), placed in the abdomen, and a variety of positions (abdomen, chest, and back) using only a spiral configuration. While doing the inspiration, the stomach will be enlarged so that the optical fiber sensor will have strain. The strain will cause loss of power, the resulting light intensities received by the phototransistor are reduced, and the output voltage on the computer decreases. The result shows that the highest voltage amplitudes were in the spiral configuration placed in the abdominal position for slow respiration measurements with the highest range, sensitivity, and resolution which are 0.119 V, 0.238 V/s, and 0.004 s, respectively. The advantages of our work are emphasized on measurement system simplicity, low cost, easy fabrication, and handy operation and can be connected with the Arduino Uno microcontroller and computer.

Strain Analysis of Surface Bonded Optical Fiber Sensors

2011 ◽  
Vol 121-126 ◽  
pp. 4166-4170
Author(s):  
Shiuh Chuan Her ◽  
Chang Yu Tsai
Keyword(s):  
Optical Fiber ◽  
Electromagnetic Interference ◽  
Optical Fiber Sensor ◽  
Strain Analysis ◽  
Adhesive Layer ◽  
Optical Fiber Sensors ◽  
Fiber Sensor ◽  
Fiber Sensors ◽  
Theoretical Predictions ◽  
Host Structure

Optical fiber sensors with light weight, small size and immunity to electromagnetic interference have been found to be a promising device for use in the development of smart structures. It is well known that the strain transfer from the host structure to the optical fiber sensor is dependent on the bonding characteristics such as adhesive layer and bonded length. In this investigation, the optical fiber sensor is surface bonded on the host structure. A theoretical model consisting of the optical fiber, adhesive layer and host material, is proposed to determine the strain in the optical fiber sensor induced by the host structure. The theoretical predictions were validated with the numerical analysis using the finite element method.

Editorial Optical Fiber Sensor Technology and Applications

2008 ◽  
Vol 8 (7) ◽  
pp. 1052-1054 ◽  
Author(s):  
Andrea Cusano ◽  
Jos Miguel Lpez-Higuera ◽  
Ignacio R. Matias ◽  
Brian Culshaw
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Sensor Technology
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