Results 51 to 60 of about 66,598 (211)
Survey and visualization of land subsistence caused by groundwater depletion using Sentinel-1A IW TOPS Interferometry [PDF]
Environmental Resources Research, 2021 Land subsidence including downward subsidence with a horizontal displacement vector normally occurs in small amounts. In the present study, two pairs of Sentinel-1A descending and ascending images of 2014 and 2015 were used to survey the subsidence rate ...
R Dehghani Bidgoli +2 more
doaj +1 more source
Sensors, 2021 In our previous work, we have demonstrated that dielectric elastic grating can support Fabry–Perot modes and provide embedded optical interferometry to measure ultrasonic pressure.
Suejit Pechprasarn +2 more
doaj +1 more source
Non-destructive Fiber-optic Sensor System for the Measurement of Speed in Road Traffic
Advances in Electrical and Electronic Engineering, 2016 Fiber-optic sensors offer an attractive option to existing sensors for the measurement of the vehicle speed in road traffic. This article describes the measuring scheme of two interferometric sensor units including input-output components for the ...
Jan Nedoma +3 more
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Radial Polarization Interferometer
Frontiers in Optics 2010/Laser Science XXVI, 2009 We propose and demonstrate a new interferometric approach in which a uniform phase difference between the arms of the interferometer manifests itself as spatially varying intensity distribution. The approach is based on interfering two orthogonal spatially varying vector fields, the radially and azimuthally polarized beams, and measuring the projection
Gilad M, Lerman, Uriel, Levy
openaire +2 more sources
Sensors, 2022 The paper presents experimental data that show the possible application of a piezo actuator in the role of calibration standard that can serve as an alternative route to currently available methods like gauge blocks or flick standards.
Anna Trych-Wildner +2 more
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Feedback-assisted quantum nondemolition measurement in an atom-light-correlated interferometer
New Journal of PhysicsQuantum nondemolition (QND) measurement plays an essential role in quantum optics and quantum information. Here, a feedback-assisted atom-light-correlated interferometer (FALCI) is proposed and applied to the QND measurement of photon number, in which ...
Gao-Feng Jiao
doaj +1 more source
Tunable optical cavities for wavelength Indications in Gas Laser [PDF]
Kirkuk Journal of Science, 2016 Explain an all-optical tunable detention in gas laser based on wavelength conversion wavelength reconversion. The use of stable, calibrated optical reference cavities to equipping interferometer users with more exactly.
Suran D. Yaseen
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Vibration compensation of wavelength scanning interferometer for in-process surface inspection [PDF]
, 2010 A vibration stabilized Wavelength Scanning Interferometer (WSI) is developed for online or in-process measurement purposes. This paper describes the vibration compensation part of the WSI system.
Gao, F. +2 more
core
Reference-frame-independent model of a collective-excitation atom interferometer [PDF]
, 2023 We theoretically analyze the operating principles of a proposed matter-wave Sagnac interferometer utilizing Bose-Einstein-condensate (BEC) phonon modes as an interference medium.
Mommers, B. J., Bromley, M. W. J.
core +1 more source
Distributed acoustic sensing with Michelson interferometer demodulation
Photonic Sensors, 2016 The distributed acoustic sensing (DAS) has been extensively studied and widely used. A distributed acoustic sensing system based on the unbalanced Michelson interferometer with phase generated carrier (PGC) demodulation was designed and tested.
Xiaohui Liu +6 more
doaj +1 more source