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The waveguide invariant for a Pekeris waveguide
The Journal of the Acoustical Society of America, 2021A 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
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Grating assisted waveguide-to-waveguide couplers [PDF]
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.
Tao Liang, Richard W. Ziolkowski
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A Waveguide to Unenclosed Coplanar Waveguide Transition
IEEE Transactions on Microwave Theory and Techniques, 2010A 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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Dielectric Waveguides and Waveguide Devices for Microwave Applications
4th European Microwave Conference, 1974, 1974A 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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Periodic Waveguides and MQW Waveguide
2015In 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
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2004
Much of the discussion in the previous three chapters centered around lossless transmission lines. For these lines, the various relations were independent of conductivity of the materials involved. In fact, even for a distortionless transmission line, although an attenuation constant was present, all other basic properties of the line were independent ...
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Much of the discussion in the previous three chapters centered around lossless transmission lines. For these lines, the various relations were independent of conductivity of the materials involved. In fact, even for a distortionless transmission line, although an attenuation constant was present, all other basic properties of the line were independent ...
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2020
In integrated optics, optical waveguides are fundamental elements for the development of integrated devices, including light sources, modulators, detectors, optical pathways, receivers and switches. For the fabrication of optical integrated waveguide components, grating couplers or other complex integrated structures realized on planar optical ...
Thi Ngoc Lam Tran +3 more
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In integrated optics, optical waveguides are fundamental elements for the development of integrated devices, including light sources, modulators, detectors, optical pathways, receivers and switches. For the fabrication of optical integrated waveguide components, grating couplers or other complex integrated structures realized on planar optical ...
Thi Ngoc Lam Tran +3 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, 1992Abstract 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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Waveguide dispersion in anisotropic optical waveguides
Soviet Journal of Quantum Electronics, 1987The method of shift formulas is employed to obtain approximate analytic expressions which can be used to calculate?with sufficient accuracy for practical applications?the waveguide and polarization dispersion of the dominant orthogonally polarized modes in anisotropic optical fiber waveguides.
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