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Journal articles on the topic 'Optical measurements'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Cennamo, Nunzio, and Pedro A. S. Jorge. "Optical Measurements." IEEE Instrumentation & Measurement Magazine 24, no. 5 (2021): 3–4. http://dx.doi.org/10.1109/mim.2021.9490999.

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2

Pawłowska, Sandra. "Computer Support of Analysis of Optical Spectra Measurements." Engineering Proceedings 6, no. 1 (2021): 51. http://dx.doi.org/10.3390/i3s2021dresden-10150.

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The verification of measurement errors has a big impact on the assessment of the accuracy of conducted measurements and obtained results. In many cases, computer simulation results are compared with measurement results in order to evaluate measurement errors. The purpose of our research was to check the accuracy of measurements made with a Fabry–Perot interferometer working in the transmission mode. In the measurement setup, a 1310 nm superluminescent diode light source, single-mode optical fibers and an optical spectrum analyzer were used. The influence of the length of the resonating cavity

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3

Adams, M. J., and P. J. R. Laybourn. "Optical fibre measurements." IEE Proceedings J Optoelectronics 135, no. 3 (1988): 189. http://dx.doi.org/10.1049/ip-j.1988.0036.

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4

Jennings, D. A., K. M. Evenson, and D. J. E. Knight. "Optical frequency measurements." Proceedings of the IEEE 74, no. 1 (1986): 168–79. http://dx.doi.org/10.1109/proc.1986.13430.

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5

Belich, T. James, Ryan P. Lahm, Richard W. Peterson, and Chad D. Whipple. "Optical Doppler measurements." American Journal of Physics 65, no. 3 (1997): 186–90. http://dx.doi.org/10.1119/1.18528.

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6

Kukołowicz, Paweł, Dariusz Szalkowski, Beata Jackowska-Zduniak, and Mikołaj Tarchalski. "Optical system for precise isocenter measurement." Polish Journal of Medical Physics and Engineering 29, no. 4 (2023): 178–84. http://dx.doi.org/10.2478/pjmpe-2023-0019.

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Abstract Introduction: The geometrical precision of the machines is essential for effective and safe radiotherapy. Methods currently used for the measurement of the mechanical isocenter have many limitations. In this work, the optical system NaviRation for very precise measurement of mechanical accelerator isocenter is described. The results of the measurement of the isocenter for linear accelerator are also presented. Materials and methods: An optical system for measuring the accelerator isocenter was designed and built. The optical system consists of two cameras recording the target position

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7

Bernstein, Johannes, and Albert Weckenmann. "Measurement uncertainty evaluation of optical multi-sensor-measurements." Measurement 45, no. 10 (2012): 2309–20. http://dx.doi.org/10.1016/j.measurement.2011.10.032.

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8

Matlis, Giselle C., Qihuang Zhang, Emilie J. Benson, et al. "Chassis-based fiber-coupled optical probe design for reproducible quantitative diffuse optical spectroscopy measurements." PLOS ONE 19, no. 7 (2024): e0305254. http://dx.doi.org/10.1371/journal.pone.0305254.

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Advanced optical neuromonitoring of cerebral hemodynamics with hybrid diffuse optical spectroscopy (DOS) and diffuse correlation spectroscopy (DCS) methods holds promise for non-invasive characterization of brain health in critically ill patients. However, the methods’ fiber-coupled patient interfaces (probes) are challenging to apply in emergent clinical scenarios that require rapid and reproducible attachment to the head. To address this challenge, we developed a novel chassis-based optical probe design for DOS/DCS measurements and validated its measurement accuracy and reproducibility again

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9

Pillarz, Marc, Axel von Freyberg, Dirk Stöbener, and Andreas Fischer. "Gear Shape Measurement Potential of Laser Triangulation and Confocal-Chromatic Distance Sensors." Sensors 21, no. 3 (2021): 937. http://dx.doi.org/10.3390/s21030937.

