Wyniki wyszukiwania dla: fiber-optics sensors - MOST Wiedzy

Wyszukiwarka

Wyniki wyszukiwania dla: fiber-optics sensors

Wyniki wyszukiwania dla: fiber-optics sensors

  • Short and Long Term Measurements in Assessment of FRP Composite Footbridge Behavior

    The paper presents application of different sensors for the purpose of short and long term measurements, as well as a structural health monitoring (SHM) system to assess the behavior of a novel fiber reinforced plastics (FRP) composite footbridge. The aim is to present a thorough and concise description of these sensors networks and results gathered with their aid during in situ measurement of strains, displacements, and vibrations,...

    Pełny tekst do pobrania w portalu

  • Microsphere structure application for supercapacitor in situ temperature monitoring

    Publikacja

    Constant, real-time temperature monitoring of the supercapacitors for efficient energy usage is in high demand and seems to be crucial for further development of those elements. A fiber-optic sensor can be an effective optoelectronic device dedicated for in-situ temperature monitoring of supercapacitors. In this work, the application of the fiber-optic microstrucutre with thin zinc oxide (ZnO) coating fabricated in the atomic layer...

    Pełny tekst do pobrania w portalu

  • Response of a New Low-Coherence Fabry-Perot Sensor to Hematocrit Levels in Human Blood

    Publikacja

    - SENSORS - Rok 2014

    In this paper, a low-coherence Fabry-Perot sensor with a spectrally measured signal processing response to the refractive index of liquids is presented. Optical fiber sensors are potentially capable of continuous measuring hematocrit levels in blood. Low-coherence Fabry-Perot interferometric sensors offer a robust solution, where information about the measurand is encoded in the full spectrum of light reflected from the sensing...

    Pełny tekst do pobrania w portalu

  • Screw displacement pile shaft deformations measured by vibrating wire and fiber optic systems during a static load test

    Publikacja

    This paper describes a full scale static load test performed on a 400 mm diameter screw displacement pile equipped with four different strain measuring systems. Three types of vibrating wire strain gauges (VWSG) were used: global - retrievable, local attached to steel pipe and local concrete embedded. The fourth system was distributed fiber optic sensors based on Rayleigh back scattering (DFOS) - three in the pile cross section....

    Pełny tekst do pobrania w portalu

  • 5G/6G optical fronthaul modeling: cost and energy consumption assessment

    In fifth generation (5G) and the future beyond 5G (6G) radio access networks (RANs), the cost of fronthaul deployment is a main challenge for mobile network operators. Depending on different constraints, there are various solutions to deploy an efficient fronthaul. Fiber-optic-based fronthaul offers long-term support with regard to a rapid increase in capacity demands. When fiber connections, either point-to-point (P2P) or point-to-multipoint...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • On-line measurement of wood surface smoothness

    Publikacja

    - Drvna Industrija - Rok 2020

    The latest progress in the field of optics and microelectronics resulted in development of new generation vision systems capable of scanning surface topography with very high sampling frequencies. The blue color of illuminating light as well as novel systems for controlling ultra-thin laser line thickness allows measurement of the porous surface of wood with a triangulation method. Three alternative sensors were tested here in...

    Pełny tekst do pobrania w portalu

  • Nitrogen-Doped Diamond Film for Optical Investigation of Hemoglobin Concentration

    Publikacja

    - Materials - Rok 2018

    In this work we present the fabrication and characterization of a diamond film which can be utilized in the construction of optical sensors for the investigation of biological samples. We produced a nitrogen-doped diamond (NDD) film using a microwave plasma enhanced chemical vapor deposition (MWPECVD) system. The NDD film was investigated with the use of scanning electron microscopy (SEM), atomic force microscopy (AFM) and Raman...

