Relevant bibliographies by topics / Dielectric waveguide

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Dielectric waveguide'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 May 2022

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Journal articles on the topic "Dielectric waveguide"

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Krutskikh, V. V., A. Yu Sizyakova, M. S. Minkara, A. R. Ibrahim, A. E. Mirzoyan, and A. N. Ushkov. "Broadband Metal-Dielectric Waveguide Path with Low Losses in the EHF Range." Rocket-space device engineering and information systems 8, no. 3 (2021): 89–98. http://dx.doi.org/10.30894/issn2409-0239.2021.8.3.89.98.

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. The present paper is devoted to the design of a new shielded metal-dielectric waveguide with low losses (less than 0.5 dB/m) and wide bandwidth for the 90–100 GHz frequency range. Various types of waveguide structures were analyzed, such as metal waveguides, oversized metal waveguides, dielectric waveguides, dielectric waveguides with a metal shield and various designs of the dielectric filling element. Estimates of loss per unit length in them are obtained. The design of a waveguide containing an oversized round metal screen and a dielectric element consisting of a plate and a rod, located in the center of symmetry of the device, is proposed. The task of creating a transition from the investigated waveguide to a standard rectangular metal waveguide is considered. It is a horn transition from a circular cross-section to a rectangular one with a length of more than 25 wavelengths with a dielectric structure continuing the dielectric element of the waveguide path. As a result of the work, the ratios of the dimensions of the structural elements of the waveguide path and the materials used were obtained that satisfy the required losses.
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Omar, M., R. Ramzan, and O. F. Saddiqui. "Energy Tunneling Behavior in Geometrically Separated Wave Guides." Advanced Electromagnetics 6, no. 3 (October 21, 2017): 84. http://dx.doi.org/10.7716/aem.v6i3.422.

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In this paper, characteristics of energy tunneling channel between the waveguides geometrically separated by a coaxial cable are studied. The novel aspect of design is use of coaxial channel to connect the waveguides while maintaining the energy tunneling phenomena. As anticipated the tunneling frequency depends upon the length of wire inside the waveguide and the length of the coaxial cable. The tunneling frequency also depends upon the dielectric constant of the material inside the waveguide and coaxial cable. At tunneling frequency the field strength (E and H) in the channel is extremely high, making the channel extremely sensitive to small change in permittivity of dielectric occupying the channel. The advantage of the proposed design is, its ability to tune to desired tunneling frequency just by changing the length of the coaxial cable without the need to redesign the waveguide height to accommodate the long tunneling wires. This structure can be used as dielectric sensor both for solid or liquid dielectrics just by placing the sample in coaxial cable cavity, contrary to previously report work where the sample has to be placed inside the waveguide.
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Huong, Nguyen Thanh, Nguyen Van Chinh, and Chu Manh Hoang. "Wedge Surface Plasmon Polariton Waveguides Based on Wet-Bulk Micromachining." Photonics 6, no. 1 (February 27, 2019): 21. http://dx.doi.org/10.3390/photonics6010021.

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In this paper, we propose and investigate the modal characteristics of wedge surface plasmon polariton (SPP) waveguides for guiding surface plasmon waves. The wedge SPP waveguides are composed of a silver layer deposited onto the surface of a wedge-shaped silicon dielectric waveguide. The wedge-shaped silicon dielectric waveguides are explored from the anisotropic wet etching property of single crystal silicon. The wedge SPP waveguides are embedded in a dielectric medium to form the metal–dielectric interface for guiding the surface plasmon waves. The propagation characteristics of the wedge SPP waveguides at the optical telecommunication wavelength of 1.55 μm are evaluated by a numerical simulation. The influence of the physical parameters such as the dimensions of the wedge SPP waveguide and the refractive index of the dielectric medium on the propagation of the surface plasmon wave is investigated. In addition, by comparing the propagation characteristics, we derive the wedge SPP waveguide with the optimal performance.
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Wahsheh, Rami A. "Theoretical Investigation of an Air-Slot Mode-Size Matcher between Dielectric and MDM Plasmonic Waveguides." International Journal of Optics 2021 (December 14, 2021): 1–8. http://dx.doi.org/10.1155/2021/1025374.

