Plastic Optical Fibre Sensors for Structural Health Monitoring: A Review of Recent Progress

Kuang, K. S. C.; Quek, Ser Tong; Koh, Cheng-Gee; Cantwell, W.J.; Scully, Patricia

doi:10.1155/2009/312053

Cited by 104 publications

(54 citation statements)

References 43 publications

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“…However, it is known that a silica core fibre may not be suitable for use in a harsh environment due to its fragility after removing the cladding. In contrast, polymeric optical fibres (POF) have higher elasticity and strength to resist rough handling that makes them well suited to be embedded within wound dressings [20]. In the work presented in this paper, the fabrication and characterisation of a polymeric optical fibre humidity sensor (POFHS) is described.…”

Section: Studies By Wintermentioning

confidence: 99%

Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment

Gómez

Morgan

Hayes-Gill

et al. 2018

Sensors and Actuators B: Chemical

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The sensitivity of a low-cost polymeric optical fibre humidity sensor based on transmittance changes due to evanescent wave absorption is reported using test measurements in an environmental chamber and of the skin. The layer-by-layer method was used to coat 30mm of the central unclad section of a multimode polymeric optical fibre with 7 layers of a hydrophilic film consisting of bilayers of poly(allylamine hydrochloride) and SiO2 mesoporous nanoparticles. Sensor characterisation shows a decrease in light transmission as relative humidity increases as a result of refractive index changes of the coating deposited onto the optical fibre which correlates with a commercial capacitive humidity sensor. The sensitivity obtained for the sensor coated with an optimum 7 layers was approximately -3.87x10 -3 and -9.61x10 -3 in transmittance percentage per RH percentage for the range of ~10% to ~75% RH and 90% to 97% RH, respectively. In addition, a response time of 1.5s can be seen for breath monitoring with the polymeric optical fibre humidity sensor. The proof of concept measurements made on the skin indicate that this sensor has the potential to be used to monitor humidity of the skin microenvironment within a wound dressing which can be used to provide better prognosis of healing.

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Section: Studies By Wintermentioning

confidence: 99%

Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment

Gómez

Morgan

Hayes-Gill

et al. 2018

Sensors and Actuators B: Chemical

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“…As a consequence, when the fiber is bent, the light rays outside of the bend section will be emitted; the others will continue to meet internal reflection as seen in Figure 3 [30][31][32]. Weaving is a method of textile production which interlaces warp and weft yarns to form a fabric ( Figure 4).…”

Section: Development and Optimization Of A Lefmentioning

confidence: 99%

Light-Emitting Woven Fabric for Treatment with Photodynamic Therapy and Monitoring of Actinic Keratosis

Oguz¹,

Končar²,

Cochrane³

et al. 2017

Photomedicine - Advances in Clinical Practice

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A successful photodynamic therapy (PDT) requires a specific photosensitizer, oxygen and light of a specific wavelength and power. Today photodynamic therapy (PDT) is administered to patients with light-emitting diode (LED) panels. These panels deliver a non-uniform light distribution on the human body parts, as the complex human anatomy is not a flat surface (head vertex, hand, shoulder, etc.). For an efficient photodynamic therapy (PDT), a light-emitting fabric (LEF) was woven from plastic optical fibers (POF) aiming at the treatment of dermatologic diseases such as actinic keratosis (AK). Plastic optical fibers (POF) (Toray, PGR-FB250) have been woven in textile in order to create macro-bendings, and thus emit out the injected light directly to the skin. The light intensity and light-emitting homogeneity of the LEF were improved thanks to Doehlert Experimental Design. During the treatment with PDT, the photosensitizers were activated in the cancerous cells. These cells may be visualized, as they show a characteristic fluorescence under UV light, which is called fluorescence diagnosis (FD). Therefore, it is proposed to modify the developed LEF for PDT to measure the fluorescence amount. For this aim, a part of POFs was cut out to observe the quantity of light that could be collected while the LEF was connected to a light source. The first prototypes showed the possibility of the illumination with the same LEF without losing the efficiency but also imaging the collected light.

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“…POF has significant advantages for many sensing applications which are strained with high elasticity, not easily broken, high flexibility, high sensitivity and has negative thermo-optic coefficient [10,11]. In the last few years has done a lot of research on polymer optical fiber-based sensors which are as displacement sensor with imperfection [1], strain and temperature sensors [12,13], sensors for SHM applications [14,15]. Currently POF-based sensors have also been developed for the measurement of weight-in-motion (WIM) [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Comparison of sensitivity and resolution load sensor at various configuration polymer optical fiber

Arifin¹,

Yusran²,

Miftahuddin³

et al. 2017

AIP Conference Proceedings

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This study uses a load sensor with a macro-bending on polymer optical fiber loop model which is placed between two plates with a buffer spring. The load sensor with light intensity modulation principle is an infrared LED emits light through the polymer optical fiber then received by the phototransistor and amplifier. Output voltage from the amplifier continued to arduino sequence and displayed on the computer. Load augment on the sensor resulted in an increase of curvature on polymer optical fibers that can cause power losses gets bigger too. This matter will result in the intensity of light that received by phototransistor getting smaller, so that the output voltage that ligable on computer will be getting smaller too. The sensitivity and resolution load sensors analyzed based on configuration with various amount of loops, imperfection on the jacket, and imperfection at the cladding and core of polymer optical fiber. The results showed that the augment on the amount of load, imperfection on the jacket and imperfection on the sheath and core polymer optical fiber can improve the sensitivity and resolution of the load sensor. The best sensors resolution obtained on the number of loops 4 with imperfection 8 on the core and cladding polymer optical fiber that is 0.037 V/N and 0,026 N. The advantages of the load sensor based on polymers optical fiber are easy to make, low cost and simple to use measurement methods.

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Plastic Optical Fibre Sensors for Structural Health Monitoring: A Review of Recent Progress

Cited by 104 publications

References 43 publications

Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment

Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment

Light-Emitting Woven Fabric for Treatment with Photodynamic Therapy and Monitoring of Actinic Keratosis

Comparison of sensitivity and resolution load sensor at various configuration polymer optical fiber

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