    Pełny tekst do pobrania w portalu

  • BP-EVD: Forward Block-Output Propagation for Efficient Video Denoising

    Denoising videos in real-time is critical in many applications, including robotics and medicine, where varying light conditions, miniaturized sensors, and optics can substantially compromise image quality. This work proposes the first video denoising method based on a deep neural network that achieves state-of-the-art performance on dynamic scenes while running in real-time on VGA video resolution with no frame latency. The backbone...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • BPL-PLC Voice Communication System for the Oil and Mining Industry

    Publikacja
    • G. Debita
    • P. Falkowski-Gilski
    • M. Habrych
    • G. Wiśniewski
    • B. Miedziński
    • P. Jedlikowski
    • A. Waniewska
    • J. Wandzio
    • B. Polnik

    - ENERGIES - Rok 2020

    Application of a high-efficiency voice communication systems based on broadband over power line-power line communication (BPL-PLC) technology in medium voltage networks, including hazardous areas (like the oil and mining industry), as a redundant mean of wired communication (apart from traditional fiber optics and electrical wires) can be beneficial. Due to the possibility of utilizing existing electrical infrastructure, it can...

    Pełny tekst do pobrania w portalu

  • Cost-Efficient Optical Fronthaul Architectures for 5G and Future 6G Networks

    Publikacja

    - Rok 2022

    Fifth-generation and Beyond (5GB) wireless networks have introduced new centralized architectures such as cloud radio access network (CRAN), which necessitate extremely high-capacity low latency Fronthaul (FH). CRAN has many advantageous features in terms of cost reduction, performance enhancement, ease of deployment, and centralization of network management. Nevertheless, designing and deploying a cost-efficient FH is still a...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Functional fluorine-doped tin oxide coating for opto-electrochemical label-free biosensors

    Publikacja
    • D. Burnat
    • P. Sezemsky
    • K. Lechowicz
    • M. Koba
    • M. Janczuk-Richter
    • M. Janik
    • V. Stranak
    • J. Niedziółka-Jönsson
    • R. Bogdanowicz
    • M. Śmietana

    - SENSORS AND ACTUATORS B-CHEMICAL - Rok 2022

    Sensors operating in multiple domains, such as optical and electrochemical, offer properties making biosensing more effective than those working in a single domain. To combine such domains in one sensing device, materials offering a certain set of properties are required. Fluorine-doped tin oxide (FTO) thin film is discussed in this work as functional optically for guiding lossy modes and simultaneously electrochemically, i.e....

    Pełny tekst do pobrania w portalu

  • Application of boron-doped diamond film and ZnO layer in the Fabry-Pérot interferometer

    Publikacja

    In this article there have been presented the use of boron-doped diamond films for sensor applications. The low-finesse Fabry-Pérot interferometer working in the reflective mode has been implemented. Two kinds of reflective layers have been elaborated: boron-doped diamond thin films and zinc-oxide (ZnO) layer. Thin ZnO layers were deposited by Atomic Layer Deposition (ALD) on the face of a standard telecommunication single-mode...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Tuning of the finesse coefficient of optoelectronic devices

    Publikacja

    - Rok 2022

    Optoelectronic devices attracted considerable attention in many branches of science and technology, which can be attributed to their unique properties. Many of them use optical cavities which parameters can be adopted to specific requirements. This thesis investigates the introduction of diamond structures (nitrogen-doped diamond film, boron-doped diamond film, undoped diamond sheet) to optical cavities to tune their finesse coefficient....

    Pełny tekst do pobrania w portalu

  • Adam Władziński

    Osoby

    Adam Władziński, doktorant na Politechnice Gdańskiej, specjalizuje się w inżynierii biomedycznej, skupiając się na uczeniu maszynowym do przetwarzania obrazów z druku 3D układów pomiarowych i tkanek biologicznych, a także na komercyjnym zastosowaniu technologii blockchain. Posiadając wykształcenie z dziedziny elektroniki na Wydziale Elektroniki, Telekomunikacji i Informatyki (ETI), praca magisterska Adama Władzińskiego koncentrowała...

