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Journal articles on the topic 'Optial fiber sensor'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Kyselak, Martin, Jiri Vavra, Karel Slavicek, David Grenar, and Lucie Hudcova. "Long Distance Military Fiber-Optic Polarization Sensor Improved by an Optical Amplifier." Electronics 12, no. 7 (2023): 1740. http://dx.doi.org/10.3390/electronics12071740.

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The ever-increasing demands for the use of fiber-optic sensors powered by long optical fibers is forcing developers to solve problems associated with powering these remote sensors. Due to their non-electric character, these sensors are suitable for many uses, including military applications. The Army of the Czech Republic is very interested in this type of optical fiber sensor as it fulfils the significant prerequisites for use in military areas. However, the army’s requirements are challenging because they require long supply cables in which there is significant attenuation of optical power.

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2

Bartelt, Hartmut. "Fiber Bragg Grating Sensors and Sensor Arrays." Advances in Science and Technology 55 (September 2008): 138–44. http://dx.doi.org/10.4028/www.scientific.net/ast.55.138.

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Fiber Bragg gratings have found widespread application in sensor systems, e. g. for temperature, strain or refractive index measurements. The concept of fiber Bragg gratings allows also in a simple way the realisation of arrays of such sensors. The development of such optical fiber sensor systems often requires special fibers and grating structures which may go beyond more conventional Bragg grating structures in typical communication fibers. Concerning fibers there is, for example., a need of achieving fiber gratings in small diameter fibers and fiber tapers as well as in microstructured fibe

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Moś, Joanna Ewa, Karol Antoni Stasiewicz, and Leszek Roman Jaroszewicz. "Liquid crystal cell with a tapered optical fiber as an active element to optical applications." Photonics Letters of Poland 11, no. 1 (2019): 13. http://dx.doi.org/10.4302/plp.v11i1.879.

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The work describes the technology of a liquid crystal cell with a tapered optical fiber as an element providing light. The tapered optical fiber with the total optical loss of 0.22 ± 0.07 dB, the taper waist diameter of 15.5 ± 0.5 μm, and the elongation of 20.4 ± 0.3 mm has been used. The experimental results are presented for a liquid crystal cell filled with a mixture 1550* for parallel orientation of LC molecules to the cross section of the taper waist. Measurement results show the influence of the electrical field with voltage in the range of 0-200 V, without, as well as with different mod

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Jalil, Muhammad Arif Bin. "Optical Fiber Bragg Grating As A Temperature Sensor." International Journal for Research in Applied Science and Engineering Technology 12, no. 8 (2024): 1238–47. http://dx.doi.org/10.22214/ijraset.2024.64058.

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The optical fibre sensor (OFS) has become quite well-known and prominent in the sensor technology industry. It is often used to react to outputs from other systems, like those in industrial, monitoring, and chemical analysis applications, and to detect changes in the environment. A Fibre Bragg Grating (FBG) is a device that allows light to be reflected from a short section of optical fiber at a specific wavelength, while the Bragg reflector expands and transmits all other wavelengths. The current effort focuses on the evolving characteristics and behaviors of strain and temperature sensors ope

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Kleiza, V., and J. Verkelis. "Some Advanced Fiber-Optical Amplitude Modulated Reflection Displacement and Refractive Index Sensors." Nonlinear Analysis: Modelling and Control 12, no. 2 (2007): 213–25. http://dx.doi.org/10.15388/na.2007.12.2.14712.

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Some advanced fiber-optic amplitude modulated reflection displacement sensors and refractive index sensors have been developed. An improved three-fiber displacement sensor has been investigated as a refractive index sensor by computer simulations in a large interval of displacement. Some new regularities have been revealed. A reflection fiber-optic displacement sensor of novel configuration, consisting of double optical-pair fibers with a definite angle between the measuring tips of fibers in the pairs has been proposed, designed, and experimentally investigated to indicate and measure the dis

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Zenevich, A. O., T. G. Kovalenko, E. V. Novikov, and S. V. Zhdanovich. "Fiber-Optic Sensor for Identifying Liquids and Determining Solutions Concentration." Doklady BGUIR 21, no. 6 (2024): 14–20. http://dx.doi.org/10.35596/1729-7648-2023-21-6-14-20.

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Fiber-optic sensors for identifying liquids and determining the concentration of solutions have been studied with the possibility of using various types of single-mode optical fibers produced by industry and widely used in optical cables and telecommunications to create sensors for identifying liquids and determining the concentration of solutions. To identify liquids with different refractive indices and determine the concentration of substances dissolved in water, the peak value of the reflectograms of the optical fiber located at the interface between the optical fiber core and the environm

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Vašínek, Vladimír, Pavel Šmíra, Vladimira Rasnerova, et al. "Usage of Distributed Fiber Optical Temperature Sensors during Building Redevelopment." Advanced Materials Research 923 (April 2014): 229–32. http://dx.doi.org/10.4028/www.scientific.net/amr.923.229.

