Potential Low-Cost Spectral-Encoded Optical Fiber Sensor System: Technology and Applications

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.

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

Journal of Nanomaterials ◽

10.1155/2013/372625 ◽

2013 ◽

Vol 2013 ◽

pp. 1-4 ◽

Cited By ~ 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.

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Polymer Optical Fiber Sensor System for Multi Plane Bending Angle Assessment

IEEE Sensors Journal ◽

10.1109/jsen.2019.2954083 ◽

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

Journal of Sensors ◽

10.1155/2019/6970708 ◽

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.

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RGB LED driver circuit design for an optical fiber sensor system

2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) ◽

10.1109/ecticon.2016.7561288 ◽

2016 ◽

Cited By ~ 1

Author(s):

Ian A. Grout ◽

Muhaned Zaidi ◽

Karel L. Sterckx ◽

Abu Khari bin A'ain

Keyword(s):

Optical Fiber ◽

Circuit Design ◽

Optical Fiber Sensor ◽

Sensor System ◽

Fiber Sensor ◽

Led Driver ◽

Driver Circuit

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Analyses of carboxylic acid esters and lubricants using a gold-coated optical-fiber sensor system.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.49.307 ◽

2000 ◽

Vol 49 (5) ◽

pp. 307-311 ◽

Cited By ~ 16

Author(s):

Masaru MITSUSHIO ◽

Toshifumi YOSHIDOME ◽

Satsuo KAMATA

Keyword(s):

Carboxylic Acid ◽

Optical Fiber ◽

Optical Fiber Sensor ◽

Sensor System ◽

Fiber Sensor ◽

Acid Esters

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Evaluation of Bolt Strength Characteristics in Bolted Joints Using an Optical Fiber Sensor System

Volume 2: Computer Technology and Bolted Joints ◽

10.1115/pvp2019-93491 ◽

2019 ◽

Author(s):

Atsushi Shirakawa ◽

Toshiyuki Sawa

Keyword(s):

Optical Fiber ◽

Strain Distribution ◽

Force Measurement ◽

Optical Fiber Sensor ◽

Effective Cross Section ◽

Tensile Load ◽

Bolted Joints ◽

Strength Characteristics ◽

Sensor System ◽

Fiber Sensor

Abstract Bolted joints are used in many industrial products such as mechanical structures, automobiles, airplanes, chemical plants, and so on. In many cases, after the design of new products is finished, various tests on the bolt and bolted joints are carried out using actual parts to prevent accidents due to bolt loosening and fracture. At the same time, in the strength tests, external force measurement, axial bolt force measurement and so on are included. However, there are no advanced tests in which axial bolt strain distribution or bolt elongation in actual parts and so on are measured. Therefore, in this research, a new method for evaluating bolt strength characteristics using an optical fiber sensor system capable of measuring actual parts is demonstrated. First, a tensile strength test using an optical fiber sensor is carried out to measure strain distribution in a bolt, and a maximum strain value position in the measured clamp load-strain curve is shown. Then, the elongation at each part of the bolt is shown. Next, yield clamp bolt force is found using this sensor system in torque/clamp force testing. In addition, the measured yield clamp bolt force is compared with the values in the conventional measurement method and in the estimation formula. Also, discussed is the effective cross section area by which the stress at the engaged threads is calculated under tensile load. Finally, another case where an optical fiber sensor system is used for bolt fastening evaluation is discussed.

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