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Journal articles on the topic 'Optical sensors'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Ren, Danyang, Yizhe Sun, Junhui Shi, and Ruimin Chen. "A Review of Transparent Sensors for Photoacoustic Imaging Applications." Photonics 8, no. 8 (2021): 324. http://dx.doi.org/10.3390/photonics8080324.

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Photoacoustic imaging is a new type of noninvasive, nonradiation imaging modality that combines the deep penetration of ultrasonic imaging and high specificity of optical imaging. Photoacoustic imaging systems employing conventional ultrasonic sensors impose certain constraints such as obstructions in the optical path, bulky sensor size, complex system configurations, difficult optical and acoustic alignment, and degradation of signal-to-noise ratio. To overcome these drawbacks, an ultrasonic sensor in the optically transparent form has been introduced, as it enables direct delivery of excitat

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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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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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Kitazono, Yuhki, Shota Nakashima, Li Feng Zhang, and Serikawa Seiichi. "Proposal of an Optical Linear Sensor Using One-Side Frosted Glass." Applied Mechanics and Materials 36 (October 2010): 370–75. http://dx.doi.org/10.4028/www.scientific.net/amm.36.370.

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Sensors that detect the distance and the position of an object are used in a lot of fields. Among of them, the sensors that measure the shift value of an object are a large scale system, furthermore, an accurate mounting of these sensors is required. To solve these problems, this paper proposes an optical linear sensor using one-side frosted glass. This sensor can detect the position of the light irradiation point only by putting it directly on the target. For a parallel light, it is irrelevant to the distance between this sensor and the source of light because the size of light beam is unchan

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Li, Ming, Scott K. Cushing, and Nianqiang Wu. "Plasmon-enhanced optical sensors: a review." Analyst 140, no. 2 (2015): 386–406. http://dx.doi.org/10.1039/c4an01079e.

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This paper presents a critical review of recent research progress in plasmonic sensors, plasmon-enhanced fluorescence sensors, and surface-enhanced Raman scattering sensors. It places emphasis on the sensor design strategies, and highlights the applications of sensors in healthcare, homeland security, food safety and environmental monitoring.

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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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Hulea, Mircea, Zabih Ghassemlooy, Sujan Rajbhandari, Othman Isam Younus, and Alexandru Barleanu. "Optical Axons for Electro-Optical Neural Networks." Sensors 20, no. 21 (2020): 6119. http://dx.doi.org/10.3390/s20216119.

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Recently, neuromorphic sensors, which convert analogue signals to spiking frequencies, have been reported for neurorobotics. In bio-inspired systems these sensors are connected to the main neural unit to perform post-processing of the sensor data. The performance of spiking neural networks has been improved using optical synapses, which offer parallel communications between the distanced neural areas but are sensitive to the intensity variations of the optical signal. For systems with several neuromorphic sensors, which are connected optically to the main unit, the use of optical synapses is n

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Nordmeyer, Ulrich, Niels Neumann, Xiaozhou Wang, Dirk Plettemeier, Torsten Thiel, and Konstantin Kojucharow. "Evaluation of optical fibre sensors in the electrical domain." Journal of Sensors and Sensor Systems 9, no. 2 (2020): 199–208. http://dx.doi.org/10.5194/jsss-9-199-2020.

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Abstract. Optical fibre sensors cover a wide range of applications. They offer versatile advantages including resilience to electromagnetic interference, biocompatibility and chemical resistivity. Even in environments with restricted accessibility, integration difficulties can be overcome by using radio-over-fibre (RoF) technology that allows a wireless read-out. Conventionally, optical fibre sensors are evaluated in the optical domain by analysing the amplitude or spectrum of either the transmitted or the reflected light. A novel approach is to feed a radio frequency-modulated laser into the

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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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Zheng, Yani, Gaurav Dhiman, Ashutosh Sharma, Amit Sharma, and Mohd Asif Shah. "An IoT-Based Water Level Detection System Enabling Fuzzy Logic Control and Optical Fiber Sensor." Security and Communication Networks 2021 (August 27, 2021): 1–11. http://dx.doi.org/10.1155/2021/4229013.

