Results 81 to 90 of about 5,261,506 (225)
Wavelength‐Multiplexed 2D Beam Steering via a Passive Diffractive Network
Advanced Optical Materials, EarlyView.Illustration of a wavelength‐multiplexed diffractive beam steering system, which is composed of K cascaded diffractive layers, each containing phase‐modulating elements that are jointly optimized using deep learning–based optimization. When illuminated with a set of wavelengths {λ1,λ2,…,λNw}$\{ {{{\lambda }_1},{{\lambda }_2},\ldots ,{{\lambda }_{{{N}_w}
Che‐Yung Shen +5 more
wiley +1 more source
3-Gbit/s Indoor Visible Light Communications Using Optical Diversity Schemes
IEEE Photonics Journal, 2015 A 3-Gb/s high-speed indoor visible light communication system using optical diversity schemes is presented. A double optical diversity (DOD) scheme in time and frequency is employed with selection combining (SC) on the basis of red, green, and blue (RGB)
Atul Sewaiwar +2 more
doaj +1 more source
IEEE Photonics Journal, 2020 We propose and experimentally demonstrate a color-shift-keying embedded direct-current-optical-orthogonal-frequency-division-multiplexing (CSK-DCO-OFDM) scheme for the VLC systems.
Wahyu Hendra Gunawan +3 more
doaj +1 more source
Advanced Optical Materials, EarlyView.Helicity‐dependent all‐optical magnetization switching was demonstrated for the Bi‐ and Ga‐substituted rare‐earth (R) iron garnet crystal thin films (Bi,Ga:RIG; R = Eu3+, Nd3+, and Y3+). The efficiency followed the order EIG > NIG > YIG. These results show the correlation between 4f orbital moment (4f〈L〉) of R3+ and helicity‐dependent optical ...
Ayumu Hata +7 more
wiley +1 more source
Visible-Light-Induced Photocatalyst-Free Radical Trifluoromethylation
, 2022 An attractive, versatile, and operationally simple, visible-light-induced, transition-metal-free, photocatalyst-free, and oxidant-free trifluoromethylation has been demonstrated.
Xin Liang (442470) +7 more
core +1 more source
Extrinsic Limitations of Stealthy Hyperuniform Devices
Advanced Optical Materials, EarlyView.Stealthy hyperuniform devices exhibit a scattering‐free angular region whose extent follows a simple quenching equation. Experimental measurements confirm this prediction but reveal quenching efficiencies far below theoretical expectations. Multiple scattering and finite‐size effects are quantified, establishing realistic performance limits for ...
Yuhao Xu +5 more
wiley +1 more source
Power distribution and Q-factor analysis of diffuse cellular indoor visible light communication systems [PDF]
, 2011 Comparing with the existing incandescent, light-emitting diodes (LEDs) offer higher power efficiency, higher brightness, longer lifetime, and have a fast dynamic response in the order of a few megahertz.
Ghassemlooy, Zabih +4 more
core
Visible-Light-Promoted Desulfurization to Synthesize Deoxyglycosides
, 2023 In this study, we have successfully applied a visible-light-promoted desulfurization method to the synthesis of deoxysugars, especially 1-deoxyglycose, 2,4-deoxyglycosides, and 2-deoxyglycosides with exclusive α-configuration.
Tao Luo +7 more
core +1 more source
Advanced Optical Materials, EarlyView.Understanding exciton fine structure is crucial for optoelectronic and quantum photonic applications of lead halide perovskites. It is demonstrated that polarization‐sensitive photon‐echo spectroscopy in a magnetic field resolves exciton fine‐structure splittings hidden by inhomogeneous broadening, enabling direct determination of the bright‐dark ...
M. Alex Hollberg +9 more
wiley +1 more source
High speed short range optical wireless ground-to-train communications [PDF]
, 2010 There is a huge demand for seamless high-speed communications in fast moving trains. People want broadband services while on board as in their home or in the workplace.
Ghassemlooy, Zabih +3 more
core