Results 11 to 20 of about 425,893 (340)

A trifurcated waveguide problem [PDF]

open access: yes, 1994
We consider the diffraction of the dominant wave mode which propagates out of the mouth of a semi-infinite waveguide made of a soft and hard half plane.
Rawlins, A D
core   +6 more sources

A trifurcated waveguide problem II [PDF]

open access: yes, 1994
We consider the diffraction of the dominant plane wave mode which propagates out of the end of a semi-infinite waveguide. This waveguide is made up of a half plane with a Dirichlet boundary condition and a half plane with a Neumann boundary condition ...
Rawlins, A D
core   +6 more sources

Multi-mode coupling wave theory for helically corrugated waveguide [PDF]

open access: yes, 2012
Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse compressor.
Ronald K   +26 more
core   +4 more sources

In-Situ Study of Dynamics of Refractive Index Changes in Silicon Devices Induced by UV-light Irradiation

open access: yesIEEE Photonics Journal, 2022
Silicon photonics has been studied in various areas by providing small-footprint, high-performance, and mass-producible optoelectronic components integrated on a chip.
Jiaqi Wang   +8 more
doaj   +1 more source

Faster and More Accurate Time Domain Electromagnetic Simulation Using Space Transformation

open access: yesIEEE Photonics Journal, 2020
A novel finite difference time domain (FDTD) method based on space transformations is developed that overcomes the inherent obstacles of the conventional FDTD algorithm in a spatially complex domain.
Mohammadrahim Kazemzadeh   +2 more
doaj   +1 more source

Waveguide-coupled single collective excitation of atomic arrays [PDF]

open access: yesNature, 2019
Considerable efforts have been recently devoted to combining ultracold atoms and nanophotonic devices1–4 to obtain not only better scalability and figures of merit than in free-space implementations, but also new paradigms for atom–photon interactions5 ...
N. Corzo   +5 more
semanticscholar   +1 more source

Valley-locked waveguide transport in acoustic heterostructures

open access: yesNature Communications, 2020
Valley pseudospin, labeling the pair of energy extrema in momentum space, has been attracting attention because of its potential as a new degree of freedom in manipulating electrons or classical waves. Recently, topological valley edge transport of sound,
Mudi Wang   +5 more
semanticscholar   +1 more source

High-performance silicon−graphene hybrid plasmonic waveguide photodetectors beyond 1.55 μm [PDF]

open access: yesLight: Science & Applications, 2019
Graphene has attracted much attention for the realization of high-speed photodetection for silicon photonics over a wide wavelength range. However, the reported fast graphene photodetectors mainly operate in the 1.55 μm wavelength band.
Jingshu Guo   +13 more
semanticscholar   +1 more source

Analysis of a Waveguide-Fed Metasurface Antenna [PDF]

open access: yes, 2017
The metasurface concept has emerged as an advantageous reconfigurable antenna architecture for beam forming and wavefront shaping, with applications that include satellite and terrestrial communications, radar, imaging, and wireless power transfer.
David R. Smith   +4 more
semanticscholar   +1 more source

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

open access: yesOpto-Electronic Advances, 2020
Optical waveguides are far more than mere connecting elements in integrated optical systems and circuits. Benefiting from their high optical confinement and miniaturized footprints, waveguide structures established based on crystalline materials ...
Yuechen Jia, Shixiang Wang, Feng Chen
semanticscholar   +1 more source

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