Results 41 to 50 of about 425,893 (340)
PhotonicsIn this study, a traveling wave Mach-Zehnder intensity modulator (TW-MZM) was designed and optimized for six different electro-optical (EO) crystals: lithium niobate (LNB), potassium niobate (KNB), lithium titanate (LTO), beta barium borate (BBO ...
Abtin Ataei +2 more
doaj +1 more source
Sensors, 2023 Global and intercontinental networking relies on satellite communication. Its wireless communication system always has antennas and their feed assembly comprising waveguides. This makes the satellite payload heavy and costly.
Junghyun Cho +4 more
doaj +1 more source
Quantum Nonlinear Optics with a Germanium-Vacancy Color Center in a Nanoscale Diamond Waveguide. [PDF]
Physical Review Letters, 2016 We demonstrate a quantum nanophotonics platform based on germanium-vacancy (GeV) color centers in fiber-coupled diamond nanophotonic waveguides. We show that GeV optical transitions have a high quantum efficiency and are nearly lifetime broadened in such
M. Bhaskar +12 more
semanticscholar +1 more source
Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals
Advanced Engineering Materials, EarlyView.This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami +4 more
wiley +1 more source
Chiral nanophotonic waveguide interface based on spin-orbit interaction of light [PDF]
Science, 2014 Controlling the flow of light with nanoparticles Light propagating through optic fibers could provide the ultimate in information flow, but controlling the direction of flow is a key requirement. Petersen et al. show that the directional flow of light in
Jan Petersen, J. Volz, A. Rauschenbeutel
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner +14 more
wiley +1 more source
Comparison of Photonic to Plasmonic Mode Converters for Plasmonic Multiple-Input Devices
IEEE Photonics JournalImplementing a compact optical integrated circuit by utilizing subwavelength plasmonic devices requires the design of compact and efficient photonic to plasmonic mode converters.
Samantha Lubaba Noor +4 more
doaj +1 more source
A waveguide metasurface based quasi-far-field transverse-electric superlens
Opto-Electronic Advances, 2021 The imaging capability of conventional lenses is mainly limited by the diffraction of light, and the so-called superlens has been developed allowing the recovery of evanescent waves in the focal plane.
Yechuan Zhu +6 more
doaj +1 more source
Superradiance for Atoms Trapped along a Photonic Crystal Waveguide. [PDF]
Physical Review Letters, 2015 We report observations of superradiance for atoms trapped in the near field of a photonic crystal waveguide (PCW). By fabricating the PCW with a band edge near the D(1) transition of atomic cesium, strong interaction is achieved between trapped atoms and
A. Goban +6 more
semanticscholar +1 more source