Jasmin Smajić
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View article: Beam-based impedance measurement of HL-LHC low-impedance collimators
Beam-based impedance measurement of HL-LHC low-impedance collimators Open
The objective of the High Luminosity Large Hadron Collider (HL-LHC) upgrade is to attain an instantaneous luminosity that is 5 times greater than the design value of the LHC. This requires nearly 2 times higher beam intensity compared to t…
View article: Ring-assisted, racetrack, and Mach-Zehnder modulator: which one offers the lowest voltages and chirp-free operation?
Ring-assisted, racetrack, and Mach-Zehnder modulator: which one offers the lowest voltages and chirp-free operation? Open
This study presents a comparison between resonant and non-resonant electro-optical modulator configurations. The focus lies on finding the configuration with the highest modulation amplitude at the lowest drive voltage while achieving a la…
View article: Correction to “Anisotropic Superconducting Nb<sub>2</sub>CT<i><sub>x</sub></i> MXene Processed by Atomic Exchange at the Wafer Scale”
Correction to “Anisotropic Superconducting Nb<sub>2</sub>CT<i><sub>x</sub></i> MXene Processed by Atomic Exchange at the Wafer Scale” Open
Anisotropic Superconducting Nb
View article: Plasmonic Electro-Optic Modulators – A Review
Plasmonic Electro-Optic Modulators – A Review Open
Electro-optical modulators are key components in photonic communications, and they are decisively important for the quality and data transmission rates. They encode information by modulating the amplitude, phase, frequency or polarization …
View article: Plasmonics for Microwave Photonics
Plasmonics for Microwave Photonics Open
Plasmonics offers a path to map optical signals to the microwave and vice-versa. It offers seamless operation from the GHz up to THz. Essential components with bandwidths in excess of 500 GHz and their performance in some recent free-space…
View article: Plasmonic, photonic, or hybrid? Reviewing waveguide geometries for electro-optic modulators
Plasmonic, photonic, or hybrid? Reviewing waveguide geometries for electro-optic modulators Open
Electro-optic modulators are key elements in high-speed optical telecommunication links and preferably rely on materials with a linear electro-optic effect. Choosing adequate waveguide geometries is a key challenge in the design of electro…
View article: BASIC TECHNOLOGIES AND MODELS FOR IMPLEMENTATION OF INDUSTRY 4.0
BASIC TECHNOLOGIES AND MODELS FOR IMPLEMENTATION OF INDUSTRY 4.0 Open
The terms ''digital manufacturing '', ''Industry 4.0'', ''smart factory'', ''intelligent/smart manufacturing'', or ''factory of the future'' represent the same concept today.This means that individually automated machines and separate proc…
View article: 3D Scanning in Industry 4.0
3D Scanning in Industry 4.0 Open
: Modern technologies are essential parts of Industry 4.0. From automation, robotics, digitalization and additive manufacturing (3D printing) up to 3D scanning and reverse engineering. 3D scanning has a wide range of usage in today product…
View article: Modeling Plasmonic Antennas for the Millimeterwave & THz Range
Modeling Plasmonic Antennas for the Millimeterwave & THz Range Open
Plasmonic modulator antennas have been recently shown to be able to efficiently upmix millimeter and THz waves onto optical frequencies. In this article, we introduce a theory and equivalent circuit models for designing and optimizing plas…
View article: Mie Scattering for Photonic Devices
Mie Scattering for Photonic Devices Open
Mie scattering is increasingly exploited to manipulate electromagnetic fields to achieve strong resonant enhancement, to obtain perfect absorption of radiation, and to generate polarization or wavelength selectivity and/or sensitivity. In …
View article: Lightning impulse modeling and simulation of dry-type and oil-immersed power- and distribution transformers
Lightning impulse modeling and simulation of dry-type and oil-immersed power- and distribution transformers Open
This paper presents in detail numerical methods and techniques for lightning impulse (LI) modeling and simulation of power and distribution transformers. The modeling methods are based on equivalent circuits of transformer winding entities…
View article: Modeling Hydrodynamic Charge Transport in Graphene
Modeling Hydrodynamic Charge Transport in Graphene Open
Graphene has exceptional electronic properties, such as zero band gap, massless carriers, and high mobility. These exotic carrier properties enable the design and development of unique graphene devices. However, traditional semiconductor s…
View article: Coupled Electromagnetic and Hydrodynamic Semiconductor Modeling for Terahertz Generation
Coupled Electromagnetic and Hydrodynamic Semiconductor Modeling for Terahertz Generation Open
ISSN:0018-9464
View article: Magneto-Mechanical Optimization of Cross-Sections for $ \text{cos}(\theta)$Accelerator Magnets
Magneto-Mechanical Optimization of Cross-Sections for $ \text{cos}(\theta)$Accelerator Magnets Open