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The usage of wireless sensors has become widespread for the collection of data for various Internet of Things (IoT) products. Specific wireless sensors use optical fiber technology as transmission media and lightwave signals as carriers, showing the advantages of antielectromagnetic interference, high sensitivity, and strong reliability. Hence, their application in IoT systems becomes a research hotspot. In this article, multiple optical fiber sensors are constructed as an IoT detection system, and a Transmission Control Protocol (TCP)/Internet Protocol (IP) communication stack is used for the

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Petrović, Davor, and Željko Barač. "Different Sensor Systems for the Application of Variable Rate Technology in Permanent Crops." Tehnički glasnik 12, no. 3 (2018): 188–95. http://dx.doi.org/10.31803/tg-20180213125928.

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The paper presents a review of different sensory systems for trees’ characterization and detection in permanent crops and the detection of plant health status in crop conditions for the purpose of applying the variable application rate. The use of new technologies enables the use of variable inputs in production with the aim of increasing the economic profit and reducing the negative impact on the environment. World trends increasingly emphasize the use of various sensor systems to achieve precision agriculture and apply the following: ultrasonic sensors for the detection of permanent crops; L

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Khryapov, Vladimir T. "Optical sensors." Optical Engineering 31, no. 4 (1992): 678. http://dx.doi.org/10.1117/12.56113.

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Wolfbeis, Otto S., and Hermann E. Posch. "Optical sensors." Fresenius' Zeitschrift für analytische Chemie 332, no. 3 (1988): 255–57. http://dx.doi.org/10.1007/bf00492971.

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Harnett, Cindy. "Making Soft Optical Sensors More Wearable." MRS Advances 5, no. 18-19 (2020): 1017–22. http://dx.doi.org/10.1557/adv.2020.64.

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ABSTRACTThis paper discusses new components and approaches to make stretchable optical fiber sensors better meet the power and washability requirements of wearables. First, an all-polymer quick connector allows the light source and photosensor to be quickly detached for washing. Second, the paper investigates the possibility of driving the sensors using ambient light instead of an onboard light source. While optical strain sensors and touch sensors have advantages over electronic ones in wet environments, and the intrinsic stretchability of the fibers is useful for soft robotics and highly con

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Lee, Hyun-Woo, Dae-Hyun Kim, and Sangwoo Shin. "Low-Cost Angle Sensor for Robotics Applications Using Plastic Optical Fiber Based on Optical Loss Mechanism." Biomimetics 8, no. 8 (2023): 567. http://dx.doi.org/10.3390/biomimetics8080567.

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Robotic systems and the human body consist of numerous joint structures, all of which require precise angle adjustments. At present, encoder, strain gauge, and electrical resistance-based sensors are commonly used for angle measurement. However, these sensors have limitations when used in underwater or in environments with strong electromagnetic waves. Therefore, we have developed an angle sensor based on step-index profile plastic optical fiber (SI-POF), which is cost-effective and highly durable, in this study in order to overcome the limitations of existing angle measurement sensors. To thi

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Al-Ashwal, Nagi H., Khaled A. M. Al Soufy, Mohga E. Hamza, and Mohamed A. Swillam. "Deep Learning for Optical Sensor Applications: A Review." Sensors 23, no. 14 (2023): 6486. http://dx.doi.org/10.3390/s23146486.

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Over the past decade, deep learning (DL) has been applied in a large number of optical sensors applications. DL algorithms can improve the accuracy and reduce the noise level in optical sensors. Optical sensors are considered as a promising technology for modern intelligent sensing platforms. These sensors are widely used in process monitoring, quality prediction, pollution, defence, security, and many other applications. However, they suffer major challenges such as the large generated datasets and low processing speeds for these data, including the high cost of these sensors. These challenge

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Murayama, Hideaki, Kazuro Kageyama, Isamu Ohsawa, Makoto Kanai, Kiyhoshi Uzawa, and Tsuyoshi Matsuo. "Development of Smart Composite Panel with Optical Fiber Sensors." Key Engineering Materials 297-300 (November 2005): 659–64. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.659.