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This contribution describes the novel unique technology with the usage of fiber optical sensors with temperature resolution up to 0.01°C and spatial resolution 1m. This technology is supplemented with fiber optical strain sensor with pressure resolution 1Pa. Fiber optical sensors are based on nonlinear effects within the optical fibers, they behave as distributed sensors making possible to measure temperature and strain with one fiber in many points contemporarily during building redevelopments. For temperature measurements Raman scattering within multimode optical fiber is used. Results from

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Khabay, Anar, Murat Baktybayev, Serikbek Ibekeyev, Nurlan Sarsenbayev, Nuridin Junussov, and Nurzhan Zhumakhan. "Improvement of fiber optic sensor measurement methods for temperature and humidity measurement in microelectronic circuits." Eastern-European Journal of Enterprise Technologies 3, no. 5 (129) (2024): 36–44. http://dx.doi.org/10.15587/1729-4061.2024.306711.

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A wide range of applications such as healthcare, human comfort, agriculture, food processing and storage, and electronics manufacturing also require fast and accurate measurement of humidity and temperature. Optical fiber-based sensors have several advantages over electronic sensors, and much research has been conducted in this area in recent years. This paper describes the current trends in fiber optic temperature and humidity sensors. The evolution of optical structures aimed at humidity detection is presented, as well as a new design of an optical sensor used for this purpose. The main meth

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Han, Yan. "The Building of Optical Fiber Network System Using Hetero-Core Fiber Optic Sensors." Advanced Materials Research 571 (September 2012): 342–46. http://dx.doi.org/10.4028/www.scientific.net/amr.571.342.

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We proposed a novel optical sensory nerve network using pulse switch sensors. The pulse switch sensor generates light loss similar to pulse signals only when ON/OFF states change. Therefore, it has less influence on communications quality compared with conventional switch sensor modules as sensor multiplicity increases. Our simulated results demonstrated that the proposed system can improve sensor multiplicity while maintaining the communications and measuring performance with the same quality as a conventional system by appropriately adjusting the initial loss of the pulse switch sensors. In

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10

Khabay, A., Y. A. Tuleshov, A. A. Shadymanova, S. K. Sadykov, and V. K. Bayturganova. "Humidity measurement is based on the optical fiber sensor." Novosti nauki Kazahstana, no. 2 (June 30, 2022): 35–41. https://doi.org/10.53939/15605655/2022_2_35.

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Currently, it is necessary to further improve the sensitivity, selectivity, reliability and response time of sensors. An optical fiber based humidity sensor has been investigated with interest because of its advantages such as high sensitivity, fast response, compact size and anti-electromagnetic resistance. Proposed the infrasonic laser sensitivity to humidity-dependent based on optical fibers of the Fabry-Perot interferometers experimentally demonstrated. Based on these analyses, the principle of operation of an optical fiber sensor that measures humidity is proposed. Providing the principle

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Jalil, Muhammad Arif Bin. "Optical Fiber Bragg Grating as a Strain Sensor." International Journal for Research in Applied Science and Engineering Technology 12, no. 8 (2024): 1282–92. http://dx.doi.org/10.22214/ijraset.2024.64059.

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Abstract: The sensor technology industry has come to recognize and value the optical fibre sensor (OFS). It is frequently used to detect changes in the environment and to respond to outputs from other systems, such as those in industrial, monitoring, and chemical analysis applications. While a brief segment of optical fiber with a particular wavelength is reflected with light in a device known as a Fibre Bragg Grating, a Bragg reflector begins to grow and transmit all other wavelengths. Through software modeling, the current study focuses on the changing traits and behaviors of temperature and

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Braunfelds, Janis, Elvis Haritonovs, Ugis Senkans, et al. "Designing of Fiber Bragg Gratings for Long-Distance Optical Fiber Sensing Networks." Modelling and Simulation in Engineering 2022 (October 5, 2022): 1–14. http://dx.doi.org/10.1155/2022/8331485.

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Most optical sensors on the market are optical fiber Bragg grating (FBG) sensors with low reflectivity (typically 7-40%) and low side-lobe suppression (SLS) ratio (typically SLS <15 dB), which prevents these sensors from being effectively used for long-distance remote monitoring and sensor network solutions. This research is based on designing the optimal grating structure of FBG sensors and estimating their optimal apodization parameters necessary for sensor networks and long-distance monitoring solutions. Gaussian, sine, and raised sine apodizations are studied to achieve the main require

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Raj, Rajnish, Pooja Lohia, and D. K. Dwivedi. "Optical Fibre Sensors for Photonic Applications." Sensor Letters 17, no. 10 (2019): 792–99. http://dx.doi.org/10.1166/sl.2019.4152.

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Recent development in optical fiber and numerous advantages of light over electronic system have boosted the utility and demand for optical fibre sensor in modern era. Optical fibre sensor is used to measure the various parameters like temperature, pressure, vibration, rotation etc. Optical fibre sensor offers a wide spectrum of advantage over traditional sensing system in terms of longer lifetime and small in size. Optical fibre has been considered as not only the substitutes of conventional sensors but also the unique solutions in the field of scientific engineering and industrial research.