The cross-section design of cos(θ)superconducting magnets is historically developed in a two-step process: initially, the coil geometry is defined on the basis of magnetic optimizations; then, the structure is designed around the coil. The…
View article: Fast Solution of 3-D Eddy-Current Problems in Multiply Connected Domains by a, v-φ and t-φ Formulations With Multigrid-Based Algorithm for Cohomology Generation
Fast Solution of 3-D Eddy-Current Problems in Multiply Connected Domains by a, v-φ and t-φ Formulations With Multigrid-Based Algorithm for Cohomology Generation Open
The fast solution of three-dimensional eddy current problems is still an open problem, especially when real-size finite element models with millions of degrees of freedom are considered. In order to lower the number of degrees of freedom a…
View article: Broadband Metallic Fiber-to-Chip Couplers and a Low-Complexity Integrated Plasmonic Platform
Broadband Metallic Fiber-to-Chip Couplers and a Low-Complexity Integrated Plasmonic Platform Open
We present a plasmonic platform featuring efficient, broadband metallic fiber-to-chip couplers that directly interface plasmonic slot waveguides, such as compact and high-speed electro-optic modulators. The metallic gratings exhibit an exp…
View article: Highly Efficient Grating Coupler for Silicon Nitride Photonics with Large Fabrication Tolerance
Highly Efficient Grating Coupler for Silicon Nitride Photonics with Large Fabrication Tolerance Open
We demonstrate low-loss fiber-to-chip coupling via a-Si grating couplers on top of SiN waveguides for C-band TE light. The suggested simple scheme is fabrication tolerant and offers a path towards coupling efficiencies above -1 dB.
View article: Sensorless Coil Temperature Measurements using Neural Networks for Voltage Control
Sensorless Coil Temperature Measurements using Neural Networks for Voltage Control Open
Voltage and current measurement data based deep learning as a method to conduct sensorless coil temperature prediction of an embedded linear induction actuator is being proposed and validated in this work. Generated numerical data from Fin…
View article: Advanced Modelling Techniques for Resonator Based Dielectric and Semiconductor Materials Characterization
Advanced Modelling Techniques for Resonator Based Dielectric and Semiconductor Materials Characterization Open
This article reports recent developments in modelling based on Finite Difference Time Domain (FDTD) and Finite Element Method (FEM) for dielectric resonator material measurement setups. In contrast to the methods of the dielectric resonato…
View article: Frequency Limit of the Drift-Diffusion-Model for Semiconductor Simulations and its Transition to the Boltzmann Model
Frequency Limit of the Drift-Diffusion-Model for Semiconductor Simulations and its Transition to the Boltzmann Model Open
With ever increasing transfer speeds in electric communication systems, the operating frequencies of semiconductor devices reach the limit at which the underlying assumptions of the presently widely used Drift-Diffusion-Model (DDM) become …
View article: A Novel h–φ Approach for Solving Eddy–Current Problems in Multiply Connected Regions
A Novel h–φ Approach for Solving Eddy–Current Problems in Multiply Connected Regions Open
A novel h-φ approach for solving 3-D time-harmonic eddy current problems is presented. It makes it possible to limit the number of degrees of freedom required for the discretization such as the T-Ω method, while overcoming topological issu…
View article: Electromagnetic and Semiconductor Modeling of Scanning Microwave Microscopy Setups
Electromagnetic and Semiconductor Modeling of Scanning Microwave Microscopy Setups Open
This article presents finite difference time domain (FDTD) and finite element method (FEM) based electromagnetic modeling and simulation of an industrial scanning microwave microscopy (SMM) material measurement setup. These two methods hav…
View article: Time-domain Coupled Full Maxwell- and Drift-Diffusion-Solver for Simulating Scanning Microwave Microscopy of Semiconductors
Time-domain Coupled Full Maxwell- and Drift-Diffusion-Solver for Simulating Scanning Microwave Microscopy of Semiconductors Open
This paper presents a transient electromagnetic Maxwell solver (MS), a transient semiconductor Poisson-Drift-Dffusion (PDD) solver, and their numerical coupling. The proposed numerical solution schemes are based on Finite Element Method (F…
View article: Bicomponent melt-spinning of polymer optical fibers
Bicomponent melt-spinning of polymer optical fibers Open
A continuous and efficient production process of polymer optical fibers with varying core geometries is presented, along with mechanical and spectral characterization of prepared devices. Results are supported with finite element analysis.
View article: Modeling of Frequency Dependent Parameters in Time Domain High Frequency Transformer Simulations
Modeling of Frequency Dependent Parameters in Time Domain High Frequency Transformer Simulations Open
Modeling details of frequency dependent parameters and a method for taking those into account in time domain high frequency (HF) transformer simulations are presented. Frequency dependent turn resistance and core losses are considered. The…