  • Sensitive Demonstration of the Twin-Core Couplers including Kerr Law Non-Linearity via Beta Derivative Evolution

    Publikacja

    - Fractal and Fractional - Rok 2022

    To obtain new solitary wave solutions for non-linear directional couplers using optical meta-materials, a new extended direct algebraic technique (EDAT) is used. This model investigates solitary wave propagation inside a fiber. As a result, twin couplers are the subject of this study. Kerr law is the sort of non-linearity addressed there. Because it offers solutions to problems with large tails or infinite fluctuations, the resulting...

    Pełny tekst do pobrania w portalu

  • SENSORS AND ACTUATORS B-CHEMICAL

    Czasopisma

    ISSN: 0925-4005

  • Sensors and System for Vehicle Navigation

    Publikacja

    - SENSORS - Rok 2022

    In recent years, vehicle navigation, in particular autonomous navigation, has been at the center of several major developments, both in civilian and defense applications. New technologies, such as multisensory data fusion, big data processing, or deep learning, are changing the quality of areas of applications, improving the sensors and systems used. Recently, the influence of artificial intelligence on sensor data processing and...

    Pełny tekst do pobrania w portalu

  • Imaging polarimeter with high-accuracy measuring principles in crystal optics

    Publikacja

    - OPTO-ELECTRONICS REVIEW - Rok 2022

    An imaging polarimeter based on the principles of high-accuracy polarimetry well known in crystal optics is proposed. The application of scientific digital cameras for performance light measurements leads to precise data on polarizers quality, i.e., maps of extinction ratio and transmission axis. Processing of numerous images, acquired at various settings in the polarizer-sample-analyser system, allows to determine the two-dimensional...

    Pełny tekst do pobrania w portalu

  • Efficient quadrature for fast oscillating integralof paraxial optics

    Publikacja

    The study concerns the determination of quadrature for the integral solutionof the paraxial wave equation. The difficulty in computation of the integral isassociated with the rapid change of the integrand phase. The developed quadraturetakes into account the fast oscillating character of the integrand. The presentedmethod is an alternative to the commonly used methods based on the use of theFourier transform. The determination...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Sensors and Sensor’s Fusion in Autonomous Vehicles

    Publikacja

    - SENSORS - Rok 2021

    Autonomous vehicle navigation has been at the center of several major developments, both in civilian and defense applications. New technologies such as multisensory data fusion, big data processing, and deep learning are changing the quality of areas of applications, improving the sensors and systems used. New ideas such as 3D radar, 3D sonar, LiDAR, and others are based on autonomous vehicle revolutionary development. The Special...

    Pełny tekst do pobrania w portalu

  • IEEE SENSORS JOURNAL

    Czasopisma

    ISSN: 1530-437X , eISSN: 1558-1748

  • Magnetically sensitive fiber probe with nitrogen-vacancy center nanodiamonds integrated in a suspended core

    Publikacja
    • A. Filipkowski
    • M. Mrózek
    • G. Stępniewski
    • M. J. Głowacki
    • D. Pysz
    • W. Gawlik
    • R. Buczyński
    • M. Klimczak
    • A. M. Wojciechowski

    - OPTICS EXPRESS - Rok 2022

    Efficient collection of photoluminescence arising from spin dynamics of nitrogen vacancy (NV) centers in diamond is important for practical applications involving precise magnetic field or temperature mapping. These goals may be realized by the integration of nanodiamond particles with optical fibers and volumetric doping of the particles alongside the fiber core. That approach combines the advantages of robust axial fixation of...

    Pełny tekst do pobrania w portalu

  • High-accuracy computation of hard X-ray focusing and imaging for refractive optics

    Publikacja

    - JOURNAL OF SYNCHROTRON RADIATION - Rok 2021

    A mathematical apparatus for solving problems of X-ray wave propagation through complex optical systems, when the lens thickness can change with jumps, is developed and presented. The developed method is based on the use of the superposition of oriented Gaussian beams, which satisfy the Helmholtz equation with high accuracy. The wave propagation in air and through kinoform and ordinary lenses is considered. Focusing and imaging...

