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Journal articles on the topic 'Sensor fiber'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

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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2

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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3

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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4

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 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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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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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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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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9

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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10

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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11

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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Kozbakova, Ainur, Aliya Kalizhanova, Kisala Piotr, Murat Kunelbayev, and Zhalau Aitkulov. "SIGNALS PROCESSING METHOD FOR FIBER-OPTIC SENSORS WITH TILTED FIBER BRAGG GRATING." Вестник КазАТК 123, no. 4 (2022): 372–81. http://dx.doi.org/10.52167/1609-1817-2022-123-4-372-381.

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The article presents signals processing method for fiber-optic sensors with tilted Bragg grating. Developed technique is based on the analysis of signals output spectrum to capture Fourier-images in the area. The main idea of the being offered method is in using sensitive tilted fiber Bragg grating fiber-optic sensors. The given sensor is insensitive to any influence in multimode fibers and other parts of the device. Devices, based on such principles, do not need recalibration after switching on and further operation. There is presented the sensor parameters optimization on the basis of numeri

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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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14

Zhang, Zhe, Baijie Xu, Min Zhou, et al. "Hollow-Core Fiber-Tip Interferometric High-Temperature Sensor Operating at 1100 °C with High Linearity." Micromachines 12, no. 3 (2021): 234. http://dx.doi.org/10.3390/mi12030234.

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Over decades, fiber-optic temperature sensors based on conventional single-mode fibers (SMF) have been demonstrated with either high linearity and stability in a limited temperature region or poor linearity and thermal hysteresis in a high-temperature measurement range. For high-temperature measurements, isothermal annealing is typically necessary for the fiber-optic sensors, aiming at releasing the residual stress, eliminating the thermal hysteresis and, thus, improving the high-temperature measurement linearity and stability. In this article, an annealing-free fiber-optic high-temperature (1

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15

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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16

Wang, Wenyu, Karim Ouaras, Alexandra L. Rutz, et al. "Inflight fiber printing toward array and 3D optoelectronic and sensing architectures." Science Advances 6, no. 40 (2020): eaba0931. http://dx.doi.org/10.1126/sciadv.aba0931.

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Scalability and device integration have been prevailing issues limiting our ability in harnessing the potential of small-diameter conducting fibers. We report inflight fiber printing (iFP), a one-step process that integrates conducting fiber production and fiber-to-circuit connection. Inorganic (silver) or organic {PEDOT:PSS [poly(3,4-ethylenedioxythiophene) polystyrene sulfonate]} fibers with 1- to 3-μm diameters are fabricated, with the fiber arrays exhibiting more than 95% transmittance (350 to 750 nm). The high surface area–to–volume ratio, permissiveness, and transparency of the fiber arr

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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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18

Zhao, Jinlei, Tengfei Bao, and Tribikram Kundu. "Wide Range Fiber Displacement Sensor Based on Bending Loss." Journal of Sensors 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/4201870.

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A wide range fiber optic sensor system for displacement and crack monitoring is developed. In the proposed fiber optic sensor system, a number of fiber loops are formed from a single fiber and each fiber loop is used as a crack or displacement sensor. The feasibility and the dynamic range of the fiber sensor developed in this manner are investigated experimentally. Both glass fibers and plastic fibers are used in the experiments. Experimental results show that the new fiber optic sensor has a wide range (maximum range is 88 mm) and this sensor also has a high sensitivity for displacement and c

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19

Feng, Chengcheng, Hao Niu, Hongye Wang, et al. "Probe-Type Multi-Core Fiber Optic Sensor for Simultaneous Measurement of Seawater Salinity, Pressure, and Temperature." Sensors 24, no. 6 (2024): 1766. http://dx.doi.org/10.3390/s24061766.

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In this article, we propose and demonstrate a probe-type multi-core fiber (MCF) sensor for the multi-parameter measurement of seawater. The sensor comprises an MCF and two capillary optical fibers (COFs) with distinct inner diameters, in which a 45° symmetric core reflection (SCR) structure and a step-like inner diameter capillary (SIDC) structure filled with polydimethylsiloxane (PDMS) are fabricated at the fiber end. The sensor is equipped with three channels for different measurements. The surface plasmon resonance (SPR) channel (CHSPR) based on the side-polished MCF is utilized for salinit

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20

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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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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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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Zhu, Zhong Yuan, and M. Cecilia Yappert. "Determination of the Effective Depth for Double-Fiber Fluorometric Sensors." Applied Spectroscopy 46, no. 6 (1992): 919–24. http://dx.doi.org/10.1366/0003702924124358.