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The demand for extensive gear shape measurements with single-digit µm uncertainty is growing. Tactile standard gear tests are precise but limited in speed. Recently, faster optical gear shape measurement systems have been examined. Optical gear shape measurements are challenging due to potential deviation sources such as the tilt angles between the surface normal and the sensor axis, the varying surface curvature, and the surface properties. Currently, the full potential of optical gear shape measurement systems is not known. Therefore, laser triangulation and confocal-chromatic gear shape mea

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10

Trolinger, James D., Amit Lal, Joshua Jo, and Stephen Kupiec. "Programmable Holographic Optical Elements as Adaptive Optics in Optical Diagnostics Devices." Key Engineering Materials 437 (May 2010): 108–12. http://dx.doi.org/10.4028/www.scientific.net/kem.437.108.

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This paper reports a combined, Hartmann/Digital Holographic interferometry inspection system for inspecting optical components that do not easily lend themselves to conventional interferometric or Hartmann inspection. A programmable holographic optical element (HOE) preconditions wavefronts to extend the dynamic range of interferometry measurements and also transforms the same system into a scanning Hartmann operation, which has lower resolution but higher dynamic range. Inspecting aspherical surfaces with existing interferometers requires special, computer generated holographic optical elemen

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11

Roman, Muhammad, Damilola Balogun, Yiyang Zhuang, et al. "A Spatially Distributed Fiber-Optic Temperature Sensor for Applications in the Steel Industry." Sensors 20, no. 14 (2020): 3900. http://dx.doi.org/10.3390/s20143900.

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This paper presents a spatially distributed fiber-optic sensor system designed for demanding applications, like temperature measurements in the steel industry. The sensor system employed optical frequency domain reflectometry (OFDR) to interrogate Rayleigh backscattering signals in single-mode optical fibers. Temperature measurements employing the OFDR system were compared with conventional thermocouple measurements, accentuating the spatially distributed sensing capability of the fiber-optic system. Experiments were designed and conducted to test the spatial thermal mapping capability of the

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12

Rodríguez-García, M. A., and F. E. Becerra. "Adaptive Phase Estimation with Squeezed Vacuum Approaching the Quantum Limit." Quantum 8 (September 25, 2024): 1480. http://dx.doi.org/10.22331/q-2024-09-25-1480.

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Phase estimation plays a central role in communications, sensing, and information processing. Quantum correlated states, such as squeezed states, enable phase estimation beyond the shot-noise limit, and in principle approach the ultimate quantum limit in precision, when paired with optimal quantum measurements. However, physical realizations of optimal quantum measurements for optical phase estimation with quantum-correlated states are still unknown. Here we address this problem by introducing an adaptive Gaussian measurement strategy for optical phase estimation with squeezed vacuum states th

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13

Ivanov, A. V., S. N. Marchenko, A. V. Koldashov, and D. N. Zyablikov. "Measurement of optical density in a narrow wavelength band: a method for correcting the results of indirect measurements." Izmeritel`naya Tekhnika 73, no. 6 (2024): 28–33. http://dx.doi.org/10.32446/0368-1025it.2024-6-26-31.

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The issues of correspondence of the results of direct and indirect measurements of optical density in a narrow wavelength band are considered. The optical density in a narrow wavelength band was measured by filtering the luminous flux according to the international standard ISO 5-3:2009 “Photography and graphic technology – Density measurements. Part 3: Spectral conditions” (direct measurement) and spectral method (indirect measurement). In order to ensure the uniformity of optical density measurements in a narrow wavelength band and establish the traceability of measurement results to the Sta

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14

Tischler, Nora, Mario Krenn, Robert Fickler, Xavier Vidal, Anton Zeilinger, and Gabriel Molina-Terriza. "Quantum optical rotatory dispersion." Science Advances 2, no. 10 (2016): e1601306. http://dx.doi.org/10.1126/sciadv.1601306.

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The phenomenon of molecular optical activity manifests itself as the rotation of the plane of linear polarization when light passes through chiral media. Measurements of optical activity and its wavelength dependence, that is, optical rotatory dispersion, can reveal information about intricate properties of molecules, such as the three-dimensional arrangement of atoms comprising a molecule. Given a limited probe power, quantum metrology offers the possibility of outperforming classical measurements. This has particular appeal when samples may be damaged by high power, which is a potential conc

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15

A, Kobzev. "Optical Precipitation Gauge in the Rainfall Kinetic Energy Measurements." Journal of Energy and Environmental Science 1, no. 1 (2023): 1–8. http://dx.doi.org/10.23880/jeesc-16000101.