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Mądry, Mateusz, Bogusław Szczupak, Mateusz Śmigielski, and Bartosz Matysiak. "Investigation of using neural networks for temperature and relative humidity measurement with the Rayleigh scattering-based distributed optical fiber sensor." Photonics Letters of Poland 17, no. 1 (2025): 13–15. https://doi.org/10.4302/plp.v17i1.1315.

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The paper presents an investigation of neural networks for temperature and relative humidity (RH) measurement by Rayleigh-based distributed optical fiber sensor (DOFS). The sensor consists of bare and polyimide-coated fibers placed side by side, ensuring different sensitivities to temperature and RH. Two neural networks have been thoroughly examined in sensor data processing: Multilayer Perceptron (MLP) and Convolutional Neural Networks (CNN). These models were assessed in terms of mean square errors (MSE) and training time. The MLP model achieves better results with lower training time compar

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15

Kok, Sooping, YunIi Go, Xu Wang, and Dennis Wong. "A Review of Nanostructure Coating Techniques to Achieve High-Precision Optical Fiber Sensing Applications." Nanomanufacturing 4, no. 4 (2024): 214–40. https://doi.org/10.3390/nanomanufacturing4040015.

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Optical fiber sensors have emerged as a critical sensing technology across various fields due to their advantages, including high potential bandwidth, electrical isolation that is safe for utilization in electrically hazardous environments, high reliability, and ease of maintenance. However, conventional optical fiber sensors face limitations in achieving high sensitivity and precision. The integration of nanostructures with advanced coating technology is one of the critical solutions to enhancing sensor functionality. This review examined nanostructure coating techniques that are compatible w

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Drake, Daniel, Rani Sullivan, and J. Wilson. "Distributed Strain Sensing from Different Optical Fiber Configurations." Inventions 3, no. 4 (2018): 67. http://dx.doi.org/10.3390/inventions3040067.

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Strain distributions were obtained from optical fibers arranged in three different configurations on transversely-loaded cantilevered beams. Traditional strain measurement sensors, such as strain gauges, are limited to measuring strain at discrete points on a structural member. However, distributed optical fibers can measure high spatial (<1 mm spacing) strain or temperature distributions. In this study, optical fibers in spiral, grid, and rosette configurations were bonded to aluminum cantilevered beams subjected to tip loads. Strain distributions from optical fiber sensors were measured u

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Dorosz, J. "Novel constructions of optical fibers doped with rare – earth ions." Bulletin of the Polish Academy of Sciences Technical Sciences 62, no. 4 (2014): 619–26. http://dx.doi.org/10.2478/bpasts-2014-0067.

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Abstract. In the paper the research on rare-earth doped and co-doped optical fibre conducted in the Laboratory of Optical Fiber Technology at the Bialystok University of Technology is presented. Novel active fibre constructions like multicore, helical-core and side detecting ribbon/core optical fibers were developed with a targeted focus into application. First construction i.e. multicore RE doped optical fibers enable supermode generation due to phase - locking of laser radiation achieved in a consequence of exchanging radiation between the cores during the laser action. In the paper a far -

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18

Mohd Syahnizam Sulaiman, Punithavathi Thirunavakkarasu, Jean-Louis Auguste, Georges Humbert, Farah Sakiinah Roslan, and Norazlina Saidin. "Long Period Fiber Grating for Refractive Index Sensing." Journal of Advanced Research in Applied Sciences and Engineering Technology 30, no. 2 (2023): 154–62. http://dx.doi.org/10.37934/araset.30.2.154162.

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Refractive index (RI) sensors are very valuable in first level detection of changes to the environment. In this project an optical fiber-based sensor is proposed to detect changes in surrounding RI. Most optical fiber sensors require tapering to be done to enhance the light interaction with the surrounding. This causes the fiber to become fragile and difficult to handle. In this research, optical fibers with long period gratings (LPG) are proposed to overcome this issue. Zinc Oxide (ZnO) nanomaterial was deposited over the LPG region using seeding method to enhance the performance of the senso

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Pinto, Ana M. R., and Manuel Lopez-Amo. "Photonic Crystal Fibers for Sensing Applications." Journal of Sensors 2012 (2012): 1–21. http://dx.doi.org/10.1155/2012/598178.

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Photonic crystal fibers are a kind of fiber optics that present a diversity of new and improved features beyond what conventional optical fibers can offer. Due to their unique geometric structure, photonic crystal fibers present special properties and capabilities that lead to an outstanding potential for sensing applications. A review of photonic crystal fiber sensors is presented. Two different groups of sensors are detailed separately: physical and biochemical sensors, based on the sensor measured parameter. Several sensors have been reported until the date, and more are expected to be deve

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20

Fan, Zhichun, Shuda Zhong, Kehao Zhao, et al. "A Hermetic Package Technique for Multi-Functional Fiber Sensors through Pressure Boundary of Energy Systems Based on Glass Sealants." Photonics 11, no. 9 (2024): 792. http://dx.doi.org/10.3390/photonics11090792.