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We have developed a novel fiber-optic vibration sensors and applied commercially available strain and temperature sensors to health monitoring of composite structures. In this study, we constructed an optical fiber network integrating four types of optical fiber sensor into a carbon reinforced plastic (CFRP) panel. These four sensors were the vibration sensor developed by our laboratory, two distributed sensors based on Brillouin and Raman backscattering and Fiber Bragg Grating (FBG) sensors. By dealing the data obtained from the measurement systems corresponding to these four sensors, strain/

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Ando, Masanori, Hideya Kawasaki, Satoru Tamura, Yoshikazu Haramoto, and Yasushi Shigeri. "Recent Advances in Gas Sensing Technology Using Non-Oxide II-VI Semiconductors CdS, CdSe, and CdTe." Chemosensors 10, no. 11 (2022): 482. http://dx.doi.org/10.3390/chemosensors10110482.

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In recent years, there has been an increasing need and demand for gas sensors to detect hazardous gases in the atmosphere, as they are indispensable for environmental monitoring. Typical hazardous gas sensors that have been widely put to practical use include conductometric gas sensors, such as semiconductor gas sensors that use the change in electrical resistance of metal oxide semiconductors, catalytic combustion gas sensors, and electrochemical gas sensors. However, there is a growing demand for gas sensors that perform better and more safely, while also being smaller, lighter, less energy-

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Rai, Vineet Kumar. "Temperature sensors and optical sensors." Applied Physics B 88, no. 2 (2007): 297–303. http://dx.doi.org/10.1007/s00340-007-2717-4.

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Fischer, Jakob, Timo Schuster, Christian Wächter, et al. "Isolated sensor networks for high-voltage environments using a single polymer optical fiber and LEDs for remote powering as well as data transmission." Journal of Sensors and Sensor Systems 7, no. 1 (2018): 193–206. http://dx.doi.org/10.5194/jsss-7-193-2018.

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Abstract. Many applications in high voltage or explosive environments require sensors which are electrically isolated from other components of a system. These sensors need remote powering as well as wireless or isolated data transmission links. A possible solution can be based on optically powered optical sensor links. These typically employ four different photonic components: for the data communication a fast LED as a transmitter and a photo diode as a receiver, furthermore for sensor powering a high-power light source and a photonic power converter. Additionally, two optical fibers are requi

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Okura, Ichiro. "Overview of optical sensors using porphyrins." Journal of Porphyrins and Phthalocyanines 06, no. 04 (2002): 268–70. http://dx.doi.org/10.1142/s1088424602000300.

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To meet recent requirement of sensors, new optical sensor technology by molecules of functional chemical compounds as nano-scale sensor probes is developing. In this overview, the background and the concept of optical sensor technology are briefly introduced and a new optical sensing system by triplet-triplet absorption is discussed as an example.

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Di Patrizio Stanchieri, Guido Di Patrizio, Moustafa Saleh, Andrea De De Marcellis, et al. "FPGA-Based Tactile Sensory Platform with Optical Fiber Data Link for Feedback Systems in Prosthetics." Electronics 12, no. 3 (2023): 627. http://dx.doi.org/10.3390/electronics12030627.

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In this paper, we propose and validate a tactile sensory feedback system for prosthetic applications based on an optical communication link. The optical link features a low power and wide transmission bandwidth, which makes the feedback system suitable for a large number and variety of tactile sensors. The low-power transmission is derived from the employed UWB-based optical modulation technique. A system prototype, consisting of digital transmitter and receiver boards and acquisition circuits to interface 32 piezoelectric sensors, was implemented and experimentally tested. The system function

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Mansour, Rima, Catarina Serafinelli, Alessandro Fantoni, and Rui Jesus. "An affordable optical detection scheme for LSPR sensors." EPJ Web of Conferences 305 (2024): 00025. http://dx.doi.org/10.1051/epjconf/202430500025.