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Hybrid integration of dielectric and plasmonic waveguides is necessary to reduce the propagation losses due to the metallic interactions and support of nanofabrication of plasmonic devices that deal with large data transfer. In this paper, we propose a direct yet efficient, very short air-slot coupler (ASC) of a length of 36 nm to increase the coupling efficiency between a silicon waveguide and a silver-air-silver plasmonic waveguide. Our numerical simulation results show that having the ASC at the interface makes the fabrication process much easier and ensures that light couples from a dielectric waveguide into and out of a plasmonic waveguide. The proposed coupler works over a broad frequency range achieving a coupling efficiency of 86% from a dielectric waveguide into a metal-dielectric-metal (MDM) plasmonic waveguide and 68% from a dielectric waveguide to an MDM plasmonic waveguide and back into another dielectric waveguide. In addition, we show that even if there are no high-precision fabrication techniques, light couples from a conventional dielectric waveguide (CDW) into an MDM plasmonic waveguide as long as there is an overlap between the CDW and ASC, which reduces the fabrication process tremendously. Our proposed coupler has an impact on the miniaturization of ultracompact nanoplasmonic devices.
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Mortazy, Ebrahim, Alireza Hassani, Francois Legare, Ke Wu, and Mohamed Chaker. "Multilayer porous waveguide for microwave low-loss applications." International Journal of Microwave and Wireless Technologies 3, no. 4 (May 18, 2011): 459–63. http://dx.doi.org/10.1017/s1759078711000596.

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A novel waveguide called multilayer porous waveguide (MPW) is proposed as microwave low-loss transmission lines. MPW is a fully rectangular dielectric waveguide composed of several periodically rectangular air gaps in a bulk dielectric that can be easily formed by placing several dielectric substrates in interval with air gaps. The loss and propagating characteristics of both TE and TM modes in MPW are studied. The TE mode confined in the air gaps has a lower loss than the TM mode spread out in air gaps and dielectric; however, the loss of TM mode is still less than that of conventional microwave waveguides. Finally, MPW is an artificial material with desirable electrical permittivity and loss that can be used in structure of conventional waveguides.
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De Boeij, Wim P., Hans S. Kanger, Gerald W. Lucassen, Cees Otto, and Jan Greve. "Waveguide CARS Spectroscopy: A New Method for Background Suppression, Using Dielectric Layers as a Model." Applied Spectroscopy 47, no. 6 (June 1993): 723–30. http://dx.doi.org/10.1366/0003702934066938.

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Waveguide Coherent Anti-Stokes Raman Spectroscopy (CARS) can be used to measure Raman-active vibrations in thin-layer dielectric waveguides. In waveguide CARS experiments, background-free spectra can be obtained when asymmetric mode combinations are applied. The degree of suppression depends on the waveguide parameters and the wavelengths used. A new method using scanning pump and Stokes beams in waveguide CARS experiments is presented, which allows the possibility of maintaining full background suppression conditions over large spectral intervals. A small controlled change in the tuning conditions results in a heterodyning of the signal with a small amount of background, thereby enhancing the small resonant signals. Several simulations for dielectric waveguides are given.
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Pochernyaev, V. N., and N. M. Syvkova. "EXTERNAL PARAMETERS OF THE CONNECTION OF A RECTANGULAR WAVEGUIDE PARTIALLY FILLED OF LINEAR DIELECTRIC WITH A RECTANGULAR WAVEGUIDE PARTIALLY FILLED OF NONLINEAR DIELECTRIC." Visnyk Universytetu “Ukraina”, no. 1 (28) 2020 (2020): 100–105. http://dx.doi.org/10.36994/2707-4110-2020-1-28-09.

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. In the article, the external parameters of the connection of a rectangular waveguide partially filled of linear dielectric with a rectangular waveguide partially filled of a nonlinear dielectric are determined. Knowledge of the external parameters of such a connection ensures the design of devices with open nonlinear elements. Promising microwave paths of radio engineering systems based on rectangular waveguides partially filled of dielectric include a wide variety of active and passive microwave devices. The plane-transverse junction of these waveguides is considered for various geometric dimensions of dielectric plates and their relative permittivity. Such a junction is characterized by reactive conductivity, which is determined through the sum of the reactive conductivities of local fields. The transverse electric field at the junction is represented through the eigenvector function of the geometric surface, which coincides with the cross section of the waveguides. The scattering matrix of the plane-transverse junction is determined through the conductivity of the sections of the two waveguides and the conductivity of the plane-transverse junction. The dependences of the traveling wave coefficient and the modulus of the reflection coefficient on the geometric dimensions of the dielectric plate are plotted taking into account the local fields generated at the plane transverse junction. At the junction of two waveguides, not only changed the geometric dimensions of the dielectric plates along the wide and narrow walls of the waveguide, but also their relative permittivity. In one case, two higher types of waves were taken into account: quasi - H30 and quasi - H12, in the other case - four higher types of waves: quasi - H30, quasi - H12, quasi - E12, quasi - H50. Calculations show that an increase in the number of higher types of waves has practically no effect on the accuracy of calculations. The results obtained indicate the rapid internal convergence of the obtained solutions and the correct choice of the transverse electric eigenvector function of rectangular waveguides partially filled of dielectric as approximate the field on the junction of two waveguides.
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Jiang, Shimin, Weiwei Li, Zhigang He, and Qika Jia. "High-Gradient Cherenkov Radiation Based on a New Dielectric-Loaded Waveguide." Particles 1, no. 1 (November 25, 2018): 279–84. http://dx.doi.org/10.3390/particles1010022.