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This paper presents a hermitic fiber sensor packaging technique that enables fiber sensors to be embedded in energy systems for performing multi-parameter measurements in high-temperature and strong radiation environments. A high-temperature stable Intrinsic Fabry–Perot interferometer (IFPI) array, inscribed by a femtosecond laser direct writing scheme, is used to measure both temperature and pressure induced strain changes. To address the large disparity in thermo-expansion coefficients (TECs) between silica fibers and metal parts, glass sealants with TEC between silica optical fibers and met

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Dragic, Peter, and John Ballato. "A Brief Review of Specialty Optical Fibers for Brillouin-Scattering-Based Distributed Sensors." Applied Sciences 8, no. 10 (2018): 1996. http://dx.doi.org/10.3390/app8101996.

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Specialty optical fibers employed in Brillouin-based distributed sensors are briefly reviewed. The optical and acoustic waveguide properties of silicate glass optical fiber first are examined with the goal of constructing a designer Brillouin gain spectrum. Next, materials and their effects on the relevant Brillouin scattering properties are discussed. Finally, optical fiber configurations are reviewed, with attention paid to fibers for discriminative or other enhanced sensing configurations. The goal of this brief review is to reinforce the importance of fiber design to distributed sensor sys

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Arif, Noor Azie Azura Mohd, Chong Chee Jiun, Yong Wei Sen, and Abang Annuar Ehsan. "Integrating hetero-core fiber optics sensor in intelligent technological textiles." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 5 (2024): 4987. http://dx.doi.org/10.11591/ijece.v14i5.pp4987-4995.

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In the context of the emerging Industry 4.0 paradigm, smart fabric sensors have been representing a novel addition to the textile industry. The proposed sensors utilize macro-bending techniques with varying fiber optic core sizes. The study involved the construction and testing of macro-bending sensors using single-mode (9 μm) and hetero-core (50–9–50 μm) fibers, configured into seven sinusoidal loops. The experiment was further extended to different types of elastic textiles. Spandex demonstrated superior linearity compared with jersey and rubber bands. The integration with the DOIT ESP32 Dev

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Kochanowicz, Marcin, and Jakub Markiewicz. "Application of optical reflectometer for monitoring corrosion process." Photonics Letters of Poland 14, no. 2 (2022): 40. http://dx.doi.org/10.4302/plp.v14i2.1144.

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In this work, a corrosion sensor based on an optical time domain reflectometer was presented. The first sensor with a bare tip was used to measure the corrosion process of silica glass fiber. Another sensor with a deposited silver layer was used for monitoring the corrosion process in nitric acid. In both cases, reflectance at the end of the fiber was decreasing with immersion time. Thus we can describe the corrosion stage by the level of fresnel reflectance. The maximum sensitivities of the analyzed sensors were as follows: 0.7dB/min (3% HF solution) 0.15dB/h (5%HNO3 solution) Results showed

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Wen, Hsin-Yi, Hsiang-Cheng Hsu, Yao-Tung Tsai, Wen-Kai Feng, Chih-Lang Lin, and Chia-Chin Chiang. "U-Shaped Optical Fiber Probes Coated with Electrically Doped GQDs for Humidity Measurements." Polymers 13, no. 16 (2021): 2696. http://dx.doi.org/10.3390/polym13162696.

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The influence of the bending radius on the sensitivity of the graphene quantum dots (GQDs)-coated probe is experimentally investigated for a U-shaped probe. The fiber is bent into a U shape using the optic fiber flame heating method, and the optic fiber is enclosed in a glass tube to increase the stability of the probe. The surface of the U-shaped optical fiber was coated with electrospun fibers formed via electrospinning. Polymer materials doped with GQDs are applied to U-shaped optical fiber as humidity sensors. Graphene quantum dot nanofibers on the U-shaped optical fiber sensor to form a n

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Cao, Rongtao, Jingyu Wu, Yang Yang, Mohan Wang, Yuqi Li, and Kevin P. Chen. "A High-Temperature Multipoint Hydrogen Sensor Using an Intrinsic Fabry–Perot Interferometer in Optical Fiber." Photonics 10, no. 3 (2023): 284. http://dx.doi.org/10.3390/photonics10030284.

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This paper presents a multiplexable fiber optic chemical sensor with the capability of monitoring hydrogen gas concentration at high temperatures up to 750 °C. The Pd-nanoparticle infused TiO2 films coated on intrinsic Fabry–Perot interferometer (IFPI) array were used as sensory films. Strains induced upon exposure to hydrogen with varied concentrations can be monitored by IFPI sensors. The fiber sensor shows a repetitive and reversible response when exposed to a low level (1–6%) of hydrogen gas. Uniform sensory behavior across all the sensing cavities is demonstrated and reported in this pape

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Li, Ya-Lin, Xiao-Guang Cui, and Xiao-Yong Fang. "Numerical Analysis and Optimal Design of All-Optical Fiber Differential Acceleration Sensor." Sensor Letters 18, no. 1 (2020): 12–17. http://dx.doi.org/10.1166/sl.2020.4175.

