Results 331 to 340 of about 620,119 (380)

The waveguide invariant for a Pekeris waveguide

The Journal of the Acoustical Society of America, 2021
A closed-form waveguide invariant β for a Pekeris waveguide is derived. It is based on the modal Wentzel-Kramers-Brillouin (WKB) dispersion equation and implicit differentiation, in conjunction with the concept of the “effective boundary depth,” ΔH(θ), where θ is the propagation angle.
Gihoon Byun, Heechun Song
openaire   +3 more sources

Silicon Photonic Platform for Passive Waveguide Devices: Materials, Fabrication, and Applications

Advanced Materials & Technologies, 2020
Silicon photonics has attracted tremendous interest from academia and industry, as the fabrication of the silicon family of photonic devices is mostly compatible with the microelectronics process using complementary metal‐oxide semiconductors (CMOS ...
Yikai Su   +4 more
semanticscholar   +1 more source

Grating assisted waveguide-to-waveguide couplers [PDF]

open access: possibleIEEE Photonics Technology Letters, 1998
A new radiation-type waveguide-to-waveguide coupler is proposed. The coupling is realized through gratings embedded on the dielectric waveguides involved. Compared to the conventional hybrid-mode coupler, this type of coupler has advantages in that the two waveguides can be quite dissimilar as well as being separated by large distances.
Tao Liang, Richard W. Ziolkowski
openaire   +1 more source

Waveguide-coupled single collective excitation of atomic arrays

Nature, 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

A Waveguide to Unenclosed Coplanar Waveguide Transition

IEEE Transactions on Microwave Theory and Techniques, 2010
A transition from rectangular waveguide to unenclosed coplanar waveguide (CPW) is designed and tested at W -band. Full-wave finite-element analysis is applied to the design and optimization trends are shown for the critical parameters. A stepped-impedance filter suppresses a parasitic mode, which is generated as the circuit emerges from the waveguide ...
Theodore Reck   +2 more
openaire   +2 more sources

Dielectric Waveguides and Waveguide Devices for Microwave Applications

4th European Microwave Conference, 1974, 1974
A survey on the state of the art in Dielectric Waveguide (DW), stressing in particular the practical microwave applications, is given. The principles for designing DWs, fixing and joining devices, launchers, various multiport networks etc. are founded. A simple theory to calculate parameters of multiport networks with distributed coupling is developped.
V. F. Vzyatyshev   +3 more
openaire   +3 more sources

Periodic Waveguides and MQW Waveguide

2015
In research field of optics, diffraction gratings are widely investigated and applied; on the other hand, periodic metal waveguide is familiar to those worked with microwave waveguide. The early studies on periodic waveguide have a profound impact on the development of the waveguide optics.
Xianping Wang, Zhuangqi Cao, Cheng Yin
openaire   +2 more sources

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