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Showing 1 to 18 of 18 for “"Dielectric Waveguide"”.
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Double Negative Metamaterials in Dielectric Waveguide Configurations
… 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 …
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Analysis of the Suspended H-Waveguide and Other Related Dielectric Waveguide Structures
… field and propagation characteristics of many dielectric waveguide structures that are of direct importance to the areas of millimeter-wave integrated circuits are studied. A rigorous method of analysis of the propagation constants and the field distributions of a newly developed suspended …
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Coaxial recess integration of InGaAs edge emitting laser diodes with waveguides on silicon substrates : a complete solution to laser integration on ICs
… emitting platelet laser diodes with SiON/SiO2 dielectric waveguides on a silicon substrate is presented. Small footprint laser platelets (300[mu]m long by 150[mu mwide and 6.3[mu]m high), are integrated and bonded in recesses etched in SiO2 deposited on a Si substrate, and are coaxially coupled …
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Theoretical and Experimental Study of Millimeter-Wave Integrated Circuits
… of a special class of integrated circuits called dielectric waveguide-based integrated circuits. The first phase deals with the theoretical analysis and characterization of dielectric waveguides suitable for circuit integration. The second part is an intensive investigation of dielectric-based …
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Efficient Solution of Large Sparse Eigenvalue Problems in Microelectronic Simulation
… devices, and the vector Helmholtz equation for a dielectric waveguide, addressing other important physical, numerical and computational issues as they arise. An asymptotic convergence estimate is derived which shows the Chebyshev-Arnoldi algorithm to be superior to Chebyshev-preconditioned …
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A study of periodic gratings in planar dielectric waveguides
Periodic gratings in waveguides act as frequency selective mirrors making them very useful as spectral filters for wavelength division multiplexing applications and as end mirrors for narrow linewidth lasers. A study of the spectral characteristics of both single and double gratings in planar …
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Manufacturability of gallium arsenide/aluminum gallium arsenide lasers grown by molecular beam epitaxy
… opto-electronic applications. A two-dimensional dielectric waveguide simulator has been used to analyze the optical properties of GRINSCH GaAs/AlGaAs lasers with asymmetrical cladding structures induced by noise in growth temperature measurement. Through this analysis, an optimal device structure …
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High-speed modulation of semiconductor lasers and properties of silver-coated quantum-dot lasers
… which the optical field is confined by a metal waveguide instead of the more traditional dielectric waveguide. These devices show great promise because of their strong optical confinement and scalability below the diffraction limit. Both of these attributes are critical to future optical …
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Controlling light on the nanoscale: ultrafast plasmonics and phase change functionality
… transmitted and modulated along a metal/dielectric waveguide is achieved. The ultrafast optical modulation of plasmons is accomplished by optical excitation of the aluminium plasmonic waveguide using 200 fs optical pulses at wavelengths near the aluminium’s interband absorption resonance …
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Compact laser-driven electron acceleration, bunch compression and coherent nonlinear Thomson scattering
… by coherent terahertz pulses in cylindrical waveguides, and the generation of coherent hard x-ray radiation by nonlinear Thomson scattering of compressed electron bunches. The Lawson-Woodward theorem describes conditions prohibiting net electron acceleration in laser-electron interactions. We …
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Coupled resonator based wireless power transfer for bioelectronics
… of treating segments of the human body as a dielectric waveguide resonator. This creates another form of a coupled resonator system. Preliminary experiments demonstrated optimized coupled resonator wireless energy transfer into human tissue. The WPT performance achieved to an ultra-miniature …
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Numerical Modelling of Plasmonic Waveguides
… for different channel plasmon polariton (CPP) waveguides; trenched-groove. V-groove and the suggested three trenched structure over a specific spectral range (200 - 550 THz). The selected frequency band is chosen to ensure the existence of the CPP fundamental mode. The reported design offers a …
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Novel rare-earth-doped planar waveguide lasers
… is compatible with a wide range of materials, waveguide architectures and fabrication techniques. This thesis reports a series of studies of rare-earth-doped planar waveguide lasers, exploiting and extending the diverse range of possibilities that can be applied to planar technology. The areas …
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Scanning near-field photon emission microscopy
… existing probes. Using this ranking the uncoated dielectric probes are chosen and applied for SNPEM detection from a variety of test structures. A detection efficiency level of 10 microA in terms of variation of the biasing current through the transistor is demonstrated. However, such detection …
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Design and investigation of a novel 𝝿-configuration spr sensor for multi-parameter biosensing applications.
… an analyte RI of 1.41. The integration of metal-dielectric (Ag-TiO2) in one sensing region induced a significant red shift of 294 nm, enabling wavelength-division multiplexing (WDM) for simultaneous dual-analyte detection. TiO2's high refractive index enhanced the local evanescent field, boosting …
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Semiconductor laser mode engineering via waveguide index structuring
… by the optical mode properties. In this work, dielectric waveguides and their guided modes have been simulated and analyzed as relevant to semiconductor diode lasers. The transverse refractive index structure of waveguides determines the modal field profiles and modal properties. By engineering …
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Dielektrická rezonátorová anténa integrovaná do substrátu
Bakalářská práce se zabývá návrhem dielektrické rezonátorové antény v mikrovlnném pásmu X, kde je rezonátor tvořen pomocí perforací mikrovlnného substrátu. Celá anténa je tvořena dvěma vrstvami. Anténa je napájená vlnovodem integrovaným do substrátu. Je popsán návrh rozměrů pro dosažení požadované …
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Dielectric Characterization: A 3D EM Simulation Approach
… the complex permittivity of homogeneous dielectric materials. By modeling the test fixture and obtaining a set of simulated S-parameters through an iterative solution process, the dielectric constant and loss tangent can be found. With further development, the 3D simulation results may be …