A5100401396- Advanced Fiber Laser Technologies
- Advanced Photonic Communication Systems
- Advanced Fiber Optic Sensors
- Optical Network Technologies
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Laser Design and Applications
- Biosensors and Analytical Detection
- Nanoparticle-Based Drug Delivery
- Receptor Mechanisms and Signaling
- Advanced Optical Network Technologies
- Nanoplatforms for cancer theranostics
- Advanced Proteomics Techniques and Applications
- Traffic Prediction and Management Techniques
- Optical Wireless Communication Technologies
- Advanced Chemical Sensor Technologies
- Smart Grid Energy Management
- Magnetic properties of thin films
- Electromagnetic Simulation and Numerical Methods
- Solid State Laser Technologies
- Radar Systems and Signal Processing
- Electromagnetic Scattering and Analysis
- Network Security and Intrusion Detection
- Radio Frequency Integrated Circuit Design
- Advanced SAR Imaging Techniques
BGI Research
2024
Botswana Geoscience Institute
2024
South China University of Technology
2024
China Academy of Space Technology
2020-2023
Tongji University
2023
Institute of Acoustics
2023
Jilin University
2014-2023
State Key Laboratory on Integrated Optoelectronics
2018-2023
Microsoft Research (United Kingdom)
2018
Shandong University
2017
We consider using a battery storage system simultaneously for peak shaving and frequency regulation through joint optimization framework which captures degradation, operational constraints uncertainties in customer load signals. Under this framework, real data we show the electricity bill of users can be reduced by up to 12%. Furthermore, demonstrate that saving from is often larger than sum optimal savings when used two individual applications. A simple threshold real-time algorithm...
We proposed a dual-chirp microwave photonic radar based on compressive sensing for distance and velocity measurement. This can generate different chirp linear frequency modulated (LFM) signals using dual-parallel Mach-Zehnder modulator (DPMZM). In the receiving part, dual-drive (DDMZM) (MZM) are cascaded optical mixing de-chirp processing with pseudo-random bit sequence (PRBS). Then mixed signal be gathered by an analog-to-digital converter (ADC) at sampling rate that is well below Nyquist...
Image-reject radio frequency (RF) receiver is the backbone of modern RF systems, but often suffers from limited bandwidth, local oscillator (LO) leakage, even-order distortion, and I/Q imbalance. A wideband photonic image-reject based on two phase-modulators (PMs) in a Sagnac loop an balanced detector proposed. In experiment, excellent amplitude balance (<; 0.8 dB) phase 0.7 degrees) over wide operating 8 to 40 GHz are achieved. Due detection, distortion dc-offset significantly suppressed....
A novel (to the best of our knowledge) photonic approach for generation background-free frequency-doubled phase-coded microwave pulses with immunity to periodic power fading is proposed. By switching between carrier suppressed double sideband (CS-DSB) modulation reverse quadrature phase difference and single (CS-SSB) modulation, frequency doubling local oscillator signal can be obtained. Thanks CS-DSB/CS-SSB generated directly transmitted via single-mode fiber (SMF) without influence fading....
We demonstrated efficient generation of intense vacuum ultraviolet pulses at 133 nm directly from a 400-nm filament in argon gas. The conversion efficiency was significantly enhanced by adding coaxial 267-nm pump pulse to dramatically ameliorate the phase matching conditions, as dispersion originated neutral atoms compensated additional free electrons stemmed ionization induced dual-color fields. Such robust all-optical phase-matching control shown be dependent upon intensity and temporal...
A photonics-based channel bandwidth tunable microwave frequency measurement (MFM) is analyzed and verified, which implemented based on the principle of frequency-to-phase-slope mapping (FTPSM) in stimulated Brillouin scattering (SBS). The spectrum-controlled phase shift curve created by using an optical comb (OFC) pump instead a single pump. As result, response superimposed to further realize flexible adjustable bandwidth. Meanwhile, thanks relationship between OFC unknown signal, can be...
Based on the theory of microwave photonics, we propose a new scheme to measure Doppler frequency shift (DFS) in radar system. This is single-channel system based dual-parallel Mach–Zehnder modulator (DPMZM). And frequencies transmitted signal and reference are added together form combined signal. Then add echo two sub-modulators (sub-MZMs) DPMZM, respectively. By measuring beat output by photoelectric (PD), DFS can be measured, whose error maintained at −0.8Hz 0.8Hz. The DFS's direction...
A novel photonics-based technique of microwave frequency measurement (MFM) is proposed and verified. The method implemented by introducing a parameter called Brillouin phase-gain ratio (BPGR) which combines phase shift gain, where BPGR features linear response to the unknown signal frequency. Moreover, it enables enlarge channel bandwidth relative applying only spectrum slope or gain slope, important problem pump-power-dependency affecting system performance can be alleviated. experiment...
Microwave frequency measurement system is the chief component of receiver, which indispensable significance in electronic warfare and modern radar. In this work, a simple novel that detects at fixed low-frequency point established, implemented by introducing down-conversion, conjunction with Brillouin Technique. A swept signal applied for purpose carrying sideband unknown signal. The frequency-shifted carrier realized through all-optical shifting process, used to downconvert signals....
We demonstrate a spectrum-continuous narrowband filter based on multi-section Mach-Zehnder interferometer (MZI) structures silicon nitride platform. Enhanced in-band flatness and sharp out-of-band roll-off features are achieved by cascading MZIs of specific functionalities in series. This is fabricated single chip with total waveguide length exceeding 237 cm. experimentally for the first time, to best our knowledge, four-channel 3 dB bandwidth 580 MHz, 1 fluctuation as high 356 an excellent...
We study the frequency up- and down-conversion based on cascaded process which accompanies large phase mismatching between fundamental intermediate waves. So, for example, we propose using Second-Harmonic Generation (SHG) to implement conversion process, is similar that occurring in a medium with cubic susceptibility. At matching wave third-harmonic wave, Third Harmonic (THG) occurs high efficiency (94.5%). demonstrate may also influence negatively processes. SHG combined quadratic nonlinear...
<title>Abstract</title> Cancer invasion is driven by complex interactions between tumor cells and microenvironment (TME), which promote cancer cell plasticity remodel the TME to support invasive behavior. In bladder cancer, into muscularis propria reduces five-year survival rate below 30%. Despite this clinical significance, molecular mechanisms underlying remain poorly understood. Current studies predominantly focus on comparison non-invasive tissue, leaving dynamic variation largely...
The sparse recovery (SR) space-time adaptive processing (STAP) method has excellent clutter suppression performance under the condition of limited observation samples. However, when cluttering is nonlinear in a spatial-Doppler profile, it will cause an off-grid effect and reduce performance. A meshless search using meta-heuristic algorithm (MH) can completely eliminate theory. Therefore, genetic (GA), differential evolution (DE), particle swarm optimization (PSO), grey wolf (GWO) methods are...
A triple frequency- and phase-tunable optoelectronic oscillator based on stimulated Brillouin scattering effect carrier phase-shifted single sideband (CPS-SSB) modulation is proposed theoretically analyzed. In the structure, three pump lights are used to generate an signal in which frequency equal shift through gain–loss compensation. Benefiting from wavelength-dependent characteristic of shift, frequency-tunable can be realized by directly tuning laser source. The CPS-SSB lies combination a...