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Biosensing technologies are essential for advancing healthcare by enabling rapid point-of-care (POC) testing and diagnosis, potentially saving lives. Biosensors, such as Localized Surface Plasmon Resonance (LSPR) sensors with gold nanoparticles (AuNPs), show promise in early disease diagnosis due to their simple structure and high sensitivity. However, their commercialization is limited by high production costs and the need for precise optoelectronic systems. This article proposes an affordable optical detection scheme for LSPR sensors named BioColor. BioColor uses a color CMOS camera to captu

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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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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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Caroleo, Fabrizio, Gabriele Magna, Mario Luigi Naitana, et al. "Advances in Optical Sensors for Persistent Organic Pollutant Environmental Monitoring." Sensors 22, no. 7 (2022): 2649. http://dx.doi.org/10.3390/s22072649.

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Optical chemical sensors are widely applied in many fields of modern analytical practice, due to their simplicity in preparation and signal acquisition, low costs, and fast response time. Moreover, the construction of most modern optical sensors requires neither wire connections with the detector nor sophisticated and energy-consuming hardware, enabling wireless sensor development for a fast, in-field and online analysis. In this review, the last five years of progress (from 2017 to 2021) in the field of optical chemical sensors development for persistent organic pollutants (POPs) is provided.

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Chen, Yongzhang, Yiwen Zheng, Haibing Xiao, et al. "Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer." Sensors 22, no. 15 (2022): 5748. http://dx.doi.org/10.3390/s22155748.

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Optical fiber Fabry–Perot sensors have long been the focus of researchers in sensing applications because of their unique advantages, including highly effective, simple light path, low cost, compact size, and easy fabrication. Microcantilever-based devices have been extensively explored in chemical and biological fields while the interrogation methods are still a challenge. The optical fiber probe microcantilever sensor is constructed with a microcantilever beam on an optical fiber, which opens the door for highly sensitive, as well as convenient readout. In this review, we summarize a wide va

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Li, Xiangmeng, Yongzhen Li, Huifen Wei, Chaohui Wang, and Bo Liu. "A Review of Wearable Optical Fiber Sensors for Rehabilitation Monitoring." Sensors 24, no. 11 (2024): 3602. http://dx.doi.org/10.3390/s24113602.

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As the global aging population increases, the demand for rehabilitation of elderly hand conditions has attracted increased attention in the field of wearable sensors. Owing to their distinctive anti-electromagnetic interference properties, high sensitivity, and excellent biocompatibility, optical fiber sensors exhibit substantial potential for applications in monitoring finger movements, physiological parameters, and tactile responses during rehabilitation. This review provides a brief introduction to the principles and technologies of various fiber sensors, including the Fiber Bragg Grating s

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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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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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Guzowski, Bartlomiej, and Mateusz Łakomski. "Temperature Sensor Based on Periodically Tapered Optical Fibers." Sensors 21, no. 24 (2021): 8358. http://dx.doi.org/10.3390/s21248358.

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In this paper, the fabrication and characterization of a temperature sensor based on periodically tapered optical fibers (PTOF) are presented. The relation between the geometry of the sensors and sensing ability was investigated in order to find the relatively simple structure of a sensor. Four types of PTOF structures with two, four, six and eight waists were manufactured with the fusion splicer. For each PTOF type, the theoretical free spectral range (FSR) was calculated and compared with measurements. The experiments were conducted for a temperature range of 20–70 °C. The results proved tha

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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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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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Lopez Aldaba, Aitor, Diego Lopez-Torres, Miguel Campo-Bescós, et al. "Comparison between Capacitive and Microstructured Optical Fiber Soil Moisture Sensors." Applied Sciences 8, no. 9 (2018): 1499. http://dx.doi.org/10.3390/app8091499.

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Soil moisture content has always been an important parameter to control because it is a deterministic factor for site-specific irrigation, seeding, transplanting, and compaction detection. In this work, a discrete sensor that is based on a SnO2–FP (Fabry-Pérot) cavity is presented and characterized in real soil conditions. As far as authors know, it is the first time that a microstructured optical fiber is used for real soil moisture measurements. Its performance is compared with a commercial capacitive soil moisture sensor in two different soil scenarios for two weeks. The optical sensor show

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Tjiptoyuda, Wahyu Pamungkas, Mas Aly Afandi, Sarah Astiti, et al. "Research in Electronic Multi-Sensor Accuracy in the Implementation of Soil Fertility Monitoring System Using LoRA." International Journal on Advanced Science, Engineering and Information Technology 13, no. 6 (2023): 2397–406. http://dx.doi.org/10.18517/ijaseit.v13i6.18836.