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The relationship between the relative fluorescence signal excited and collected with a double-fiber optic sensor and the sample depth has been investigated. The complexity of the analytical expressions for the relative fluorescence signal and the effective depth was reduced by deriving a set of semi-empirical equations which can be evaluated in a simple fashion. These expressions take into account the configuration of the sensor, i.e., fiber diameter, acceptance angle, and separation between fibers. The expressions were tested with the use of double-fiber sensors with different diameters and s

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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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Kwon, Hyunseok, Yurim Park, Pratik Shrestha, and Chun-Gon Kim. "Application of silicon carbide fibers as a sensor for low-velocity impact detection and localization." Structural Health Monitoring 18, no. 5-6 (2018): 1372–82. http://dx.doi.org/10.1177/1475921718810398.

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In this study, silicon carbide fiber was proposed as a sensor for detection and localization of low-velocity impacts on composite structures. Semi-conductive silicon carbide fibers have excellent piezoresistivity and good mechanical properties, so their potential as a sensor for low-velocity impact detection and localization was investigated by attaching it on the surface of a composite panel. By measuring the resistance change of the silicon carbide fiber sensor due to low-velocity impacts on the composite material, impacts signals were obtained, and the resistance changes of the silicon carb

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Ivanov, Oleg V., and Alexey A. Chertoriyskiy. "Fiber-Optic Bend Sensor Based on Double Cladding Fiber." Journal of Sensors 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/726793.

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We develop and investigate fiber-optic bend sensor, which is formed by a section of double cladding SM630 fiber between standard SMF-28 fibers. The principle of operation of the sensor is based on coupling of the fiber core and cladding modes at the splices of fibers having different refractive index profiles. We use two sources with wavelengths 1328 and 1545 nm to interrogate the sensor. The dependences of transmission on curvature at these wavelengths are significantly different. We show that the proposed sensor is able to perform measurements of curvature with radii from meters to 26 cm wit

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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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Lee, Woojin, Won-Je Lee, Sang-Bae Lee, and Rodrigo Salgado. "Measurement of pile load transfer using the Fiber Bragg Grating sensor system." Canadian Geotechnical Journal 41, no. 6 (2004): 1222–32. http://dx.doi.org/10.1139/t04-059.

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A series of laboratory and field tests were performed to evaluate the applicability of an optical fiber sensor system in the instrumentation of piles. A multiplexed sensor system, constructed by arranging several Fiber Bragg Grating (FBG) sensors along a single line of optical fiber, is capable of measuring local axial strains as a function of wavelength shifts. The distributions of axial load in three model piles and a field test pile evaluated from the strains measured by FBG sensors are found to be comparable, in terms of both magnitude and trend, with those obtained from conventional strai

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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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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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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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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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Tien, Chuen-Lin, Tzu-Chi Mao, and Chi-Yuan Li. "Lossy Mode Resonance Sensors Fabricated by RF Magnetron Sputtering GZO Thin Film and D-Shaped Fibers." Coatings 10, no. 1 (2020): 29. http://dx.doi.org/10.3390/coatings10010029.

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We demonstrate a new refractive index (RI) and salinity sensor based on a lossy mode resonance (LMR) effect which combines fiber-optic side-polishing and radio-frequency (RF) sputtering techniques. The side-polished fiber can enhance optical fibers to generate an evanescent field in sensing applications. Gallium-doped zinc oxide (GZO) thin films produce a high attenuation lossy mode resonance effect that permits a highly sensitive refractive index and salinity fiber sensor. GZO thin film was prepared by an RF magnetron sputtering method. The thickness of the D-shaped fiber sensing device was 7

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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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Saifeldeen, Mohamed A., Nariman Fouad, Huang Huang, and Zhishen Wu. "Advancement of long-gauge carbon fiber line sensors for strain measurements in structures." Journal of Intelligent Material Systems and Structures 28, no. 7 (2016): 878–87. http://dx.doi.org/10.1177/1045389x16665974.

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This article proposes a new technique that advances long-gauge carbon fiber line sensor technology, with and without post-tensioning of the sensor, to measure changes in strain levels in structural areas. Carbon fiber line sensors were fabricated to produce a slim high-strength sensor with a diameter of less than 1.4 mm using a carbon fiber tow with a width of 6 mm. A theoretical analysis of these sensors as well as several series of experiments was conducted to investigate the effect of fiber arrangement on the error compensation of the carbon fiber line sensors. The results revealed that usi

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Cao, Junming, Yuanqing Jiang, Xiaoming Li, et al. "A Flexible and Stretchable MXene/Waterborne Polyurethane Composite-Coated Fiber Strain Sensor for Wearable Motion and Healthcare Monitoring." Sensors 24, no. 1 (2024): 271. http://dx.doi.org/10.3390/s24010271.