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In order to improve the sensitivity of measurement and realize its miniaturization, an all-optical fiber differential acceleration sensor is studied. This sensor adopts a novel four-port ring fiber coupler, which can realizes the difference of optical signals and the isolation of light source and optical signal. Therefore, the sensitivity of this sensor is doubled compared with that of traditional fiber sensors. The stress–strain relationship simulation results of the sensor probe model show that with the increase of the measured acceleration value, the relative sensitivity, relative resolutio

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Wang, Wenjuan, Mengjie Zhang, and Jingfeng Xue. "Development of Fiber Sensors integrated with Aerospace Composites for Structure Health Monitoring." Advances in Engineering Technology Research 8, no. 1 (2023): 242. http://dx.doi.org/10.56028/aetr.8.1.242.2023.

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The wide-spread use of composite material in aircraft across the world is expected to create a big need to improve structure health monitoring (SHM). Optical fiber sensors offer more advantages than conventional sensors, such as light weight, small size, immune to electromagnetic interference, easily embedded in composites. Extensive applications have been reported with a few embedded technology details by Boeing and Airbus, etc. In this paper, The methods of improved optical fiber surface-bonded composites by glass cloth and epoxy resin, as well as optical fiber embedded in composites were re

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Hidayat, N., M. S. Aziz, G. Krishnan, et al. "Tapered optical fibers using CO₂ laser and their sensing performances." Journal of Physics: Conference Series 2432, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1742-6596/2432/1/012013.

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Abstract In this paper, we proposed a simple tapering process of optical fibers using controlled CO2 laser. This is a response to the call for the rapid development of affordable, efficient, and reliable optical sensors. A laser with power of 36 W was focused on a small section of three optical fibers having core/cladding diameters in micrometer of 10/125 (sensor A), 62.5/125 (sensor B), and 200/225 (sensor C). The sensors were tested on solutions having refractive indices of 1.3325 to 1.4266. Our investigation revealed that sensor C offered highest sensitivity. Therefore, further characteriza

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Kasztelanic, Rafał, Grzegorz Stepniewski, Dariusz Pysz, and Ryszard Buczyński. "Influence of the core shape on the quality of fiber sensors based on D-shape fiber." Photonics Letters of Poland 16, no. 3 (2024): 43–45. http://dx.doi.org/10.4302/plp.v16i3.1282.

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Typical optical sensors based on D-shape fibers use standard step-index single-mode fibers (SMF) with a circular core. Multi-mode fibers, fibers with elliptical or rectangular cores, and photonic crystal fibers (PCF) are also used to achieve the best possible sensor performance. However, since the presented sensors differ not only in geometry but, most importantly, in the materials and core sizes, it is difficult to compare their properties directly. In this paper, we numerically analyzed the influence of the shape and size of the core on the sensing performance, with all other relevant parame

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Li, Yujie, Ming Zhang, and Yu Zhu. "Research on the estimation method of the point-of-interest (POI) displacement for ultra-precision flexible motion system based on functional optical fiber sensor." Mechanics & Industry 22 (2021): 48. http://dx.doi.org/10.1051/meca/2021047.

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This paper proposes a POI displacement estimation method based on the functional optical fiber sensor and the phase modulation principle to improve the POI displacement estimation accuracy. First, the relation between the object deformation and the optic fiber lightwave phase is explained; the measurement principle of functional optical fiber sensor based on the heterodyne interference principle and its layout optimization method is proposed, and a POI displacement estimation model is presented based on the data approach. Secondly, a beam is taken as the simulation object, the optimal position

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Irawan, Rudi, Tjin Swee Chuan, Tay Chia Meng, and Tan Khay Ming. "Rapid Constructions of Microstructures for Optical Fiber Sensors Using a Commercial CO2 Laser System." Open Biomedical Engineering Journal 2, no. 1 (2008): 28–35. http://dx.doi.org/10.2174/1874120700802010028.

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Exposing an optical fiber core to the measurand surrounding the fiber is often used to enhance the sensitivity of an optical fiber sensor. This paper reports on the rapid fabrication of microstructures in an optical fiber using a CO2 laser system which help exposing the optical fiber core to the measurand. The direct-write CO2 laser system used is originally designed for engraving the polymeric material. Fabrications of microstructures such as in-fiber microhole, D-shaped fiber, in-fiber microchannel, side-sliced fiber and tapered fiber were attempted. The microstructures in the fibers were ex

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*Ahmadullah Shakir, Abdul Nahid Rahmahni, T. M. Bulanova, K. A. Kassymova, and N. T. Isaeva. ""DISCRIMINATION OF TEMPERATURE AND STRAIN INTERFERENCE IN FBG SENSORS USING TAPERED OPTICAL FIBER SENSOR "." Bulletin of Toraighyrov University. Physics & Mathematics series, no. 3,2023 (September 29, 2023): 110–22. http://dx.doi.org/10.48081/xkdv2637.