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A new type of dielectric-loaded waveguide, the high-gradient dielectric-loaded waveguide (HG-DLW), where the Cherenkov radiation with a high gradient can be excited by relativistic electron, is proposed in this paper. Based on the simulation results, the process of the high-gradient Cherenkov radiation excited in the proposed structure is studied in details, and the amplitude of wakefields excited in proposed structure can be enhanced by over six times compared with that from ordinary dielectric-loaded waveguides.
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Morozov, V. M., V. I. Magro, and E. Yu Trakhtman. "Infinite linear waveguide antenna array with metal-dielectric structures in the "floquet channel"." Journal of Physics and Electronics 28, no. 1 (September 10, 2020): 91–96. http://dx.doi.org/10.15421/332015.

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An electrodynamics calculation is performed for an infinite waveguide antenna array in the form of open ends of waveguides, in the near zone of which a metal-dielectric structure is located. This metal-dielectric structure is located in the "Floquet channels" and is a combination of a dielectric coating over the antenna array and horns. In this case, the horns are not a continuation of the waveguides, but are located at some distance from them. The space between the waveguides and the horns is filled with a dielectric. A system of equations that allows calculating the reflection coefficients of incident waves in waveguides is obtained.
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Mayboroda, D. V., and S. O. Pogarsky. "AN ANTENNA BASED ON A HYBRID METAL–DIELECTRIC STRUCTURE." Radio physics and radio astronomy 26, no. 3 (September 14, 2021): 270–77. http://dx.doi.org/10.15407/rpra26.03.270.

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Purpose: Nowadays, in the millimeter frequency range, the dielectric waveguides of various modifications have certain advantages over the standard metal waveguides, primarily due to the possibility of creating functional units based on them. This is due to the relative simplicity and low cost of manufacturing the dielectric waveguides and functional units using them, the high degree of their integration with active elements, the use in their manufacture of different dielectrics and polymers with a wide range of material constants and a variety of mechanical properties (in particular, some materials have a significant flexibility). After making a series of physical experiments we have found the possibility of implementing the frequency selection and radiation into free space of electromagnetic waves by a hybrid metal-dielectric structure. Design/methodology/approach: The studied electrodynamic structure belongs to the class of hybrid metal-dielectric structures. It includes a modified inverted dielectric waveguide with a periodic sequence on the dielectric plate of fifteen dielectric rods with metallized coating on one of the faces placed outwards. The structure efficiency was estimated by the voltage standing-wave ratio (VSWR) values and power attenuation in the duct. The measurements were made with the reflectometer method. To estimate the degree of electromagnetic field concentration near the rod inhomogeneities in the near zone, the mobile probe method was used. The field structures were visualized with the method of isolines. Findings: The results of a series of experimental investigations showed the possibility of matching the structure with the external waveguides in the frequency range of 26.5-32.5 GHz with the voltage standing-wave ratio (VSWR) less than 1.8. The frequency dependence of attenuation is oscillatory with clearly expressed frequency ranges with small and large attenuation values. Moreover, the dependence is almost periodic, which is typical of periodic structures. The frequency response slope in the transition zones can be quite high and reach values of 41.26 dB/GHz. The degree of concentration of the electric field near the waveguide dielectric rod and the degree of excitation of the dielectric inhomogeneities was found by directly measured electric field strength in the near zone. Measurements of energy characteristics made under the short-circuit conditions for the main guide and in the mode of matched load of the main guide showed both the ability to control the polarization characteristics and the ability to change the appearance of the pattern and its orientation in space. Conclusions: It has been experimentally proven that a hybrid metal-dielectric structure, being a modified inverted dielectric waveguide with a periodic sequence on the dielectric plate of fifteen dielectric rods with metalized coating on one of the faces placed outwards, can be effectively integrated into a standard transmission line. It is found that this structure can be matched with the external circuits in a fairly wide frequency range. It is also found that in different frequency ranges this hybrid metal-dielectric structure shows the possibility of both efficient frequency selection and radiation in free space. Antenna measurements have shown the beam pattern shape controllability. Key words: inverted dielectric waveguide, periodic sequence, voltage standing-wave ratio (VSWR), attenuation, reflectometer method, mobile probe method, directivity pattern
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Dissertations / Theses on the topic "Dielectric waveguide"