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A brief overview of the tasks that require information about the rainfall kinetic energy is presented. The possibilities of methods for obtaining such information using different techniques are shown. The influence of various microstructural parameters of raindrops on the kinetic energy is analyzed. This technique is illustrated by the data of measuring the characteristics of a heavy rain on July 22, 2023 in Tomsk. The measurements were carried out using the optical precipitation gauge OPTIOS. The OPTIOS measurement results are compared with the results of simplified estimates. It is concluded

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16

Nie, Jiucheng, Yukun Wang, Dacheng Wang, et al. "Method for Extracting Optical Element Information Using Optical Coherence Tomography." Sensors 24, no. 21 (2024): 6953. http://dx.doi.org/10.3390/s24216953.

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This study examines the measurement of film thickness, curvature, and defects on the surface or inside of an optical element using a highly accurate and efficient method. This is essential to ensure their quality and performance. Existing methods are unable to simultaneously extract the three types of information: thickness, curvature, and defects. Spectral-domain optical coherence tomography (SD-OCT), a non-invasive imaging technique with imaging depths down to the millimeter scale, provides the possibility of detecting the optical element components’ parameters. In this paper, we propose an

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17

Weisbrich, Martin, and Klaus Holschemacher. "Comparison between different fiber coatings and adhesives on steel surfaces for distributed optical strain measurements based on Rayleigh backscattering." Journal of Sensors and Sensor Systems 7, no. 2 (2018): 601–8. http://dx.doi.org/10.5194/jsss-7-601-2018.

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Abstract. Optical fiber measurement systems have recently gained popularity following a multitude of intensive investigations. A new technique has been developed for these measurement systems that uses Rayleigh backscatter to determine the distributed strain measurement over the total length of a fiber. These measurement systems have great potential in civil engineering and structural health monitoring. This paper addresses some preliminary comparisons between three different fiber coatings and six different adhesives on steel structures. The results are based on a bending test with specimens

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18

Ryabko, M., S. Koptyaev, A. Shcherbakov, and A. Lantsov. "Interferometer -based Technology for Optical Nanoscale Inspection." Measurement Science Review 14, no. 1 (2014): 25–28. http://dx.doi.org/10.2478/msr-2014-0004.

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Abstract We demonstrate the interferometer-based approach for nanoscale grating Critical Dimension (CD) measurements and prove the possibility to achieve no worse than 10 nm accuracy of measurements for 100 nm pitch gratings. The approach is based on phase shift measurement of light fields specularly reflected from periodical pattern and adjacent substrate with subsequent comparison between experimental and simulation results. RCWA algorithm is used to fit the measured results and extract the CD value. It is shown that accuracy of CD value measurement depends rather on the grating’s CD/pitch r

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19

Yusupbekov, N. R., and N. M. Zakhidov. "AUTOMATIC LASER BEAM DEFLECTION RECORDER WITH FIBER-OPTICAL CONVERTER." Journal of Science and Innovative Development 6, no. 5 (2023): 54–62. http://dx.doi.org/10.36522/2181-9637-2023-5-6.

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This article discusses the issue of improving geodetic instruments and methods for conducting alignment measurements using photoelectric and optoelectronic means of recording displacements relative to a given reference line with a laser radiation source. The relevance of the need to increase the efficiency and level of automation of cross-section measurements when performing field observations of deformations, displacements, and settlements of dams and hydraulic structures is substantiated. The table shows the main types of alignment measurements, which present the methods and means of each ty

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20

Käseberg, Tim, Jana Grundmann, Johannes Dickmann, Stefanie Kroker, and Bernd Bodermann. "Imaging Mueller matrix ellipsometry setup for optical nanoform metrology." EPJ Web of Conferences 238 (2020): 06006. http://dx.doi.org/10.1051/epjconf/202023806006.