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The use of electronic sensors to track the nutrients in the soil is an interesting tool for farmers. This has led to the sale of many different kinds of electronic sensors with different levels of accuracy. The accuracy of this electronic sensor was figured out by comparing the results of the sensor's measurements with the results of lab tests done in different ways. This study compares the accuracy of electronic devices used to measure soil nutrients like nitrogen, phosphorus, potassium, electrical conductivity, water pH, and humidity to measurements made in the lab using the ICP-OES (Inducti

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Tjiptoyuda, Wahyu Pamungkas, Mas Aly Afandi, Sarah Astiti, et al. "Research in Electronic Multi-Sensor Accuracy in the Implementation of Soil Fertility Monitoring System Using LoRA." International Journal on Advanced Science, Engineering and Information Technology 13, no. 6 (2023): 2397–406. http://dx.doi.org/10.18517/ijaseit.13.6.18836.

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The use of electronic sensors to track the nutrients in the soil is an interesting tool for farmers. This has led to the sale of many different kinds of electronic sensors with different levels of accuracy. The accuracy of this electronic sensor was figured out by comparing the results of the sensor's measurements with the results of lab tests done in different ways. This study compares the accuracy of electronic devices used to measure soil nutrients like nitrogen, phosphorus, potassium, electrical conductivity, water pH, and humidity to measurements made in the lab using the ICP-OES (Inducti

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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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Khakurel, Prathana, Larry Leigh, Morakot Kaewmanee, and Cibele Teixeira Pinto. "Extended Pseudo Invariant Calibration Site-Based Trend-to-Trend Cross-Calibration of Optical Satellite Sensors." Remote Sensing 13, no. 8 (2021): 1545. http://dx.doi.org/10.3390/rs13081545.

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Satellite sensors have been extremely useful and are in massive demand in the understanding of the Earth’s surface and monitoring of changes. For quantitative analysis and acquiring consistent measurements, absolute radiometric calibration is necessary. The most common vicarious approach of radiometric calibration is cross-calibration, which helps to tie all the sensors to a common radiometric scale for consistent measurement. One of the traditional methods of cross-calibration is performed using temporally and spectrally stable pseudo-invariant calibration sites (PICS). This technique is limi

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Maslennikov, Aleksandr, Ilya Zubkov, and S. Kovalenko. "Optical chemical sensor for solving gas analysis tasks." MATEC Web of Conferences 212 (2018): 01029. http://dx.doi.org/10.1051/matecconf/201821201029.

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A brief review of the principles of constructing optical gas-analyzing sensors is presented. It is noted that the influence of humidity of the surrounding gas environment during gas analytical procedures using solid-state gas analytical sensors is a serious technological problem. It is shown that sensors of particular interest are functioning on the principle of absorption of the primary light flux because of their reduced sensitivity to fluctuations in the humidity of the carrier gas. The design and the gas analytical properties of an optical chemical sensor are described. Ammonia was used as

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Jobert, Gabriel, Pierre Barritault, Maryse Fournier, et al. "Miniature Optical Particle Counter and Analyzer Involving a Fluidic-Optronic CMOS Chip Coupled with a Millimeter-Sized Glass Optical System." Sensors 21, no. 9 (2021): 3181. http://dx.doi.org/10.3390/s21093181.

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Our latest advances in the field of miniaturized optical PM sensors are presented. This sensor combines a hybrid fluidic-optronic CMOS (holed retina) that is able to record a specific irradiance pattern scattered by an illuminated particle (scattering signature), while enabling the circulation of particles toward the sensing area. The holed retina is optically coupled with a monolithic, millimeter-sized, refracto-reflective optical system. The latter notably performs an optical pre-processing of signatures, with a very wide field of view of scattering angles. This improves the sensitivity of t

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Costa, M. M., and J. C. W. A. Costa. "Identification and evaluation of uncertainty contributions to optical current sensor measurement uncertainty." Journal of Physics: Conference Series 2606, no. 1 (2023): 012033. http://dx.doi.org/10.1088/1742-6596/2606/1/012033.