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Barkley, Edward R. (Edward Robert). "The integration of InP /InGaAsP ridge waveguide structures with dielectric waveguides on silicon." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38682.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2007.
Includes bibliographical references (p. 261-271).
Chip-to-chip optical interconnect technology, which is being explored as a potential replacement for copper chip-to-chip interconnects at data transmission rates exceeding 10 Gb/s, is one of several technologies that could be enabled by the monolithic integration of III-V optoelectronic devices on a silicon integrated circuit. Two significant capabilities required to achieve this monolithic integration were addressed: the assembly of III-V device structures on silicon and the fabrication of the waveguides that perform the intra-chip routing of the optical signal to and from these integrated device structures. These waveguides, consisting of a silicon oxynitride core (n = 1.6) and a silicon dioxide cladding (n = 1.45) were deposited via plasma-enhanced chemical vapor deposition (PECVD). The integrated InP/InGaAsP structures were fabricated using an existing novel technique for preparing very thin (on the order of 5 pm thick) substrate free rectangular structures (approximately 145 pm wide by 300 pm long) with cleaved facets. Using a pick-and-place method, the InP/InGaAsP structures were assembled in 6 pm deep rectangular wells formed by etching through the waveguide stack. The resulting configuration of the integrated devices in the wells facilitated end-fire coupling with the silicon oxynitride waveguides.
(cont.) Transmission spectrum measurements for this configuration verified the desired end-fire optical coupling through the integrated InP/InGaAsP device structures with a total coupling loss of 17.75 dB. This loss was shown through measurements and finite difference time domain (FDTD) simulations to be a function of integrated device misalignment, silicon oxynitride waveguide design, length of the gaps between the etched well edges and the device facets, and the well etch properties. Based on FDTD simulations and device misalignment statistics, it was shown that realistic, feasible improvements in the device alignment coupled with the use of higher index contrast waveguides could lower the coupling loss to 3.25 dB.
by Edward R. Barkley.
Ph.D.
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Kot, J. S. "Rectangular dielectric waveguide for millimetre wave components." Thesis, University of Bath, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374605.

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Clark, Jeffrey. "Double Negative Metamaterials in Dielectric Waveguide Configurations." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28708.

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With the recent resurgence of interest in double negative (DNG) materials and the reported construction of a metamaterial with DNG characteristics, applications of these materials become feasible and examination of the behavior of systems and devices a potentially fruitful topic. The most promising area of research, upon inquiry into past work related to DNG materials, proves to be dielectric waveguides. The present investigation, then, focuses on the inclusion of DNG materials in various planar dielectric waveguide configurations. These waveguides involve a core region surrounded by various numbers of symmetrically-placed cladding layers. The present investigation involves the review of the electromagnetic properties of DNG materials by a thorough analysis based on Maxwell's equations. The use of a negative index of refraction for these materials is justified. These results are then used to perform a frequency domain analysis of an N-layer formulation for dielectric waveguides which is general for any combination of DNG and double positive (DPS) materials. This N-layer formulation allows for the derivation of the characteristic equation, which relates the operating frequency and the propagation constant solutions, along with the cutoff conditions and field distributions. A causal material model which obeys the Kramers-Kronig relations and which is based on measurements of a realized metamaterial is studied and used in the investigation in order to produce realistic results. The N-layer formulation is then applied to the three-layer (slab) waveguide and known results are reviewed. A new interpretation of intramodal degeneracy is given, whereby degenerate modes are split into two separate modes, one with positive phase velocity and one with negative phase velocity but both with a causal positive group (energy) velocity. Next, the formulation is applied to the five-layer waveguide. New behaviors are observed in this case which are not seen for the three-layer waveguide, including the return of the fundamental mode in some cases, whereas it is never present for the three-layer guide, the absence of certain higher-order modes in some situations and the appearance of new modes. Additionally, for some configurations the order of the even and odd modes in the DNG frequency range is found to be reversed from that of conventional waveguides. The photonic crystal waveguide, which involves an infinite number of periodically placed cladding layers, is next studied using ray analysis, and a slight variation of the N-layer formulation is used to compare these results with those of the pseudo-photonic crystal waveguide. The pseudo-photonic crystal waveguide is identical to the photonic crystal waveguide with the exception that it has only large but finite number of layers. It is seen that the results of these two cases are similar for conventional modes, but the photonic crystal waveguide allows for new modes called photonic crystal modes which are inaccessible through conventional waveguides. Interesting phenomena such as mode crossings among the photonic crystal modes are observed and discussed. Using the results from the frequency domain analysis of the five-layer waveguide, a Fourier transform technique is used to study pulse propagation in a waveguide containing DNG materials. A Gaussian pulse is launched in the waveguide over the frequency range covering a portion of the positive- and negative-phase-velocity fundamental transverse electric (TE) modes. Splitting of the input pulse into two separate pulses is observed, where both of these new pulses have a causal, positive energy velocity. The interpretation of intramodal degeneracy given in previous discussions is buttressed with evidence from this portion of the investigation, thus completing the analysis and bringing the present study to its conclusion.
Ph. D.
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Aryal, Krishna Prasad. "Design and simulation of a hybrid dielectric waveguide." Thesis, University of Massachusetts Boston, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1599234.