    Pełny tekst do pobrania w portalu

  • Shrinking-shifting and amplifying-shifting device using transformation optics

    Publikacja

    - OPTICAL AND QUANTUM ELECTRONICS - Rok 2022

    Based on transformation optics (TO), this paper uses geometric divisions and linear coordinate transformations to design “shrinking-shifting—and reshaping”, and “amplifying-shifting—and reshaping” devices. The proposed devices can reshape the sizes and locations of the wrapped-objects inside the core-region. The shrinking-shifting device shrinks the larger object into a smaller one and shifts it to different location, whereas the...

    Pełny tekst do pobrania w portalu

  • Electrochemically directed biofunctionalization of a lossy-mode resonance optical fiber sensor

    Publikacja
    • M. Janik
    • P. Niedziałkowski
    • K. Lechowicz
    • M. Koba
    • P. Sezemsky
    • V. Stranak
    • T. Ossowski
    • M. Śmietana

    - OPTICS EXPRESS - Rok 2020

    In this work, we present a direct electrochemical biofunctionalization of an indium-tin-oxide-coated lossy-mode resonance optical fiber sensor. The functionalization using a biotin derivative was performed by cyclic voltammetry in a 10 mM biotin hydrazide solution. All stages of the experiment were simultaneously verified with optical and electrochemical techniques. Performed measurements indicate the presence of a poly-biotin...

    Pełny tekst do pobrania w portalu

  • Rengel Cane Sia Doctoral Candidate

    Osoby

    I'm Rengel, born and raised in the Philippines. As an undergraduate I did kinetic modeling on Copper-catalyzed atom transfer radical addition (ATRA). Then I was inspired to do both theoretical and experimental studies, which led me to propose my master's thesis on Synthesis, Computational, Electrochemical, and Photoconductivity Studies on Naphthalene and its derivatives. This led to a master's degree in Chemistry in the Mindanao...

  • An adaptive-noise Augmented Kalman Filter approach for input-state estimation in structural dynamics

    Publikacja
    • S. Vettori
    • E. Di Lorenzo
    • B. Peeters
    • M. Łuczak
    • E. Chatzi

    - MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Rok 2023

    The establishment of a Digital Twin of an operating engineered system can increase the potency of Structural Health Monitoring (SHM) tools, which are then bestowed with enhanced predictive capabilities. This is particularly relevant for wind energy infrastructures, where the definition of remaining useful life is a main driver for assessing the efficacy of these systems. In order to ensure a proper representation of the physical...

    Pełny tekst do pobrania w portalu

  • Identification of defected sensors in an array of amperometric gas sensors

    Purpose Amperometric gas sensors are commonly used in air quality monitoring in long-term measurements. Baseline shift of sensor responses and power failure may occur over time, which is an obstacle for reliable operation of the entire system. The purpose of this study is to check the possibility of using PCA method to detect defected samples, identify faulty sensor and correct the responses of the sensor identified as faulty. Design/methodology/approach In...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Application of Thin ZnO ALD Layers in Fiber-Optic Fabry-Pérot Sensing Interferometers

    Publikacja

    - SENSORS - Rok 2016

    In this paper we investigated the response of a fiber-optic Fabry-Pérot sensing interferometer with thin ZnO layers deposited on the end faces of the optical fibers forming the cavity. Standard telecommunication single-mode optical fiber (SMF-28) segments were used with the thin ZnO layers deposited by Atomic Layer Deposition (ALD). Measurements were performed with the interferometer illuminated by two broadband sources operating...

    Pełny tekst do pobrania w portalu

  • OPTICS EXPRESS

    Czasopisma

    ISSN: 1094-4087

  • Broadband fiber optic communication systems

    Kursy Online
    • M. Szczerska

  • SENSORS AND ACTUATORS A-PHYSICAL

    Czasopisma

    ISSN: 0924-4247

  • A Review of Emotion Recognition Methods Based on Data Acquired via Smartphone Sensors

    Publikacja

    In recent years, emotion recognition algorithms have achieved high efficiency, allowing the development of various affective and affect-aware applications. This advancement has taken place mainly in the environment of personal computers offering the appropriate hardware and sufficient power to process complex data from video, audio, and other channels. However, the increase in computing and communication capabilities of smartphones,...