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We designed, realized, and characterised an imaging Mueller matrix ellipsometry setup for the pixelwise measurement of the Mueller matrices in microscope images. Our setup is capable of performing measurements in reflection as well as in transmission in a broad range of angles of incidence for wavelengths between 400 nm and 700 nm. We compared measurements of specially designed nanostructured samples with AFM and SEM measurements as well as with numerical simulations using the finite element method.

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21

Otrusinová, Lenka, L. Čepová, and Lenka Petřkovská. "Measurement of Deviation of Roundnes." Technological Engineering 10, no. 1 (2013): 21–24. http://dx.doi.org/10.2478/teen-2013-0006.

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Abstract For the measurement of roundness deviations are used different measuring methods and measuring Instruments from universal to high-precision measuring Instruments. Recently, optical measurement Instruments have irreplaceable role and get to the forefront due simpler process of measurement, accelerate measuring and large possibility to storage obtained data. Nowadays more and more successful optical measurements above touch measurement, but touch measurement still has an important role in companies. Therefore, in the experiment were measured the deviations of the roundness on devices me

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22

Hoffmann, Lara, and Clemens Elster. "Deep neural networks for computational optical form measurements." Journal of Sensors and Sensor Systems 9, no. 2 (2020): 301–7. http://dx.doi.org/10.5194/jsss-9-301-2020.

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Abstract. Deep neural networks have been successfully applied in many different fields like computational imaging, healthcare, signal processing, or autonomous driving. In a proof-of-principle study, we demonstrate that computational optical form measurement can also benefit from deep learning. A data-driven machine-learning approach is explored to solve an inverse problem in the accurate measurement of optical surfaces. The approach is developed and tested using virtual measurements with a known ground truth.

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23

Álvarez-Botero, Germán, Fabián Barón, Camilo Cano, Oscar Sosa, and Margarita Varón. "Optical Sensing Using Fiber Bragg Gratings: Fundamentals and Applications." IEEE Instrumentation & Measurement Magazine 20, no. 2 (2017): 33–38. https://doi.org/10.1109/MIM.2017.7919131.

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In this article, Fiber Bragg Grating (FBG) technology used to implement fiber sensors is explained and some applications in temperature and strain measurements are presented. In the first section, the fundamentals and operation principles of FBGs are shown as well as optical fiber sensing interrogators. The second part of the article presents applications of temperature measurements in power transmission lines, shrinkage measurements in concrete structures, and spatiotemporal measurement variations in variations of temperature between groundwater and surface water (GW-SW).

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24

Harmatys, Wiktor, Piotr Gąska, Adam Gąska, et al. "Applicability Assessment of Different Materials for Standards Ensuring Comparability of Optical and Tactile Coordinate Measurements." Materials 15, no. 12 (2022): 4128. http://dx.doi.org/10.3390/ma15124128.

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Multisensor CMMs are systems with an established position on the market, but their popularity still grows, as they provide access to the advantages offered by tactile and contactless measurement methods. Yet there are still questions of the comparability of results obtained using the optical and tactile operation modes of multisensor system. This phenomenon can be assessed by measuring appropriate gauges, most often reference rings or spheres. Due to the completely different nature of probing processes for tactile and contactless measurements, the material from which reference object is made m

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25

Hug, W. "Virtual Enantiomers as the Solution of Optical Activity's Deterministic Offset Problem." Applied Spectroscopy 57, no. 1 (2003): 1–13. http://dx.doi.org/10.1366/000370203321165142.

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Deterministic offsets have remained one of optical activity's most intractable problems. To the extent that the mechanisms by which they are produced do not depend on the chiroptical properties of the sample, they can be eliminated by the subtraction of measurements done on both enantiomers. We show that it is possible to create, by purely optical means, by the sole use of half-wave retarders, the optical antipode of a chiral molecule, to measure the chiroptical properties of the molecule and of its optically generated antipode, and to recover, by subtracting the measurements, the offset-free

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26

Singh, Upendra N. "Laser Remote Sensors for NASA’s Future Earth and Space Science Missions." EPJ Web of Conferences 237 (2020): 01011. http://dx.doi.org/10.1051/epjconf/202023701011.