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Waveguides, in general are used as a means to route photons. Traditional dielectric waveguides, composed of a high index core surrounded by a low index cladding, produce maximum field intensities far from dielectric interfaces. This thesis presents the design of a plasmonic enhanced waveguide, which relocates the maximum optical field intensity from the center of the waveguide to an interfacial region defined by a dielectric and a negative index material. This is accomplished through the use of a metal film, positioned on top of a traditional ridge waveguide in those places where one wishes to excite a plasmon mode as opposed to the more traditional dielectric mode. Plasmon modes have their highest field intensity at the interface located between the metal and the dielectric. In this thesis, the waveguide dimensions of a hybrid dielectric waveguide are determined with the intent of producing single mode operation for a ridge waveguide with and without metal on top. A commercial Eigen mode solver (MODE Lumerical) is used to obtain all field profiles, waveguide effective index and waveguide loss. Multiple simulations were used to design a waveguide, which supports a single plasmonic mode when the metal film is in place and a single dielectric mode when the metal film is absent. Such a waveguide is expected to find use in the field of integrated quantum optics where quantum dots, defined by near surface confining potentials, require high interfacial fields for maximum dot/field interactions. Further, based on the final waveguide design height of ( 5µm ) and width of ( 7.9µm ), an effective index of ( 3.687 ) results when operated in the plasmon mode and (3.619) when operated in dielectric mode. This change in refractive index suggests such hybrid dielectric/plasmon waveguides can be used for the design of Bragg reflectors leading to plasmonic cavities, which, when coupled to the proposed near surface located quantum dots, can be used for the production and detection of single photons, required by many diverse engineered quantum systems, such as quantum communication, quantum metrology and quantum computation.

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Abbas, Zulkifly. "Determination of the dielectric properties of materials at microwave frequencies using rectangular dielectric waveguide." Thesis, University of Leeds, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569541.

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Karadeniz, Erol. "Cylindrical high index contrast thin film dielectric optical waveguide." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2005. http://wwwlib.umi.com/cr/syr/main.

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Van, Gassen Kwinten. "Application of Twist Symmetry to a Cylindrical Dielectric Waveguide." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286829.

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The application of higher order symmetry to waveguide design is an active field and is showing evidence of improvement over traditional waveguide designs. There are two forms of higher symmetry: glide symmetry and twist symmetry. Glide and twist symmetry have previously been applied to bounded waveguide, and a recent work applied glide symmetry to the design of a dielectric slab waveguide. This work is the first application of twist symmetry to the design of a dielectric waveguide. In this work a twist symmetric dielectric rod waveguide was designed and simulated using the eigenmode, truncated structure and multimode method. The twist symmetric dielectric rod waveguide is demonstrated to have stopbands, analogous to those demonstrated in metal waveguides based on glide symmetry. In addition the waveguide also shows circular polarization based birefringence and circular polarization based stopbands. A novel unit cell was created which demonstrates the phenomenology of dielectric twist symmetry in the X-band. The dispersion diagram of this structure is calculated using the eigenmode and multimode method and the S-parameters of the novel waveguide were calculated using the truncated structure method. There is strong agreement in the propagation and attenuation characteristics from all three computational methods. The novel unit cell has potential applications as an inline polarization based filter for the fundamental HE11 mode of dielectric rod waveguides. With potential applications to communication and sensing systems.
Användandet av högre symmetrier I vågledardesigner är ett aktivt forskningsfält och fördelar över traditionell vågledardesign har påvisats. Det finns två typer av högre symmetri: glid- och vridsymmetri. Glid- och vridsymmetri har tidigare applicerats på stängda vågledare och glidsymmetri har nyligen applicerats på en dielektrisk vågledare. I detta arbete appliceras vridsymmetri i designen av en dielektrisk vågledare för första gången. I det här arbetet designas och simuleras en vridsymmetrisk dielektrisk med hjälp av egenmods, trunkerad-struktur- och mutimods-metoderna. Den vridsymmetriska dielektriska vågledaren påvisar stoppband, liknande de som tidigare visats i glidsymmetriska strukturer. Vidare visar strukturen cirkulärpolariserad dubbelbrytning och olika stoppband för de två cirkulära polarisationerna. En ny enhetscell togs fram vilken påvisade fenomenen kopplade till dielektrisk vridsymmetri för X-bands frekvenser. Dispersionsdiagrammet för strukturen beräknades med hjälp av egenmods- och multimodsmetoderna, och S-parametrarna för vågledaren beräknades med en trunkerad struktur. Resultaten från de olika metoderna stämmer väl överens gällande propagering och försvagning. Enhetscellen finner användning som polarisationsfilter för den fundamentale HE11-moden av dielektriska cirkulära vågledare och kan appliceras i kommunikations- och avkänningssystem.
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Wells, Colin G. "Analysis of shielded rectangular dielectric rod waveguide using mode matching." University of Southern Queensland, Faculty of Engineering and Surveying, 2005. http://eprints.usq.edu.au/archive/00001524/.

