Results 41 to 50 of about 2,286,747 (296)
Optical characteristics of an oxyfluoride glass waveguide formed by a proton implantation
Results in Physics, 2018 An optical waveguide was fabricated by H+ ion implantation with an energy of 400 keV and a dose of 8 × 1016 ions/cm2 in the oxyfluoride glass for the first time to the best of our knowledge. The dark mode spectra of the waveguide were measured by a prism
Yue Wang +5 more
doaj +1 more source
Optical fibre taper-enabled waveguide photoactuators
Nature Communications, 2022 Despite promising devices, waveguide photoactuators actuating performances have been fundamentally restricted by the nature of standard optical fibres. To overcome these challenges, authors propose an optical fibre taper-enabled waveguide photoactuator ...
Jianliang Xiao +13 more
doaj +1 more source
Slot-Waveguide Based All-Optical RF Spectrum Analyzer
Photonics, 2023 All-optical radio-frequency spectrum analyzers (AORFSAs) with ultrabroad bandwidth break the electronic bottleneck and provide an efficient frequency analysis means for ultrafast optical signals in communications, signal generation and processing systems.
Yuhua Li +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou +19 more
wiley +1 more source
Numerical Analysis of Multilayer Optical Waveguide Modes based on Effective Refractive Index Method
Guangtongxin yanjiu, 2023 The effective and efficient refractive index of a multilayer optical waveguide is computed by taking into account the various order modes of the waveguide, such as the Quasi-Transverse Electric/Transverse Magnetic (Quasi-TE/TM) mode.
HE Wei +3 more
doaj
Optical Properties of Bowtie-Type Nanoantennas Integrated Onto a Silicon Waveguide Platform
IEEE Photonics Journal, 2019 In this paper, we provide a detailed three-dimensional numerical analysis of the optical properties of common and modified bowtie aperture antennas integrated onto a silicon waveguide platform, to discuss the influence of geometrical parameters on the ...
Ye-Fei Dong +4 more
doaj +1 more source
Nanophotonics, 2023 All-optical wavelength conversion based on four-wave mixing attracts intense interest in many areas, especially in optical fiber communications, due to the advantages of femtosecond response, modulation-format transparency, and high flexibility in ...
Zhao Ping +4 more
doaj +1 more source
Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride
Advanced Functional Materials, EarlyView.Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh +4 more
wiley +1 more source
IEEE Photonics Journal, 2019 Mode-selective absorption is realized by designing the ridge waveguide structure on silicon-on-insulator combined with two metal titanium (Ti) strips located on the two waveguide edges.
Yong Zhao +8 more
doaj +1 more source
Role of the Recombination Zone in Organic Light‐Emitting Devices
Advanced Materials, EarlyView.This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley +1 more source