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Active optical (Laser/Lidar) measurement techniques are critical for the future National Aeronautics and Space Administration (NASA) Earth, Planetary Science, Exploration, and Aeronautics measurements. The latest science decadal surveys recommend a number of missions requiring active optical systems to meet the science measurement objectives and the aeronautics community continues to use Laser/Lidar technologies to meet the aeronautics measurement objectives. This presentation will provide an overview of NASA efforts in developing and maturing state-of-the-art advanced solid-state flight laser

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27

Thennadil, Suresh N., and Yi-chieh Chen. "Alternative Measurement Configurations for Extracting Bulk Optical Properties Using an Integrating Sphere Setup." Applied Spectroscopy 71, no. 2 (2016): 224–37. http://dx.doi.org/10.1177/0003702816665124.

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The usual approach for estimating bulk optical properties using an integrating sphere measurement setup is by acquiring spectra from three measurement modes namely collimated transmittance (Tc), total transmittance (Td), and total diffuse reflectance (Rd), followed by the inversion of these measurements using the adding–doubling method. At high scattering levels, accurate acquisition of Tc becomes problematic due to the presence of significant amounts of forward-scattered light in this measurement which is supposed to contain only unscattered light. In this paper, we propose and investigate th

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28

Pandey, Apoorva, Nishit J. Shetty, and Rajan K. Chakrabarty. "Aerosol light absorption from optical measurements of PTFE membrane filter samples: sensitivity analysis of optical depth measures." Atmospheric Measurement Techniques 12, no. 2 (2019): 1365–73. http://dx.doi.org/10.5194/amt-12-1365-2019.

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Abstract. Mass absorption cross section (MAC) measurements of atmospherically relevant aerosols are required to quantify their effect on Earth's radiative budget. Estimating aerosol light absorption from transmittance and/or reflectance measurements through filter deposits is an attractive option because of their ease of deployment in field settings, low cost, and the ability to revisit previously analyzed samples. These measurements suffer from artifacts that depend on a given filter measurement system and aerosol optics. Empirical correction algorithms are available for commercial instrument

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29

Dix, Stefan, Jonas Gutsche, Erik Waller, Georg von Freymann, and Artur Widera. "Fiber-tip endoscope for optical and microwave control." Review of Scientific Instruments 93, no. 9 (2022): 095104. http://dx.doi.org/10.1063/5.0100330.

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We present a robust, fiber-based endoscope with a silver direct-laser-written structure for radio frequency (RF) emission next to the optical fiber facet. Thereby, we are able to excite and probe a sample, such as nitrogen-vacancy (NV) centers in diamond, with RF and optical signals simultaneously and specifically measure the fluorescence of the sample fully through the fiber. At our targeted frequency range of around 2.9 GHz, the facet of the fiber core is in the near-field of the RF-guiding silver structure, which comes with the advantage of an optimal RF intensity decreasing rapidly with th

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30

Sriram, K. V., M. P. Kothiyal, and R. S. Sirohi. "Optical Measurements Using Talbot Interferometry." Journal of Optics 21, no. 4 (1992): 93–106. http://dx.doi.org/10.1007/bf03549241.

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31

HAMASHIMA, MUNEKI. "Linewidth measurements with optical methods." Journal of the Japan Society of Precision Engineering 51, no. 12 (1985): 2219–22. http://dx.doi.org/10.2493/jjspe1933.51.2219.

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32

Jamon, D., F. Royer, F. Parsy, E. Ghibaudo, and J. E. Broquin. "Birefringence Measurements in Optical Waveguides." Journal of Lightwave Technology 31, no. 19 (2013): 3151–57. http://dx.doi.org/10.1109/jlt.2013.2280034.

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33

Hollberg, L., C. W. Oates, E. A. Curtis, et al. "Optical frequency standards and measurements." IEEE Journal of Quantum Electronics 37, no. 12 (2001): 1502–13. http://dx.doi.org/10.1109/3.970895.

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34

Grangier, Philippe, Jean-Philippe Poizat, and Jean-François Roch. "Optical quantum non-demolition measurements." Physica Scripta T51 (January 1, 1994): 51–57. http://dx.doi.org/10.1088/0031-8949/1994/t51/007.

