A5063814339- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Phase-change materials and chalcogenides
- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Nonlinear Optical Materials Studies
Beijing University of Technology
2020-2021
In this paper, a patch array antenna with wideband circular polarization and high gain is proposed by utilizing hybrid metasurface (MS). A corner-cut slotted was chosen as the source due to possible generation of CP mode. The MS (HMS), consisting receiver (RMS) arranged in 2 × squared patches linear-to-circular conversion (LCPC) surrounding it then utilized superstrate driven source. LCPC cell squared-corner-cut 45° oblique slot etched, which has capability for LCPC. unit possesses PC...
Traditional optical switches relying on the weak, volatile thermo-optic or electro-optic effects of Si SiN waveguides show a high consumption and large footprint. In this paper, we reported an electric-driven phase change switch consisting waveguide, Ge2Sb2Te5 (GST) thin film graphene heater suitable for large-scale integration high-speed switching. The reversible transition between amorphous crystalline states was achieved by applying two different voltage pulses 1.4 V (SET) 4 (RESET)....
On-chip photonics devices relying on the weak, volatile thermo-optic or electro-optic effects of silicon usually suffer from high insertion loss (IL) and a low refractive index coefficient. In this paper, we designed two novel 1 × 2 phase-change optical switches based signal-mode Si waveguide integrated with Ge2Sb2Te5 (GST) top clad layer, respectively. The three-state switch including amorphous GST (a-GST), face centered cubic crystalline phase (FCC-GST) hexagonal (HCP-GST) operated by...