A5045303660- Advanced Fiber Laser Technologies
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Advanced Fiber Optic Sensors
- Quantum Chromodynamics and Particle Interactions
- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Spectroscopy Techniques in Biomedical and Chemical Research
- Photonic Crystals and Applications
- Advanced Decision-Making Techniques
- 3D IC and TSV technologies
- Advanced Fluorescence Microscopy Techniques
- Engineering and Test Systems
- Solid State Laser Technologies
- Optical Coatings and Gratings
- Full-Duplex Wireless Communications
- Power Systems and Technologies
- Microwave Engineering and Waveguides
- Electromagnetic Compatibility and Measurements
- Superconducting Materials and Applications
- Optical Coherence Tomography Applications
- Software System Performance and Reliability
China Electronics Technology Group Corporation
2024
Shandong University of Technology
2022-2024
China Academy of Space Technology
2023
Zhejiang University
2023
Huawei Technologies (China)
2020
IMRA America (United States)
2008-2010
Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy
1996
A grating lobe-free silicon optical phased array with large field of view is demonstrated. Antennas periodically bending modulation are spaced at half wavelength or less. The experimental results show that the crosstalk between adjacent waveguides negligible 1550 nm wavelength. Additionally, to reduce reflection caused by sudden change refractive index output antenna array, tapered antennas added end face so more light will be coupled into free space. fabricated shows a 120° without any lobes.
This paper presents an E-band communication link using a 256-element phased-array. The design is based on 8-element sub-arrays, transmit/receive beamformer chips employing 6-bit phase shifter fabricated in SiGe BiCMOS process. Antennas were implemented 19-layer LTCC substrate. A 20 meter was realized 5G NR, 400 MHz bandwidth, OFDM with 120 kHz sub-carrier spacing.
Optical phased array (OPA) based on silicon photonics is considered as a promising candidate for realizing solid-state beam steering. However, the high refractive index contrast of waveguides leads to conventional OPA suffering from large random phase errors, which require complex post-processing such time-consuming calibration. We propose and demonstrate calibration-free with optimized optical width well compact 90° waveguide bends beyond single mode regime. By using grouped cascaded...
We have demonstrated ultra high NA fibers of core diameters down to 1.2μm, low confinement loss and very nonlinearity. Efficient supercontinuum generation is in a 2μm fiber. These can also be spliced conventional with loss.
Traditional CARS microscopy using picosecond (ps) lasers has been applied to a wide variety of applications; however, the required are expensive and require an environmentally stable lab. In our work, we demonstrate single femtosecond (fs) laser combined with photonic crystal fiber (PCF) optimal chirping achieve similar performance ps case important added advantages: fs-CARS utilizes versatile source that allows be other multiphoton techniques (e.g. SHG, TPF) for multimodal imaging without...
A recently proposed frequency hopping receiver based on the simultaneous photonics filtering and digitizing system can provide large receiving range as well high speed by rapidly tuning optical sampling pulses. With increase of speed, shape pulses is changed rapidly, performance, including off-band suppression bandwidth degraded. The performance degradation indicated in experiments, evaluated theoretically, analyzed numerical simulations. Simulations shortest time indicate that passbands are...
LEDs are now the most important lighting devices due to their excellent wall-plug efficiency (WPE). However, unique structure means that heat dissipation from chip can only be achieved by conduction. The insulating thermal conductivity layer becomes a bottleneck in transfer of chip, seriously affecting its lifetime and reliability. Cubic boron nitride (c-BN) has good stability, electrical insulation high conductivity, making it potential dissipating material. In this study, we investigate...
Abstract The authors have requested that this preprint be removed from Research Square.
High-impedance earth faults in medium voltage distribution networks are very difficult to detect and isolate because of the negligible fault current. The reliability high-impedance detection depends on measuring accuracy zero-sequence current transformers. There many published studies field networks, which lacks research engineering problems such as influence transformer its selection. This paper firstly analyzes detection. then presents measurement error test results common types...
For E-band wireless communications, a high gain steerable antenna with sub-arrays is desired to reduce the implementation complexity. This paper presents an communication link 256-elements antennas based on 8-elements and four beam-forming chips in silicon germanium (SiGe) bipolar complementary metal-oxide-semiconductor (BiCMOS), which packaged 19-layer low temperature co-fired ceramic (LTCC) substrate. After design manufacture of antenna, fast near-field calibration method proposed for...