Mode conversion and absorption in an optical waveguide under cascaded complex modulations
Sign Up to like & getrecommendations! Published in 2018 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-018-1617-7
Abstract: We investigate the mode conversion in a dielectric waveguide under spatially complex modulation, which refers to modulating both the real and imaginary parts of the dielectric permittivity. The complex modulations are applied separately in two… read more here.
Keywords: phase; complex modulations; conversion absorption; mode conversion ... See more keywords
Laser-induced surface acoustic waves for measurement of elastic constants based on mode conversion
Sign Up to like & getrecommendations! Published in 2020 at "Materials Chemistry and Physics"
DOI: 10.1016/j.matchemphys.2019.122523
Abstract: Abstract The measurement of elastic constants is very important to the study of materials. Laser ultrasonic technology has been widely concerned for its unique advantages and used to measure elastic constants, but the current measurement… read more here.
Keywords: elastic constants; mode conversion; surface; surface acoustic ... See more keywords
Nonlinear scattering and mode conversion of Lamb waves at breathing cracks: An efficient numerical approach.
Sign Up to like & getrecommendations! Published in 2019 at "Ultrasonics"
DOI: 10.1016/j.ultras.2018.09.011
Abstract: This article presents an efficient numerical approach to the investigation of nonlinear scattering and mode conversion phenomena of Lamb waves as they interact with breathing cracks. A Local Interaction Simulation Approach (LISA) is adopted, which… read more here.
Keywords: lamb waves; scattering mode; mode conversion; nonlinear scattering ... See more keywords
Shear to longitudinal mode conversion via second harmonic generation in a two-dimensional microscale granular crystal
Sign Up to like & getrecommendations! Published in 2017 at "Wave Motion"
DOI: 10.1016/j.wavemoti.2016.08.009
Abstract: Abstract Shear to longitudinal mode conversion via second harmonic generation is studied theoretically and computationally for plane waves in a two-dimensional, adhesive, hexagonally close-packed microscale granular medium. The model includes translational and rotational degrees of… read more here.
Keywords: shear longitudinal; mode; mode conversion; longitudinal mode ... See more keywords
Octave bandwidth in-line rectangular waveguide-to-coaxial transition using oversized mode conversion
Sign Up to like & getrecommendations! Published in 2017 at "Electronics Letters"
DOI: 10.1049/el.2017.2507
Abstract: A very low-loss in-line rectangular waveguide-to-coaxial transition covering an octave bandwidth is presented. In order to obtain such frequency coverage, the transition employs oversized mode conversion, i.e. the rectangular waveguide dimensions are internally enlarged to… read more here.
Keywords: transition; mode conversion; rectangular waveguide; line rectangular ... See more keywords
Mode Conversion and Scattering of Lamb Waves at Delaminations in Composite Laminates
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Aerospace Engineering"
DOI: 10.1061/(asce)as.1943-5525.0001060
Abstract: AbstractThis paper presents a study of Lamb wave scattering and mode conversion at a delamination in quasi-isotropic (QI) composite laminates. The study employs the fundamental antisymmetric mode (... read more here.
Keywords: lamb waves; composite laminates; mode conversion; scattering lamb ... See more keywords
IXPE detection of polarized X-rays from magnetars and photon mode conversion at QED vacuum resonance.
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2216534120
Abstract: The recent observations of the anomalous X-ray pulsars 4U 0142+61 and 1RXS J170849.0-400910 by the Imaging X-ray Polarimetry Explorer (IXPE) opened up a new avenue to study magnetars, neutron stars endowed with superstrong magnetic fields… read more here.
Keywords: vacuum; polarized rays; vacuum resonance; mode conversion ... See more keywords
Direct Mechanical Detection and Measurement of Wave-Matter Orbital Angular Momentum Transfer by Nondissipative Vortex Mode Conversion.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.244301
Abstract: We quantitatively report on the rotational mechanical effect of wave orbital angular momentum on matter by nondissipative vortex mode conversion. Our experiments consist of ultrasonic waves reflected off freely spinning helical acoustic mirrors that are… read more here.
Keywords: mode conversion; angular momentum; nondissipative vortex; vortex mode ... See more keywords
Towards MEMS-Tunable Phase Matching and Mode Conversion in Nanophotonic Waveguides
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Microelectromechanical Systems"
DOI: 10.1109/jmems.2020.3013602
Abstract: The advent of interconnected devices, sensors, and systems requires increasingly large data transmission rates. Optical communications has met these bandwidth needs due to the large information-carrying capacity of light, although new modulation and multiplexing approaches… read more here.
Keywords: conversion; mode conversion; phase matching; mems tunable ... See more keywords
Coordination Control Between Excitation and Hydraulic System During Mode Conversion of Variable Speed Pumped Storage Unit
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Power Electronics"
DOI: 10.1109/tpel.2021.3061268
Abstract: Variable speed pumped storage (VSPS) unit has various operation modes and it is often required by the dispatcher to convert rapidly and frequently between these modes. Unlike conventional units, however, VSPS is controlled by both… read more here.
Keywords: hydraulic system; conversion; excitation; mode conversion ... See more keywords
Mode conversion between fibers with different refraction index distribution based on adiabatically tapered structures.
Sign Up to like & getrecommendations! Published in 2023 at "Applied optics"
DOI: 10.1364/ao.478109
Abstract: Different fibers generally have different mode characteristics so their connections in many practical applications often require mode conversion. The feasibility of mode conversion between fibers with different refractive index distributions based on adiabatically tapered structures… read more here.
Keywords: core fiber; tapered structures; conversion; mode conversion ... See more keywords