    Pełny tekst do pobrania w portalu

  • Optical fiber aptasensor for label-free bacteria detection in small volumes

    Publikacja

    - SENSORS AND ACTUATORS B-CHEMICAL - Rok 2021

    Highly sensitive devices for fast bacteria detection are sought to be developed with the task of quantifying the worldwide problem of pathogenic bacteria and thus helping to take control over spreading bacterial infections. This work concerns a sensing solution based on microcavity in-line Mach-Zehnder interferometer (μIMZI) induced in an optical fiber. Such a device exhibits ultrahigh sensitivity to refractive index changes...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Flicker Noise in Resistive Gas Sensors—Measurement Setups and Applications for Enhanced Gas Sensing

    Publikacja

    - SENSORS - Rok 2024

    We discuss the implementation challenges of gas sensing systems based on low-frequency noise measurements on chemoresistive sensors. Resistance fluctuations in various gas sensing materials, in a frequency range typically up to a few kHz, can enhance gas sensing by considering its intensity and the slope of power spectral density. The issues of low-frequency noise measurements in resistive gas sensors, specifically in two-dimensional...

    Pełny tekst do pobrania w portalu

  • Gas mixtures recognition using an array of amperometric gas sensors with drifting or faulty sensors

    In this study, the possibility of using selected methods for diagnostics of performance of matrix composed with six amperometric electrochemical gas sensors is investigated. Measurements of sensor responses in selected concentrations of single toxic gases or gas mixtures were performed and were repeated over time to show sensor drift. Additionally, the studies on the sensors’ drift were performed. The drift has been recognized...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Fiber optic displacement sensor with signal analysis in spectral domain

    Publikacja

    In this paper, a study of a low-coherence fiber optic displacement sensor is presented. The sensor consisted of a broadband source whose central wavelength was either at 1310 nm or 1550 nm, a sensing Fabry-Pérot interferometer operating in reflective mode and an optical spectrum analyzer acting as the detection setup. All these components were connected by a single-mode fiber coupler. Metrological parameters of the sensor were...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Highly sensitive microwave sensors based on open complementary square split-ring resonator for sensing liquid materials

    Publikacja

    - SENSORS - Rok 2024

    This paper presents high-sensitivity sensors based on open complementary square split-ring resonator and modified open complementary split-ring resonator operating at 4.5 GHz and 3.4 GHz, respectively. The sensors are designed for the detection of multiple liquid materials, including distilled water, methanol, and ethanol. The liquid under test is filled in a glass container loaded using a pipette. Compared to the conventional...

    Pełny tekst do pobrania w portalu

  • Taguchi sensors under temperature modulation

    Publikacja

    - Rok 2013

    Semiconductor gas sensors are widely used in gas- analyzing applications for various gas species determination due to their low cost and possibility to detect number of different gases. However, one of the main problems with such sensors is their lack of selectivity. To overcome this issue different ap- proaches can be used. One of them is the operation with sensor temperature modulation combined with dedicated data process- ing...

  • Femtosecond Er-doped fiber laser source tunable from 872 to 1075 nm for two-photon vision studies in humans

    Publikacja
    • D. Stachowiak
    • M. J. Marzejon
    • J. Bogusławski
    • Z. Łaszczych
    • K. Komar
    • M. Wojtkowski
    • G. Soboń

    - Biomedical Optics Express - Rok 2022

    We report the development of a widely-tunable femtosecond fiber laser system and its application for two-photon vision studies. The source is based on an Er-doped fiber laser with spectral shift up to 2150 nm, followed by a second harmonic generation module to generate a frequency-doubled beam tunable from 872 to 1075 nm. The source delivers sub-230 fs pulses with nearly-constant duration over the entire tuning range, with output...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems

    Publikacja

    - SENSORS - Rok 2017

    Weigh-in-Motion systems are tools to prevent road pavements from the adverse phenomena of vehicle overloading. However, the effectiveness of these systems can be significantly increased by improving weighing accuracy, which is now insufficient for direct enforcement of overloaded vehicles. Field tests show that the accuracy of Weigh-in-Motion axle load sensors installed in the flexible (asphalt) pavements depends on pavement temperature...

