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Waveguides

open access: yesOyo Buturi, 1993
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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, H C, Song
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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
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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
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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, Cheng Yin, Zhuangqi Cao
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Grating assisted waveguide-to-waveguide couplers

IEEE 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.
null Tao Liang, R.W. Ziolkowski
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Optical Waveguide Refractometers

2005
In this chapter we have illustrated a new method for the determination of the refractive index of liquid samples, based on Cerenkov second harmonic generation from suitable planar waveguides. The method allows the determination of the refractive index in the near infrared by detection in the visible.
MARANGONI, MARCO ANDREA   +2 more
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Ion implanted waveguides and waveguide lasers

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
Abstract Ion implantation is an accurate method for modifying the refractive index of surfaces of insulators to form optical waveguides and waveguide lasers. Alternative approaches are to directly define the waveguide region by implanting chemical dopants to control the refractive index and the lasing transitions or to use ion beam induced damage ...
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