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The limit of current technology for mobile base station filters is the multimode filter, in which each cavity supports two (or possibly three) independent degenerate resonances. Shielded dielectric resonators with a rectangular cross-section are useful in this application. In the design of these filters, manufacturers are using software packages employing finite element or finite difference time domain techniques. However, for sufficient accuracy these procedures require large numbers of points or elements and can be very time consuming. Over the last decade research using the mode matching technique has been used to solve this kind of difficulty for various types of filter design and waveguide problems. In this thesis a mode matching method and computer program is developed to calculate the propagation coefficients and field patterns of the modes in a shielded rectangular dielectric rod waveguide. Propagating, complex, evanescent and backward wave modes are included and the work shows the presence of a dominant mode, and other fundamental modes, not previously identified. The effect of the shield proximity on the propagation characteristics and mode spectrum is investigated, together with the limitations on the accuracy of the mode matching method. In addition, the fields within the shielded rectangular dielectric rod waveguide, are used to calculate the attenuation coefficient of the dominant and fundamental modes. The influence on the attenuation coefficient of the proximity of the shield to the rod is also evaluated for these modes and limitations on accuracy are discussed. The calculated numerical results for the propagation and attenuation coefficient values are verified by measurement. The propagation coefficients results are typically within 2% of those measured. Verification of the attenuation coefficient results is achieved by comparing calculated and measured Q at the resonant frequencies of a number of shielded rectangular dielectric rod resonators. The difference between calculated and measured Q values is on average less than 4%. In the absence of a full solution of the shielded rectangular dielectric rod resonator, these results provide useful design information for this structure. In addition, the work reported in this thesis provides a basis for a full electromagnetic solution of this type of resonator. This would encompass the cubic dielectric resonator in a cubical cavity.
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Boese, Ingo. "Millimetre wave measurements and device characterisation at 140 GHz." Thesis, University of Kent, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242860.

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Ogunlade, Olumide. "Measurement of the microwave dielectric properties of liquids using waveguide structures." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556018.

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A variety of waveguide structures have been analysed for the measurement of the complex dielectric permittivity of liquids. Mode matching techniques are im- plemented to solve the forward problem of computing the scattering parameters for a sample of known permittivity filling a rectangular metal waveguide. Three different sample geometries are used. In the first, the liquid and the sample holder completely fill the waveguide cross section. As a result, only the dominant waveguide modes are matched across the discontinuity interface and an exact an- alytical relation between the S parameters and permittivity can be written. The second and third configurations are concentric cylinders and rectangles respec- tively, partially filling a metal waveguide, hence higher order modes are taken into account in the formulation. For the partially filled rectangular sample, a generalised scattering matrix method to obtain the overall scattering parameters due to the several discontinuity regions. Iterative methods are then introduced to solve the inverse problem of recover- ing the unknown permittivity from simulated or measured scattering parameters. For the partially filled waveguides, because an exact analytical relation does not exist, objective( error) functions are defined and minimized. The partially filled rectangular sample case is extended to obtain the resonant frequency and qual- ity factor of a dielectric loaded resonant cavity, and the results compared to the approximation normally used for the cavity perturbation technique. Finally, a rectangular dielectric waveguide method for liquid measurements was developed. This method has a treatment similar to the well known free space tech- niques. It has a distinct advantage of relaxing the strict requirements of sample dimension associated with metal waveguides, especially at higher frequencies.
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Books on the topic "Dielectric waveguide"

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Maragkou, Stauroula. A theoretical investigation of bends in nonradiative dielectric waveguide. Manchester: UMIST, 1998.

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Graglia, Roberto D., Giuseppe Pelosi, and Stefano Selleri, eds. International Workshop on Finite Elements for Microwave Engineering. Florence: Firenze University Press, 2016. http://dx.doi.org/10.36253/978-88-6655-968-9.

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When Courant prepared the text of his 1942 address to the American Mathematical Society for publication, he added a two-page Appendix to illustrate how the variational methods first described by Lord Rayleigh could be put to wider use in potential theory. Choosing piecewise-linear approximants on a set of triangles which he called elements, he dashed off a couple of two-dimensional examples and the finite element method was born. … Finite element activity in electrical engineering began in earnest about 1968-1969. A paper on waveguide analysis was published in Alta Frequenza in early 1969, giving the details of a finite element formulation of the classical hollow waveguide problem. It was followed by a rapid succession of papers on magnetic fields in saturable materials, dielectric loaded waveguides, and other well-known boundary value problems of electromagnetics. … In the decade of the eighties, finite element methods spread quickly. In several technical areas, they assumed a dominant role in field problems. P.P. Silvester, San Miniato (PI), Italy, 1992 Early in the nineties the International Workshop on Finite Elements for Microwave Engineering started. This volume contains the history of the Workshop and the Proceedings of the 13th edition, Florence (Italy), 2016 . The 14th Workshop will be in Cartagena (Colombia), 2018.
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1958-, Lu Yilong, ed. Microwave and optical waveguide analysis by the finite element method. Taunton, Somerset, England: Research Studies Press, 1996.