    Pełny tekst do pobrania w portalu

  • Application of Ionic Liquids in Amperometric Gas Sensors

    This article presents an analysis of available literature data on metrological parameters of the amperometric gas sensors containing ionic liquids as an electrolyte. Four mechanism types of signal generation in amperometric sensors with ionic liquid are described. Moreover, this article describes the influence of selected physico-chemical properties of the ionic liquids on the metrological parameters of these sensors. Some metrological...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Analytical fluctuation enhanced sensing by resistive gas sensors

    Publikacja
    • R. Macku
    • J. Smulko
    • P. Koktavy
    • M. Trawka
    • P. Sedlak

    - SENSORS AND ACTUATORS B-CHEMICAL - Rok 2015

    Resistance fluctuations across polarised resistive gas sensors were studied in detail to evaluate sensor working conditions for detecting methane and ammonia at various concentrations. The 1/f noise component typically dominates other noise sources up to a few kHz and can be utilised to improve gas selectivity when compared with measurements of the sensor DC resistance. The Arrhenius plot was created and the activation energy for...

    Pełny tekst do pobrania w serwisie zewnętrznym

  • Portable Electronic Nose Based on Electrochemical Sensors for Food Quality Assessment

    The steady increase in global consumption puts a strain on agriculture and might lead to a decrease in food quality. Currently used techniques of food analysis are often labour-intensive and time-consuming and require extensive sample preparation. For that reason, there is a demand for novel methods that could be used for rapid food quality assessment. A technique based on the use of an array of chemical sensors for holistic analysis...

    Pełny tekst do pobrania w portalu

  • Characterization of Highly Filled Glass Fiber/Carbon Fiber Polyurethane Composites with the Addition of Bio-Polyol Obtained through Biomass Liquefaction

    This work aims to investigate the process of obtaining highly filled glass and carbon fiber composites. Composites were manufactured using previously obtained cellulose derived polyol, polymeric methylene diphenyl diisocyanate (pMDI). As a catalyst, dibutyltin dilaurate 95% and Dabco® 33-LV were used. It was found that the addition of carbon and glass fibers into the polymer matrix causes an increase in the mechanical properties...

    Pełny tekst do pobrania w portalu

  • Exhaled breath analysis by resistive gas sensors

    Breath analysis has attracted human beings for centuries. It was one of the simplest methods to detect various diseases by using human smell sense only. Advances in technology enable to use more reliable and standardized methods, based on different gas sensing systems. Breath analysis requires the detection of volatile organic compounds (VOCs) of the concentrations below individual ppm (parts per million). Therefore, advanced detection...

    Pełny tekst do pobrania w portalu

  • WOOD AND FIBER SCIENCE

    Czasopisma

    ISSN: 0735-6161

  • OPTICAL FIBER TECHNOLOGY

    Czasopisma

    ISSN: 1068-5200 , eISSN: 1095-9912

  • Advanced Fiber Materials

    Czasopisma

    ISSN: 2524-7921 , eISSN: 2524-793X

  • Simple Measurement Method for Resistive Sensors Based on ADCs of Microcontrollers

    Publikacja

    A new, complete measurement method for resistance measurement of resistive sensors for systems based on microcontrollers equipped with analog-to-digital converters (ADCs) is proposed. The interface circuit consists of only four resistors, including a resistive sensor and a reference resistor, connected directly to the microcontroller pins. It is activated only during measurements, which significantly reduces power consumption....

    Pełny tekst do pobrania w serwisie zewnętrznym