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"The optical fiber industry has progressed a lot in recent years. Earlier, they were used as a bed to carry light and image for medical applications, especially in endoscopy. In the mid-1960s, calls were widely used to transmit information. So far, optical fiber technology has been a worthy subject for research. Low loss rate, high bandwidth, electromagnetic reliability, small size, light weight, safety, relatively cheap price, low need for reconstruction and maintenance are the reasons for the attractiveness of optical fibers. In recent years, optical sensors, including FBG, are widely used i

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Her, Shiuh Chuan, Bo Ren Yao, Shien Chin Lan, and Chun Yen Liu. "Stress Analysis of a Resin Pocket Embedded in Laminated Composites for an Optical Fiber Sensor." Key Engineering Materials 419-420 (October 2009): 293–96. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.293.

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Optical fiber sensors have a number of advantages over conventional electronic sensors such as light weight, small diameter and immunity to electromagnetic interference. Despite all the advantages of optical sensors, one must recognize that optical fibers are foreign entities to the host structure, therefore will induce stress concentration in the vicinity of the embedded sensor. As an optical sensor is embedded between plies, a lenticular resin pocket exists in the composite plies. The resin pocket acts as a crack-like region, and can form the site of the initiation of the delamination under

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Baumbick, R. J. "Fiber Optics for Propulsion Control Systems." Journal of Engineering for Gas Turbines and Power 107, no. 4 (1985): 851–55. http://dx.doi.org/10.1115/1.3239822.

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The term “fiber optics” means the use of dielectric waveguides to transfer information. In aircraft systems with digital controls, fiber optics has advantages over wire systems because of its inherent immunity to electromagnetic noise (EMI) and electromagnetic pulses (EMP). It also offers a weight benefit when metallic conductors are replaced by optical fibers. To take full advantage of the benefits of optical waveguides, passive optical sensors are also being developed to eliminate the need for electrical power to the sensor. Fiber optics may also be used for controlling actuators on engine a

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Pitruzzella, Rosalba, Chiara Marzano, Francesco Arcadio, et al. "Silica Optical Fibers Connected via a Micro MIP-Core Waveguide to Build Optical-Chemical Sensors." Chemosensors 13, no. 4 (2025): 139. https://doi.org/10.3390/chemosensors13040139.

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Molecularly imprinted polymers (MIPs) can be combined with optical fibers (OFs) to create various sensor configurations, yielding low-cost and highly sensitive extrinsic and intrinsic sensors. In this work, an MIP-based extrinsic optical fiber sensor is obtained by two silica OFs connected via an optical waveguide using an MIP as a core of micrometer size (micro OF-MIP-OF sensor). The proposed sensing approach can be used only with MIP receptors and implements an intensity-based sensor configuration. MIPs present several advantages over bio-receptors and can be exploited to realize novel sensi

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Leiva, Luis Alberto Mosquera, Ana Victoria Torre Carrillo, and Ladislao Jesús Basurto Pinao. "Sensitivity of a tapered fiber optic displacement sensor with S-shaped structure." Brazilian Journal of Development 10, no. 3 (2024): e67756. http://dx.doi.org/10.34117/bjdv10n3-007.

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We present and analyze the transmittance characteristics of displacement sensors based on S-curved and tapered single-mode optical fibers. We compare the sensitivity of the S-curved tapered fiber sensor, with respect to the sensitivity of the tapered fiber without prior curvature. The results show sensitivities of up to 192 pm / µm for the S-type sensors relative to sensitivities of the order of 100 pm / µm for the simply tapered sensors.

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Park, Chan Hee, Arim Lee, Rinah Kim, and Joo Hyun Moon. "Evaluation of the Detection Efficiency of LYSO Scintillator in the Fiber-Optic Radiation Sensor." Science and Technology of Nuclear Installations 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/248403.

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The aim of this study was to develop and evaluate fiber-optic sensors for the remote detection of gamma rays in areas that are difficult to access, such as a spent fuel pool. The fiber-optic sensor consists of a light-generating probe, such as scintillators for radiation detection, plastic optical fibers, and light-measuring devices, such as PMT. The (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator was chosen as the light-generating probe. The (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator has higher scintillation efficiency than the others and transmits light well through an optical fiber because its refraction in

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Chyad, Radhi M., Mohd Zubir Mat Jafri, and Kamarulazizi Ibrahim. "Nano-Optical Fiber Evanescent Field Sensors." Advanced Materials Research 626 (December 2012): 1027–32. http://dx.doi.org/10.4028/www.scientific.net/amr.626.1027.