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American Telephone and Telegraph Company., ed. Theory of dielectric optical waveguides. 2nd ed. Boston: Academic Press, 1991.

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Yeh, C., and F. I. Shimabukuro. The Essence of Dielectric Waveguides. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-49799-0.

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Marcuse, Dietrich. Theory of dielectric optical waveguides. 2nd ed. London: Academic Press Inc, 1991.

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I, Shimabukuro F., and SpringerLink (Online service), eds. The Essence of Dielectric Waveguides. Boston, MA: Springer Science+Business Media, LLC, 2008.

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Dyott, R. B. Elliptical fiber waveguides. Boston: Artech House, 1995.

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A novel transition between rectangular waveguide and layered ridge dielectric waveguide. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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University of Illinois at Chicago. and United States. National Aeronautics and Space Administration., eds. Theory of circular dielectric waveguide with anisotropic sheet cover. Chicago, Ill: University of Illinois at Chicago, 1990.

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Book chapters on the topic "Dielectric waveguide"

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Weik, Martin H. "dielectric waveguide." In Computer Science and Communications Dictionary, 403. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4965.

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Weik, Martin H. "dielectric optical waveguide." In Computer Science and Communications Dictionary, 402. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4963.

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Weik, Martin H. "planar dielectric waveguide." In Computer Science and Communications Dictionary, 1283. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_14143.

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Weik, Martin H. "slab dielectric waveguide." In Computer Science and Communications Dictionary, 1603. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_17587.

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Yeh, C. "Dielectric Waveguide Theory." In Recent Advances in Electromagnetic Theory, 367–86. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3330-5_15.

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Osgood, Richard, and Xiang Meng. "Dielectric Slab Waveguide." In Graduate Texts in Physics, 31–55. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65193-0_3.

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Weik, Martin H. "slab dielectric optical waveguide." In Computer Science and Communications Dictionary, 1603. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_17586.

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Weik, Martin H. "doubly cladded slab dielectric waveguide." In Computer Science and Communications Dictionary, 459. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_5578.

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Banerjee, Amal. "Transparent Dielectric Optical Waveguide Fundamentals." In Optical Waveguides Analysis and Design, 7–69. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93631-0_2.

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Pollnau, Markus. "Waveguide fabrication methods in dielectric solids." In Advances in Spectroscopy for Lasers and Sensing, 335–50. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4789-4_18.

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Conference papers on the topic "Dielectric waveguide"

1

Nikolaenko, D. V. "Waveguide-beam transducers on multimode dielectric waveguides." In 2014 24th International Crimean Conference "Microwave & Telecommunication Technology" (CriMiCo). IEEE, 2014. http://dx.doi.org/10.1109/crmico.2014.6959554.

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Pollnau, Markus. "Dielectric waveguide lasers." In International Conference on Lasers, Applications, and Technologies '07, edited by Valentin A. Orlovich, Vladislav Panchenko, and Ivan A. Scherbakov. SPIE, 2007. http://dx.doi.org/10.1117/12.752833.

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Pollnau, Markus. "Efficient dielectric waveguide lasers." In 2016 18th International Conference on Transparent Optical Networks (ICTON). IEEE, 2016. http://dx.doi.org/10.1109/icton.2016.7550526.

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Itoh, Tatsuo. "Leakage from dielectric waveguide." In 2014 IEEE/MTT-S International Microwave Symposium - MTT 2014. IEEE, 2014. http://dx.doi.org/10.1109/mwsym.2014.6848262.

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Mizernik, V. N., and N. I. Pyatak. "Ferrite-dielectric waveguide-resonator systems." In 2003 13th International Crimean Conference 'Microwave and Telecommunication Technology' Conference Proceedings. IEEE, 2003. http://dx.doi.org/10.1109/crmico.2003.158904.

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Aydogan, Ahmet, Funda Akleman, and Serkan Yildiz. "Dielectric loaded waveguide filter design." In 2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE). IEEE, 2016. http://dx.doi.org/10.1109/isfee.2016.7803158.

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Poitras, Daniel, Penghui Ma, Pierre G. Verly, Zhenguo Lu, Jiaren Liu, Pedro Barrios, Juan Caballero, and Philip J. Poole. "Metal-Dielectric Waveguide Facet Coatings." In Optical Interference Coatings. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/oic.2016.tc.5.