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Fiber-based flexible sensors have promising application potential in human motion and healthcare monitoring, owing to their merits of being lightweight, flexible, and easy to process. Now, high-performance elastic fiber-based strain sensors with high sensitivity, a large working range, and excellent durability are in great demand. Herein, we have easily and quickly prepared a highly sensitive and durable fiber-based strain sensor by dip coating a highly stretchable polyurethane (PU) elastic fiber in an MXene/waterborne polyurethane (WPU) dispersion solution. Benefiting from the electrostatic r

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Engholm, Magnus, Krister Hammarling, Henrik Andersson, Mats Sandberg, and Hans-Erik Nilsson. "A Bio-Compatible Fiber Optic pH Sensor Based on a Thin Core Interferometric Technique." Photonics 6, no. 1 (2019): 11. http://dx.doi.org/10.3390/photonics6010011.

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There is an increasing demand for compact, reliable and versatile sensor concepts for pH-level monitoring within several industrial, chemical as well as bio-medical applications. Many pH sensors concepts have been proposed, however, there is still a need for improved sensor solutions with respect to reliability, durability and miniaturization but also for multiparameter sensing. Here we present a conceptual verification, which includes theoretical simulations as well as experimental evaluation of a fiber optic pH-sensor based on a bio-compatible pH sensitive material not previously used in thi

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Jiao, Tong, Chuhong Pu, Wenjing Xing, et al. "Characterization of Engineering-Suitable Optical Fiber Sensors Packaged with Glass Fiber-Reinforced Polymers." Symmetry 14, no. 5 (2022): 973. http://dx.doi.org/10.3390/sym14050973.

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Glass fiber-reinforced polymer- (GFRP-) packaged optical fiber (OF) sensors are considered a promising engineering-suitable sensor for structural health monitoring. To date, some critical characteristics of the GFRP-packaged OF (GFRP-OF) sensors have not yet been thoroughly studied. This study aimed to systematically characterize the properties of the GFRP-OF sensors. Firstly, we proposed a dimension optimization method for GFRP-OF sensors by strain transfer theory, which is based on a symmetrical three-layered cylindrical model. Then, we experimentally investigated the properties of the GFRP-

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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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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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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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Nasiri, A., S. Makouei, and T. Y. Rezaii. "Relative humidity FOS design using spherical hydrogel on no-core multimode fiber." Advanced Electromagnetics 8, no. 5 (2020): 65–71. http://dx.doi.org/10.7716/aem.v8i5.1288.

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In this paper, the design and simulation of a new optical fiber-based relative humidity (RH) sensor formed by spherical hydrogel droplets over the no-core fiber is stablished. The introduced sensor is capable of detecting humidity changes based on Evanescent waves and splice losses. Refractive index of PEGDMA hydrogel sphere changes with variation of humidity which can cause intensity changes in fiber. The sensor structure includes a no-core fiber in the length of 4 mm connected to two multimode fibers which performs sensing by three hydrogel spheres with diameter of 1 mm. The sensor operation

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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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Yu, Hui, Daifu Zheng, Yun Liu, Shimeng Chen, Xiaona Wang, and Wei Peng. "Data Glove with Self-Compensation Mechanism Based on High-Sensitive Elastic Fiber-Optic Sensor." Polymers 15, no. 1 (2022): 100. http://dx.doi.org/10.3390/polym15010100.

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With the development of virtual reality (VR) interaction technology, data glove has become one of the most popular devices for human-computer interaction. It’s valuable to design high-sensitive and flexible sensor for data glove. Therefore, a low-cost data glove based on self-compensating elastic optical fiber sensor with self-calibration function is proposed. The tunable and stretchable elastic fiber was fabricated by a simple, economical and controllable method. The fiber has good flexibility and high stability under stretching, bending and indentation deformation. The optical fibers are ins

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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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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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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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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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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. "Simulation of Fiber Bragg Grating Characteristics and Behaviors as Strain and Temperature Sensor." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (2021): 1154–61. http://dx.doi.org/10.22214/ijraset.2021.38883.

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Abstract: Optical Fiber Sensor (OFS) has come quite considerable and famous in world of sensor technology where it has been used widely to detect for a changeable environment and responds to some output on other system such as in industrial, chemical analysis and monitoring. A Fiber Bragg Grating (Fiber Bragg Grating) is a kind of appropriated where the short fragment of optical fiber which certain and specific wavelength is reflected with light and the Bragg reflector started developed and transmits all others. The current project is concerned with the development characteristics and behavior

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