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35

Diels, J. C. "Fast electrical and optical measurements." IEEE Journal of Quantum Electronics 23, no. 7 (1987): 1234. http://dx.doi.org/10.1109/jqe.1987.1073470.

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36

Phillips, Lee S., Stephen M. Barnett, and David T. Pegg. "Optical measurements as projection synthesis." Physical Review A 58, no. 4 (1998): 3259–67. http://dx.doi.org/10.1103/physreva.58.3259.

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37

Franzen, Douglas L. "Precision measurements on optical fibers." Optics and Photonics News 2, no. 5 (1991): 30. http://dx.doi.org/10.1364/opn.2.5.000030.

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38

Andersson, P. O., and K. Akermark. "Accurate optical extinction ratio measurements." IEEE Photonics Technology Letters 6, no. 11 (1994): 1356–58. http://dx.doi.org/10.1109/68.334838.

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39

DeVoe, R. G., C. Fabre, K. Jungmann, J. Hoffnagle, and R. G. Brewer. "Precision optical-frequency-difference measurements." Physical Review A 37, no. 5 (1988): 1802–5. http://dx.doi.org/10.1103/physreva.37.1802.

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40

Swaminathan, P., B. G. Burke, A. E. Holness, et al. "Optical calibration for nanocalorimeter measurements." Thermochimica Acta 522, no. 1-2 (2011): 60–65. http://dx.doi.org/10.1016/j.tca.2011.03.006.

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41

Pegau, W. Scott, Clayton A. Paulson, and J. Ronald V. Zaneveld. "Optical measurements of frazil concentration." Cold Regions Science and Technology 24, no. 4 (1996): 341–53. http://dx.doi.org/10.1016/s0165-232x(96)00005-5.

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42

Marabelli, F., and P. Wachter. "Covalent insulatorCeO2: Optical reflectivity measurements." Physical Review B 36, no. 2 (1987): 1238–43. http://dx.doi.org/10.1103/physrevb.36.1238.

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43

Wagner, Stefan J., and W. Seifert. "Optical Polarization Measurements of Pulsars." International Astronomical Union Colloquium 177 (2000): 315–18. http://dx.doi.org/10.1017/s0252921100059868.

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AbstractWe investigate the polarization characteristics of optical emission from young pulsars. In a first attempt we search for polarization in images without time resolution in order to select suitable candidates for time-resolved studies. Polarization information constrains the nature of the faint optical emission of pulsars and will eventually allow to derive the topology of the field in those areas were optical radiation is emitted. We determine the polarization of the time-integrated optical emission of the SMC pulsar B0540-69 and the Vela pulsar B0833-45. We identify a new candidate opt

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44

Grangier, P. "Optical quantum nondemolition measurements: experiments." Physics Reports 219, no. 3-6 (1992): 121–29. http://dx.doi.org/10.1016/0370-1573(92)90130-r.

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New, G. H. C. "Fast Electrical and Optical Measurements." Journal of Modern Optics 34, no. 1 (1987): 1–2. http://dx.doi.org/10.1080/09500348714550021.

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46

Tiziani, H. J. "Optical methods for precision measurements." Optical and Quantum Electronics 21, no. 4 (1989): 253–82. http://dx.doi.org/10.1007/bf02027299.

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47

IWATA, Koichi. "Pattern Measurements in Optical Interferometry." Review of Laser Engineering 13, no. 11 (1985): 853–61. http://dx.doi.org/10.2184/lsj.13.853.

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48

Barton, J. S. "Making measurements with optical fibres." Physics Education 29, no. 3 (1994): 151–54. http://dx.doi.org/10.1088/0031-9120/29/3/007.

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49

Erm, A., H. Arst, M. Hussainov, T. Kutser, and A. Reinart. "OPTICAL MEASUREMENTS IN LAKE ÜLEMISTE." Proceedings of the Estonian Academy of Sciences. Biology. Ecology 48, no. 1 (1999): 63. http://dx.doi.org/10.3176/biol.ecol.1999.1.05.

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50

Rau, N., and G. Huebner. "Optical measurements of chatter marks." Wear 109, no. 1-4 (1986): 225–39. http://dx.doi.org/10.1016/0043-1648(86)90267-x.

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