A5108144508- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Advanced Photonic Communication Systems
- Advanced Algorithms and Applications
- Heavy Metals in Plants
- Effects and risks of endocrine disrupting chemicals
- Advanced Sensor and Control Systems
- Toxic Organic Pollutants Impact
- Quantum optics and atomic interactions
- Microbial bioremediation and biosurfactants
- Heavy Metal Exposure and Toxicity
- Heavy metals in environment
Institute of Semiconductors
2022-2025
Chinese Academy of Sciences
2009-2025
University of Chinese Academy of Sciences
2022-2025
Institute of Soil Science
2009-2021
University of Bremen
2009
Samsung (South Korea)
2009
Cadmium (Cd), chromium (Cr), lead (Pb), mercury (Hg) and arsenic (As) are potent toxicants to human health via dietary intake. It is imperative establish accurate soil thresholds based on soil-plant transfer models food safety standards for safe agricultural production. This study takes rice genotypes properties into account derive five heavy metal(loid)s using the bioconcentration factors (BCF) species sensitivity distribution (SSD) standard. The BCF generated from two paddy soils was...
Difficulty in etching lithium niobate (LN) results a relatively high propagation loss, which necessitates sophisticated processes to fabricate high-quality factor (Q) microresonators. Here, we multimode microring resonator with an intrinsic Q of 6 × 106, exhibits loss 50 times lower than that single-mode LN fabricated under the same process. Notably, excitation higher-order modes is effectively suppressed by utilizing Euler bend. The highly regular transmission spectrum demonstrates free...
We propose and demonstrate a high-performance asymmetrical multimode interference splitter on X-cut lithium niobate insulator (LNOI) with an ultra-compact size of 5.8 μm × (26.4–35.6) μm. A rectangle small region is removed from the upper left corner (MMI) coupler to achieve variable splitting ratio. Here, we design characterize MMIs in six different distribution ratios ranging 50:50 95:5 600 nm thick LNOI. Based cascade structure, linear fitting method accurately shows device loss (~0.1–0.9...
Narrow linewidth lasers have a wide range of applications in the fields coherent optical communications, atomic clocks, and measurement. Lithium niobate material possesses excellent electro-optic thermo-optic properties, making it an ideal photonic integration platform for new generation. The light source is crucial element large-scale integration. Therefore, essential to develop integrated narrow based on low-loss LNOI. This study multimode race-track type add-drop microring resonator with...
The linearity of modulators fundamentally determines the critical performance microwave-to-optical signal conversion in photonic systems. This work presents a compact dual-stage cascaded intensity modulator based on thin-film lithium niobate (TFLN), which overcomes constraints conventional Mach–Zehnder (MZMs) through an innovative two-stage architecture. proposed device integrates dual-MZM configuration with nonlinear component cancellation strategy, achieving concurrent suppression both...
With the rapid development of information technology, global data volume has been continuously expanding, placing unprecedented demands on communication networks to accommodate precipitously increasing throughput. Thin-film lithium niobate (TFLN) modulators, characterized by their large theoretical bandwidth, low half-wave voltage, and suitability for high-density integration, show great application potential in high-speed optical modules interconnection networks. However, persistent issue...
This article put forwards a simple microwave photonics measurement method for doppler frequency shift (DFS) and angle of arrival (AOA), which obtains the information conveniently precisely by comparing phase between two channels signals. The DFS direction can be judged more intuitively thanks to introduction reference signal. system uses parallel dual Mach-Zehnder modulators (DPMZMs) carrier suppression single-sideband (CS-SSB) modulation. A proof-of-concept experiment was taken, showing...
According to the active power balance principle, paper analyzed approximate mathematical model of APF. In order optimize control effect DC bus voltage in APF, PID method based on improved BP neural network is adopted do closed-loop system. The two strategies, adding momentum and adaptive learning rate adjustment, are combined improve network, which can not only effectively suppress appearing local minimum but also good shorten time stability furthermore. adjusted parameters such as KP KI...
A simple microwave photonic, reconfigurable, instantaneous frequency measurement system based on low-voltage thin-film lithium niobate an insulator phase modulator is put forward and experimentally demonstrated. Changing the wavelength of optical carrier can realize flexibility range accuracy, showing that during ranges 0–10 GHz, 3–15 12–18 average errors are 26.9 MHz, 44.57 13.6 respectively, thanks to stacked integrated learning models. Moreover, this still able respond signals as low −30...