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The nanofiber optic evanescent field sensor based on a changed cladding part as a sensor presented numerically. The influences of numerical opening, core radius of the fiber, the wavelength is effected on the light source and the submicron fiber on the sensors are promise to studied in this work. The results pointed out the sensitivity of the sensor increases when the numerical opening of the fiber is increases and the core radius is decreases. The NA of the fiber affects the sensitivity of the sensor. In the uniform core fiber, the increase in the NA increases the sensitivity of the sensor. T

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Lakomski, Mateusz, Grzegorz Tosik, and Przemyslaw Niedzielski. "Optical Fiber Sensor for PVC Sheet Piles Monitoring." Electronics 10, no. 13 (2021): 1604. http://dx.doi.org/10.3390/electronics10131604.

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This paper examined the impact of optical fiber sensor design, and its integration to PVC (polyvinyl chloride) sheet piles, on deflection and strain monitoring. Optical fiber sensors based on Brillouin light backscattering (BLS) were prepared, as they can provide accurate strain and deflection measurement results. However, depending on the application of sheet piles systems, high deformation of PVC elements can be observed. Therefore, a fiber sensor design is not trivial. Three types of optical fiber coatings and their integration with PVC sheet piles were investigated. The effect on the value

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Cheng, Tai Hong, Seong Hyun Lim, Chang Doo Kee, and Il Kwon Oh. "Development of Fiber-PZT Array Sensor System." Advanced Materials Research 79-82 (August 2009): 263–66. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.263.

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In this study, array type fiber-PZT senor systems were newly developed with capabilities of detecting both damage location and monitoring of gas or liquid leakage by applying time-frequency analyses. The system consists of two piezoelectric transducers for the signal receiver and generator applications and three optical fibers for wave propagation. The results showed developed fiber-PZT array sensor can accurately measure the position of crack and its intensity. Also the fluid leakage of methyl alcohol as test specimen, on the plate structure has also been investigated employing the fiber-PZT

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Dalya H. Abbas, Hanan J. Taher, and Bushra R. Mahdi. "Optical Fiber Sensors Based on Surface Plasmon Resonance: A Comprehensive Review." Iraqi Journal of Laser 24, no. 1 (2025): 55–81. https://doi.org/10.31900/ijl.v24i1.508.

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Surface Plasmon sensor is commonly used in chemistry, biologic, and environments nursing. This type of sensor display strange sympathy depends on surfaces Plasmon resonance (SPRs) or localize surfaces Plasmon resonance (LSPRs) effect, which have a commercial application. In this review, we present current progressing in the fields of surfaces plasmatic sensor, principally in the configuration of planar Meta structure and optical-fiber waveguide. In the Meta structures platforms, the optical sensor depend on LSPRs, hyperbolic dispersions, Fanon resonance, and two-dimension (2Ds) material integr

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Gao, Zhijun, Zhenbo Li, and Yu Ying. "A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures." Photonics 12, no. 7 (2025): 695. https://doi.org/10.3390/photonics12070695.

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With the continuous advancement of optical fiber micromachining technology, C-type optical fibers have demonstrated significant potential in the field of optical fiber sensing. By partially or completely removing specific regions of the cladding, a “leakage window” is created, enabling interaction between the optical field and external substances. This structure has facilitated the development of various sensors. This paper reviews recent progress in the research and applications of C-type optical fibers in optical sensing. Based on sensing principles and application scenarios, C-type optical

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Christof, Hans, Lena Müller, Simon Küppers, et al. "Integration Methods of Sensors in FRP Components." Materials Science Forum 825-826 (July 2015): 586–93. http://dx.doi.org/10.4028/www.scientific.net/msf.825-826.586.

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Structural health monitoring is an important research topic in the field of fiber reinforced plastics (FRP). An effective way to detect defects or overloads in these FRP has still not been found. One way to monitor the actual state of FRP components is via integrated sensors. Integrating current standard sensors negatively affects the flux of force. Therefore investigations about integration methods of sensors in FRP components have been made. The integration of an optical fiber sensor into FRP profiles via a pultrusion process was investigated. It could be shown that the pultrusion process is

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Luo, Ying-Jie, Shao-Yi Wu, Qin-Sheng Zhu, Xiao-Yu Li, Yong-Xin Li, and De-Shuang Zhao. "Theoretical research of the medical U-type optical fiber sensor covered by the gold nanoparticles." Zeitschrift für Naturforschung A 76, no. 5 (2021): 385–93. http://dx.doi.org/10.1515/zna-2020-0218.

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Abstract Previous studies of the gold-nanoparticles-covered U-type medical optical fiber sensor with millimeter size were mainly confined to the experimental aspect, while the corresponding theoretical studies were only for bare fibers based on geometrical optics or those for micron level photonic crystal fibers based on wave optics. Combining wave and geometrical optics, the gold-nanoparticles-covered U-type optical fiber sensor was simulated with millimeter size. The localized surface plasmon resonance absorption peak near 540 nm is obtained in the simulation, very close to that (≈560 nm) of

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Dakić, Bojan M., Jovan S. Bajić, Dragan Z. Stupar, Miloš P. Slankamenac, and Miloš B. Živanov. "A Novel Fiber-Optic Mass Flow Sensor." Key Engineering Materials 543 (March 2013): 231–34. http://dx.doi.org/10.4028/www.scientific.net/kem.543.231.