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Abstract Optical current sensors can replace traditional current sensor due to their several advantages, as electromagnetic immunity, low dimensions, low cost and others. One of the current main challenges is to develop optical current sensors with good accuracy and stability. This paper presents identification and evaluation of uncertainty contributions to measurement uncertainty evaluation of optical current sensors based on Faraday effect.

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Jones, Thomas P., and Marc D. Porter. "An Optical Sensor Based on Infrared Spectroscopy." Applied Spectroscopy 43, no. 6 (1989): 908–11. http://dx.doi.org/10.1366/0003702894203822.

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A thin-film pH sensor based on vibrational spectroscopy has been developed. The sensor was constructed by the immobilization of Congo Red at a base-hydrolyzed cellulose acetate film that had been coated onto a ZnSe internal reflection element. The protonation of the azo groups of Congo Red was monitored as a function of pH with infrared internal reflection spectroscopy. The response characteristics of this sensor demonstrate the potential utility of applying infrared spectroscopy to detect the response of thin film sensors. Opportunities to design sensors based on the molecular specificity of

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Mohamad, Mazuina, and Hadi Manap. "An Overview of Optical Fibre Sensors for Medical Applications." International Journal of Engineering Technology and Sciences 1, no. 1 (2014): 9–11. http://dx.doi.org/10.15282/ijets.1.2014.1.3.1003.

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Optical techniques developed for sensing purposes proved to be completely realized in many application fields, ranging from aerospace, industry, process control and medical. The capabilities of these sensors are generally enhanced when a bulk optical fibre technology. There is a growing need for a real time and low cost technology because of the expense and time constraints associated with modern laboratory analysis. This us certainly due the growing interest in aptoelectronics, but also the very satisfactory performance and reliability that optical fibre sensor are now able to provide. This p

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Villemin, Elise, and Olivier Raccurt. "Optical lithium sensors." Coordination Chemistry Reviews 435 (May 2021): 213801. http://dx.doi.org/10.1016/j.ccr.2021.213801.

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TAMURA, T. "Fiber Optical Sensors." JAPANES JOURNAL OF MEDICAL INSTRUMENTATION 68, no. 8 (1998): 341–46. http://dx.doi.org/10.4286/ikakikaigaku.68.8_341.

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Siyal, Arihant. "Optical Distance Sensors." Acta Mechanica Slovaca 25, no. 3 (2021): 28–32. http://dx.doi.org/10.21496/ams.2021.034.

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Aizawa, Masuo. "Optical Chemical Sensors." Materia Japan 34, no. 11 (1995): 1233–37. http://dx.doi.org/10.2320/materia.34.1233.

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Fernando, G. F., D. J. Webb, and Pierre Ferdinand. "Optical-Fiber Sensors." MRS Bulletin 27, no. 5 (2002): 359–64. http://dx.doi.org/10.1557/mrs2002.120.

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AbstractThe primary aim of this issue of MRS Bulletin is to present an overview of the deployment of optical-fiber sensors in a selected range of applications. The topics covered include a general introduction to optical fibers; a review of the sensing mechanisms that are available to monitor strain, temperature, pressure, chemical species, damage, and acoustic emission; and the use of optical-fiber sensors in medical applications. This introductory article presents a brief discussion of the advantages and disadvantages of optical-fiber sensors.

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HOTATE, Kazuo. "Optical Fiber Sensors." Review of Laser Engineering 41, no. 5 (2013): 307. http://dx.doi.org/10.2184/lsj.41.5_307.

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Simarjeet Singh Saini, Aneesh Sridhar, and Kulbir Ahluwalia. "Smartphone Optical Sensors." Optics and Photonics News 30, no. 2 (2019): 34. http://dx.doi.org/10.1364/opn.30.2.000034.

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