Results 281 to 290 of about 2,829,520 (337)
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Vehicle Detection and Classification Using Distributed Fiber Optic Acoustic Sensing
IEEE Transactions on Vehicular Technology, 2020This paper presents a vehicle detection and classification system using distributed fiber-optic acoustic sensing (DAS) technology and describes a comprehensive classification method including signal processing and feature extraction.
Huiyong Liu +5 more
semanticscholar +1 more source
Optics News, 1987
Fiber-optic technology has its own distinct set of measurements, based largely on a mixture of optical and electronic techniques. This chapter covers the important optical aspects of fiber-optic measurements, assuming you know something about electronics.
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Fiber-optic technology has its own distinct set of measurements, based largely on a mixture of optical and electronic techniques. This chapter covers the important optical aspects of fiber-optic measurements, assuming you know something about electronics.
openaire +1 more source
A review of railway infrastructure monitoring using fiber optic sensors
, 2020In recent years, railway infrastructures and systems have played a significant role as a highly efficient transportation mode to meet the growing demand in transporting both cargo and passengers.
C. Du +4 more
semanticscholar +1 more source
Trends in Analytical Chemistry (TrAC), 2020
Fiber-optic evanescent wave (FOEW) sensors are promising in pollutant detection and evaluation of water quality because of their high resistance to corrosion, smart structure, anti-electromagnetic interference, and low cost.
L. Jiao +5 more
semanticscholar +1 more source
Fiber-optic evanescent wave (FOEW) sensors are promising in pollutant detection and evaluation of water quality because of their high resistance to corrosion, smart structure, anti-electromagnetic interference, and low cost.
L. Jiao +5 more
semanticscholar +1 more source
Applied Optics, 1968
A polychromator has been designed and built to obtain time dependent profiles of spectral lines produced in a pulsed plasma. Light intensity is measured simultaneously at ten wavelengths, spaced 1 A apart, by means of a specially constructed fiber optic device.
L S, Combes, C C, Gallagher
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A polychromator has been designed and built to obtain time dependent profiles of spectral lines produced in a pulsed plasma. Light intensity is measured simultaneously at ten wavelengths, spaced 1 A apart, by means of a specially constructed fiber optic device.
L S, Combes, C C, Gallagher
openaire +2 more sources
New England Journal of Medicine, 1965
Applications in the Medical Sciences Endoscopy With the appearance of flexible, image-carrying fiber bundles the medical profession realized that a great potential existed for their use in diagnost...
J A, Goldman, S, Bereskin, C, Shackney
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Applications in the Medical Sciences Endoscopy With the appearance of flexible, image-carrying fiber bundles the medical profession realized that a great potential existed for their use in diagnost...
J A, Goldman, S, Bereskin, C, Shackney
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Journal of Electronic Imaging, 1992
Several possibilities based on the principles of scattering and polarization of light in liquid crystals (LCs) and PLZT ceramics were studied for the replacement of mechanical shutters and attenuators in optical instruments. A scatter-mode LC was selected as the active material, and two modules were developed for fiber optic attenuatorapplications.
Karppinen, Arto +3 more
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Several possibilities based on the principles of scattering and polarization of light in liquid crystals (LCs) and PLZT ceramics were studied for the replacement of mechanical shutters and attenuators in optical instruments. A scatter-mode LC was selected as the active material, and two modules were developed for fiber optic attenuatorapplications.
Karppinen, Arto +3 more
openaire +4 more sources
Optics Letters, 2012
Methods of controllable, noncontact rotation of optically trapped microscopic objects have garnered significant attention for tomographic imaging and microfluidic actuation. Here, we report development of a fiber-optic spanner and demonstrate controlled rotation of smooth muscle cells. The rotation is realized by introducing a transverse offset between
Bryan J, Black, Samarendra K, Mohanty
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Methods of controllable, noncontact rotation of optically trapped microscopic objects have garnered significant attention for tomographic imaging and microfluidic actuation. Here, we report development of a fiber-optic spanner and demonstrate controlled rotation of smooth muscle cells. The rotation is realized by introducing a transverse offset between
Bryan J, Black, Samarendra K, Mohanty
openaire +2 more sources
Distributed Acoustic Sensing Turns Fiber‐Optic Cables into Sensitive Seismic Antennas
Seismological Research Letters, 2019Distributed acoustic sensing (DAS) is a new, relatively inexpensive technology that is rapidly demonstrating its promise for recording earthquake waves and other seismic signals in a wide range of research and public safety arenas.
Z. Zhan
semanticscholar +1 more source
Applied Optics, 1991
Analysis of the geometry of recursive tilings has led to the development of a new class of highly ordered optical composites that exhibit fractal surface character. These objects are, we believe, the first engineered fractal objects. The mathematics of tiling and examples of fractal fiber array devices are reviewed.
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Analysis of the geometry of recursive tilings has led to the development of a new class of highly ordered optical composites that exhibit fractal surface character. These objects are, we believe, the first engineered fractal objects. The mathematics of tiling and examples of fractal fiber array devices are reviewed.
openaire +2 more sources