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In this paper a novel fiber-optic mass flow sensor based on coriolis force is presented. As sensing elements two fiber-optic curvature sensors mounted on elastic rubber tube are used. Rubber tube with sensing elements is excited by stepper motor. Produced system has the option of varying angle and speed of excitation. The bending of the fibers at the sensitive zone on curvature sensor changes the intensity of light traveling through the optical fiber. Curvature sensors are attached to the rubber tube so that they can measure phase difference produced by coriolis force. Mass flow rate is obtain

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Xu, Cheng, and Zahra Sharif Khodaei. "A Novel Fabry-Pérot Optical Sensor for Guided Wave Signal Acquisition." Sensors 20, no. 6 (2020): 1728. http://dx.doi.org/10.3390/s20061728.

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In this paper, a novel hybrid damage detection system is proposed, which utilizes piezoelectric actuators for guided wave excitation and a new fibre optic (FO) sensor based on Fabry-Perot (FP) and Fiber Bragg Grating (FBG). By replacing the FBG sensors with FBG-based FP sensors in the hybrid damage detection system, a higher strain resolution is achieved, which results in higher damage sensitivity and higher reliability in diagnosis. To develop the novel sensor, optimum parameters such as reflectivity, a wavelength spectrum, and a sensor length were chosen carefully through an analytical model

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Hosoki, Ai, Kifuyu Sugiura, Takuya Okazaki, et al. "Rapid Monitoring of Scale Precipitation and Inhibition in Geothermal Fluid Using Optical Fiber Sensor Based on Surface Plasmon Resonance." Fibers 12, no. 9 (2024): 74. http://dx.doi.org/10.3390/fib12090074.

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An optical fiber scale sensor based on the detection principle of surface plasmon resonance (SPR) was developed for the rapid, high-sensitivity, real-time evaluation of scale precipitation in geothermal fluids. The optical fiber SPR scale sensor was fabricated by depositing a gold thin film onto the surface of an optical fiber with an exposed core. The optimal gold film thickness of the sensor was determined to be 30 nm, which achieved a refractive index sensitivity of 2140 nm per refractive index unit. A field test was conducted using geothermal brine from the Obama Binary Geothermal Power Pl

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Shiryaev, Vladimir S., Alexander P. Velmuzhov, Tatiana V. Kotereva, Elizaveta A. Tyurina, Maksim V. Sukhanov, and Ella V. Karaksina. "Recent Achievements in Development of Chalcogenide Optical Fibers for Mid-IR Sensing." Fibers 11, no. 6 (2023): 54. http://dx.doi.org/10.3390/fib11060054.

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Recent results of research of passive and active optical waveguides made of high-purity chalcogenide glasses for middle infrared fiberoptic evanescent wave spectroscopy of liquid and gaseous substances are presented. On the basis of selenide and telluride glass fibers, novel types of highly sensitive fiber probes are developed. On the basis of Pr(3+)- and Tb(3+)-doped Ga(In)-Ge-As-Se and Ga-Ge-Sb-Se glass fibers, the 4.2–6 μm wavelength radiation sources are created for all-fiber sensor systems. Successful testing of chalcogenide glass fiber sensors for the analysis of some liquid and gaseous

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Zubia, Gorka, Joseba Zubia, Josu Amorebieta, Gotzon Aldabaldetreku, Asier Zubia, and Gaizka Durana. "High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity." Sensors 25, no. 2 (2025): 418. https://doi.org/10.3390/s25020418.

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Optical Fiber Displacement Sensors (OFDSs) provide several advantages over conventional sensors, including their compact size, flexibility, and immunity to electromagnetic interference. These features make OFDSs ideal for use in confined spaces, such as turbines, where direct laser access is impossible. A critical aspect of OFDS performance is the geometry of the fiber bundle, which influences key parameters such as sensitivity, range, and dead zones. In this work, we present a streamlined design methodology for azimuthally symmetric OFDSs to improve the linear range of these sensors. The most

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Et. al., Dr S. Venkateswara Rao,. "Comprehensive Study and Experimental Validation of U-shaped Probe Extrinsic Fiber Optic Sensor for the Measurement of Refractive Index at Various Temperatures using a Tunable Light Source." INFORMATION TECHNOLOGY IN INDUSTRY 9, no. 2 (2021): 679–93. http://dx.doi.org/10.17762/itii.v9i2.399.

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Extensive detection performances due to sensitivity to external and internal perturbations in the fiber structure makes the optical fiber sensors highly superior over the conventional sensors. The fiber optic sensors with clad removed fibers at some portion along its length play a vital role in the determination of refractive index of various liquids at several wavelengths and at several temperatures. In the present paper a refractive index sensor has been developed to investigate the performance and experimental validation in the measurement of R.I. values of liquids at various temperatures u

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