A5100412504- Photonic and Optical Devices
- Photonic Crystals and Applications
- Optical Coatings and Gratings
- Surface Roughness and Optical Measurements
- Phase-change materials and chalcogenides
- Laser Material Processing Techniques
- Plasmonic and Surface Plasmon Research
- Nanowire Synthesis and Applications
- Semiconductor Lasers and Optical Devices
- Advanced Surface Polishing Techniques
- Photorefractive and Nonlinear Optics
- Spectroscopy and Quantum Chemical Studies
Beijing University of Posts and Telecommunications
2023-2024
Yangzhou University
2022
Wuhan University
2013
National Synchrotron Radiation Laboratory
2013
University of Science and Technology of China
2006-2013
In this article, we design a low-loss, high-bandwidth Z-bend photonic silicon crystal waveguide bending in triangular lattice through topology optimization. Based on the topological optimization method, change relative position of air holes global scope to maximize transmittance and bandwidth waveguide. The simulation results indicate that transmission characteristics can be effectively improved with our method. After optimization, loss reduced −5 dB increase 160 nm. Our research has great...
Photonic crystal structures have excellent optical properties, so they are widely studied in conventional materials. Recent research shows that high-temperature superconducting periodic natural photonic features and favourable candidates for single-photon detection. Considering superconductors completely different properties from materials, we study the energy level diagram mid-infrared 3 μm–5 μm transmission spectrum of two-dimensional crystals both quenched states with finite element...
The design of photonic crystals using novel materials is great significance for the construction high-performance, next-generation crystal devices. We propose a universal Band structure-Transmission optimization-Band structure method based on moving asymptotic (MMA) method, which can be widely applied to structures. In this paper, we use optimize band high temperature superconducting crystal, and obtain wider bandgap better flatness in specific frequency band. This avoids disadvantages...
When irradiated by high-power lasers, fused silica optical component can be ablated, which seriously affects their laser-conducing capability and service life. Numerical simulations have been applied to investigate the ablation process, laser-induced damage threshold (LIDT), propagation loss of component. The depth crater increases linearly with duration irradiation, while rate development in width gradually decreases. LIDT front surface will significantly decrease, a considerable increase...
Three dimensions photonic crystals represent one of the most important building blocks towards achievement a full optics communication technology. Although several methods have been demonstrated to prepare 3D photon crystals, still challenge fabrication point view. It is highly desirable that these structures involves simple technologies. In this paper, novel method has developed fabricate structure. The process multi deep X-ray lithography is: Firstly, cube or cuboid resist sample shaped by...