A5016642439- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Orbital Angular Momentum in Optics
- Advanced Antenna and Metasurface Technologies
- Plasmonic and Surface Plasmon Research
- Wind Energy Research and Development
- Wind and Air Flow Studies
- Advanced Optical Sensing Technologies
- Aerodynamics and Fluid Dynamics Research
- Neural Networks and Reservoir Computing
- Optical Systems and Laser Technology
- Electromagnetic Scattering and Analysis
- Optical Coatings and Gratings
- Advanced Wireless Communication Technologies
- Optical Network Technologies
- Energy Load and Power Forecasting
Harbin Institute of Technology
2022-2023
Shantou University
2021-2022
Orbital angular momentum (OAM) of an optical vortex has attracted great interest from the scientific community due to its significant values in high-capacity communications such as mode or wavelength division multiplexer/demultiplexer. Although several configurations have been developed demultiplex vortex, multiwavelength high-order (HOOV) demultiplexer remains elusive lack effective control technologies. In this study, we present design, fabrication, and test metasurface elements for HOOV...
Recently, the diffractive deep neural network (D2NN) has demonstrated advantages to achieve large-scale computational tasks in terms of high speed, low power consumption, parallelism, and scalability. A typical D2NN with cascaded elements is designed for monochromatic illumination. Here, we propose a framework multi-wavelength (MW-D2NN) based on method weight coefficients. In training, each wavelength assigned specific weighting their output planes construct loss function. The trained...
Long-wave infrared imaging systems are widely used in the field of environmental monitoring and guidance. As core components, long-wave lenses suffer conditions less available materials, difficult processing, large volume mass. Metalens composed sub-wavelength structures is one most potential candidates to achieve a lightweight planar optical systems. Meanwhile, it essential obtain large-aperture with high power resolution. However, use finite-difference time-domain method simulate metalens...
Based on the classical spectral representation method of simulating turbulent wind speed fluctuation, a harmonic superposition algorithm was introduced in detail to calculate homogeneous turbulence field simulation space. From view validity numerical results MATLAB and efficiency, this paper discussed reason for bias existing between three types intensity involved whole process: simulated intensity, setting reference theoretical intensity. Therefore, novel correction standard deviation...
The diffractive deep neural network (D2NN) exhibits potential advantages to perform large-scale computational task in terms of high speed, low power consumption, parallelism and scalability. Currently, D2NN with cascaded surfaces is usually designed for single illumination. In this article, we propose a scheme multiple wavelengths based on the wavelength weighting coefficient. With loss function, multi-wavelength could be optically classify images handwritten digits by detecting intensity...
Traditional infrared lenses cannot meet the requirements of planarization and lightweight optical systems due to their large volume mass. An metasurface with almost zero thickness can control incident beam's amplitude, phase polarization arbitrarily, which make it possible circumvent these limitations. However, no has been designed realize sub-diffraction focusing in long-wave band. In this article, a longwave meta spiral zone plate (LWIR-MSZP) is designed, converts linearly polarized beam...
Fresnel zone plates (FZPs), which is lighter and smaller than the refractive lens, can achieve constructive interference at center of focal plane. To redistribute on-axis intensity, modified FZPs based on ring optimization combination have been achieved to extend depth focus (DOF) multiple spots. Furthermore, metasurface FZP utilizing meta-atom's anisotropic response proposed these functions. However, it unsolved realize mentioned functions optimized polarization distribution while incident...
尾流对串列式风力机性能影响的风洞试验研究