A5100687433- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Electric Motor Design and Analysis
- Sensorless Control of Electric Motors
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Magnetic Bearings and Levitation Dynamics
- Photonic Crystals and Applications
- Numerical methods in engineering
- Electromagnetic Simulation and Numerical Methods
- Optical Coatings and Gratings
- Wind Turbine Control Systems
- Nanowire Synthesis and Applications
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- Cellular and Composite Structures
- Orbital Angular Momentum in Optics
- Geotechnical Engineering and Underground Structures
- Power Systems and Renewable Energy
- Advanced Battery Materials and Technologies
- Surface Modification and Superhydrophobicity
- Multilevel Inverters and Converters
- Microwave Engineering and Waveguides
Hefei University of Technology
2025
Chang'an University
2016-2024
Hebei University of Technology
2015-2024
Huazhong University of Science and Technology
2024
State Key Laboratory of Advanced Electromagnetic Engineering and Technology
2024
Anhui University of Technology
2024
Institute of Microelectronics
2024
South China Normal University
2024
Xingtai University
2022-2023
Xuchang University
2021
In the course of service, integral-forming aluminum foam sandwich (IFAFS) needed to bear three-point bending loads in different directions, however, its deformation mechanism and failure modes were still unclear. this work, performances IFAFS under flatwise edgewise conditions investigated by experiment, in-situ micro X-ray tomography digital volume correlation (DVC) calculation. The results showed that performance was more stable condition, with decrease span length presented three oblique...
Silicon photonic-based refractive index sensors are of great value in the detection gases, biological and chemical substances. Among them, microring resonators most promising due to their compact size narrow Lorentzian-shaped spectrum. The electric field a subwavelength grating waveguide (SWG) is essentially confined low-refractive dielectric, favoring enhanced analyte-photon interactions, which represents higher sensitivity. However, it very challenging further significantly improve...
Knowledge Graphs (KGs) often suffer from incompleteness and this issue motivates the task of Graph Completion (KGC). Traditional KGC models mainly concentrate on static KGs with a fixed set entities relations, or dynamic temporal characteristics, faltering in their generalization to constantly evolving possible irregular entity drift. Thus, paper, we propose novel link prediction model based embedding representation handle drift, termed as DCEL. Unlike traditional prediction, DCEL could...
Accurate information about the field current of wound-rotor synchronous starter generator (WRSSG) is prerequisite for optimal start control research WRSSG in starting mode. However, as winding rotating parts and there no slip ring brush mounted shaft, measurement not possible. A estimation method from brushless exciter side was proposed this paper. In method, rotor currents voltages asynchronous were first estimated then used to calculate through parametric average-value model rectifier....
This study proposes a novel mathematical model based on excitation system output equations (ESOEs) to evaluate the steady‐state performance of three‐phase brushless asynchronous (BAES) wound‐field synchronous aircraft starter–generator system. The could be used field current capabilities BAES and provide reference for control schema BAES. However, has unknown multivariable non‐linear characteristics, which give rise difficulty in modelling performance. Meanwhile, without closed‐loop main...
This study focuses on the identification of rotating diode failures an aircraft wound‐field synchronous starter–generator system. Owing to difference in topography between DC field excitation system and three‐phase brushless asynchronous (TBAES), diodes failure methods for cannot be implemented TBAES. To solve this problem, presents theoretical analysis effects TBAES rotor current. The shows that third fundamental components current could treated as features. When a operates open‐circuit...
In contrast to cumbersome benchtop spectrometers, integrated on-chip spectrometers are well-suited for portable applications in health monitoring and environmental sensing. this paper, we have developed an spectrometer with a programmable silicon photonic filter by simply using parallel cascaded micro-ring resonators (MRs). By altering the transmission spectrum of filter, multiple diverse sampling input is achieved. Then, combined artificial neural network (ANN) model, incident reconstructed...
Abstract Benefit from exceptional electrical transport properties, graphene receives worldwide attentions, especially in the domain of high frequency electronics. Due to absence effective bandgap causing off-state device, material is extraordinarily suitable for analog circuits rather than digital applications. With this unique ambipolar behavior, can be exploited and utilized achieve performance multipliers. Here, dual-gated field-effect transistors have been firstly used quadrupling. Two...
A four-port grating coupler with etched square holes is proposed and demonstrated for surface-normal polarization independent coupling. Benefiting from the perfectly vertical coupling 1 × 4 power splitting/combing scheme, efficient operation was achieved. The efficiency further improved by apodization. According to simulations, 2D apodized can achieve a (CE) of 64.5% (-1.9 dB), low upward back-reflection 8.5% (-11 polarization-dependent loss (PDL) lower than 0.04 dB across wavelength range...
In this work, a bidirectional grating coupler for perfectly vertical coupling is proposed. The efficiency enhanced using silicon nitride (Si3N4) layer above uniform grating. the presence of Si3N4 layer, back-reflected optical power into fiber diminished and waveguide increased. Genetic algorithm (GA) used to optimize simultaneously. optimal design obtained from GA shows that average in-plane about 57.5% (−2.5 dB) 68.5% (−1.65 dB), meanwhile back-reflection in C band reduced 17.6% (−7.5 7.4%...
A vertical grating coupler on silicon-on-insulator substrates has been designed and demonstrated. The light from a fiber can be coupled in split equally into two arms with the placed center. An optical combiner is used to collect transmission arms. measured peak coupling efficiency 37%. Our device also function like Mach-Zehnder interferometer. In an arm difference of 30 μm, normalized spectra 20-nm free spectral range more than 12-dB extinction ratio at 1567 nm are obtained.
Frequency conversion with nonlinear electronic components, a common approach for signal processing required in various communication applications, has found its operation bandwidth bottleneck due to the limited carrier mobility of traditional materials. Meanwhile, fiber-optics communications are playing significant role services their excellent transmission properties. However, transmitted optical signals had be converted electrical photodetectors before frequency was performed through...
While single wavelength all-optical information encoding through optically induced orientation of azobenzene dyes is being extensively pursued, we propose multi-wavelength optical data processing and recording based on disperse red 1 (DR1) 4-(4-hydroxybutyloxy) doped organic-inorganic hybrid films to increase the density data. By investigating change absorbance spectrum film under different irradiations, results indicate a laser pulses around 470 nm would be suitable as probe beam. In...