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Shanjia, Xu. "Dielectric waveguide branching directional coupler." In 1987 Twelth International Conference on Infrared and Millimeter Waves. IEEE, 1987. http://dx.doi.org/10.1109/irmm.1987.9126969.

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Qudrat-E-Maula, Mohammad, Lotfollah Shafai, and Zahra A. Pour. "Dielectric loaded circular waveguide feeds." In 2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM). IEEE, 2014. http://dx.doi.org/10.1109/antem.2014.6887675.

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Callarotti, R. C., and E. Páez. "Microwave Dielectric Properties of Heavy Oil and Heating of Reservoirs." In SPE Energy Resources Conference. SPE, 2014. http://dx.doi.org/10.2118/spe-169937-ms.

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Abstract We have measured the electromagnetic high frequency (~5 GHz) response of heavy oil (API density ~10). The measurements were obtained for oil samples enclosed in high purity quartz vials located in an aluminum cylindrical resonator excited at the TE011 mode by means of microwaves. The oil relative real permittivity e' is found to be of the order of 2.3 with a loss tangent ranging from 0.0005 to 0.00006 depending on the frequency and the oil sample. We model the heating of reservoirs located at depths of the order of 1000 meters, excited through a cylindrical waveguide (a 6 inch diameter production pipe or a coiled tubing) excited in the TE01 mode. We discuss why this mode was selected and we analyze the attenuation due to various modes in cylindrical waveguides. The reservoirs considered have variable thicknesses (of the order of several meters). We present results for oil having the permeability of free space, and relative permittivities in the range from e = 2.3-j0.001, to e = 2.3-j0.01. The losses in the metallic circular waveguide walls reduce the surface applied power of 1 Kw to some 200 watts at the top of the reservoir and the mismatch between the empty and the filled waveguide further reduces the applied power due to the impedance mismatch. The power absorbed by the oil in the reservoir increases the temperature in the range of 8 to 20 C. This increase would certainly decrease the oil viscosity, favoring an easier production, but is far too small to cause any upgrading process. We include a discussion of the EROI factor (energy return on energy input) associated with electrical heating of oil reservoirs at low (60 Hz) frequencies and for the high frequency microwave heating process described.
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Reports on the topic "Dielectric waveguide"

1

Yeh, C., J. Chu, and F. I. Shimabukuro. Dielectric Ribbon Waveguide-An Optimum Configuration for Ultralow-Loss Millimeter/Submillimeter Dielectric Waveguide. Fort Belvoir, VA: Defense Technical Information Center, April 1991. http://dx.doi.org/10.21236/ada252393.

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Jain, Ravi K. Efficient Near and Mid-Infrared Dielectric Waveguide Lasers. Fort Belvoir, VA: Defense Technical Information Center, August 1997. http://dx.doi.org/10.21236/ada338743.

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Riggs, Lloyd S., and Charles A. Amazeen. Research with the Waveguide Beyond Cutoff or Separated Aperture Dielectric Anomaly Detection Scheme. Fort Belvoir, VA: Defense Technical Information Center, August 1990. http://dx.doi.org/10.21236/ada227008.

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Bigelow, W. S., and Everett G. Farr. Minimizing Dispersion in a Transverse Electromagnetic Waveguide Bend by a Layered Approximation of a Graded Dielectric Material. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada341706.

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Samaddar, S. N. Input Impedance of an Infinite Linear Scanned Array of Flat Rectangular Strips Inside a Dielectric Loaded Parallel Plate Waveguide. Fort Belvoir, VA: Defense Technical Information Center, July 1986. http://dx.doi.org/10.21236/ada171275.

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Yeh, Cavour. Dielectric Millimeter Waveguides. Volume 1. Fort Belvoir, VA: Defense Technical Information Center, March 1988. http://dx.doi.org/10.21236/ada196844.

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Lemery, Francois. Beam manipulation and acceleration with Dielectric-Lined Waveguides. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1221358.

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Butler, Jerome K. Millimeter-Wave Applications of Semiconductor Dielectric Waveguides with Plasma Layers (Surface or Buried) Generated from Semiconductor Lasers. Fort Belvoir, VA: Defense Technical Information Center, September 1992. http://dx.doi.org/10.21236/ada260484.

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Shimabukuko, F. I., and C. Yeh. Attenuation Measurement of Very Low-Loss Dielectric Waveguides by the Cavity Resonator Method in the Millimeter/Submillimeter Wavelength Range. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada206458.

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Gao, F. High-power radio frequency pulse generation and extration based on wakefield excited by an intense charged particle beam in dielectric-loaded waveguides. Office of Scientific and Technical Information (OSTI), July 2009. http://dx.doi.org/10.2172/961732.

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