A5101536559- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Chinese history and philosophy
- Atherosclerosis and Cardiovascular Diseases
- Power Systems and Renewable Energy
- Neural Networks and Reservoir Computing
- Smart Grid Energy Management
- Microgrid Control and Optimization
- Electric Vehicles and Infrastructure
- Japanese History and Culture
- Energy, Environment, and Transportation Policies
- Immune Response and Inflammation
- Computational Drug Discovery Methods
- High-Voltage Power Transmission Systems
- Sensorless Control of Electric Motors
- Power Systems Fault Detection
- Biomarkers in Disease Mechanisms
- Gas Sensing Nanomaterials and Sensors
- Full-Duplex Wireless Communications
- Education, Safety, and Science Studies
- Nanoparticles: synthesis and applications
- Nanoparticle-Based Drug Delivery
Chinese Academy of Sciences
2001-2024
University of Chinese Academy of Sciences
2020-2024
Shanghai Advanced Research Institute
2022-2024
State Grid Corporation of China (China)
2024
The University of Texas Southwestern Medical Center
2024
Westlake University
2024
Weifang Medical University
2024
Renji Hospital
2024
Shanghai Jiao Tong University
2024
Institute of Semiconductors
2020-2023
Convolutional neural networks are an important category of deep learning, currently facing the limitations electrical frequency and memory access time in massive data processing. Optical computing has been demonstrated to enable significant improvements terms processing speeds energy efficiency. However, most present optical schemes hardly scalable since number elements typically increases quadratically with computational matrix size. Here, a compact on-chip convolutional unit is fabricated...
A photonic system based on a two-channel structure is proposed to realize the simultaneous measurement of angle-of-arrival (AOA) and Doppler-frequency-shift (DFS) microwave signal without direction ambiguity. The unambiguous AOA can be acquired by recording power output intermediate frequency (IF) radio (RF) from two channels. DFS determined IF signal. Estimated experimental results show that −66.44° 66.44° with errors less than ±2.2° an ±0.6 Hz are implemented.
We report a novel temperature sensor based on Fourier domain mode-locked optoelectronic oscillator (FDML OEO) and temperature-to-time mapping. In the proposed scheme, narrow bandpass electrical filter is inserted into FDML OEO cavity. The information mapped to time interval of output pulses due temperature-sensitive bidirectional scanning property OEO. Compared with other OEO-based sensors, scheme avoids needs wideband spectrum analyzers, since can be interrogated using low-speed...
We propose a microwave photonic frequency measurement scheme based dual-polarization dual-drive Mach-Zehnder modulator (DP-DDMZM) and -to-time mapping. A compact system is guaranteed thanks to the use of single modulator, multi-tone ability achieved due principle frequency-to-time In proposed scheme, unknown signal mixed with linearly chirped help DP-DDMZM, mixing product selected by an electrical bandpass filter achieve Single are successfully demonstrated in experiment, errors less than ± 3 MHz.
Waveguide-integrated photodetectors are essential components in integrated photonic circuits since they facilitate light conversion into electrical signals. Nonetheless, optical absorption and carrier collection can significantly affect the device performance. As a solution to this issue, plasmonic slot waveguides confine energy within subwavelength scale photoconductive detector, enhancing providing extremely short channels collect carriers. Two-dimensional van der Waals layered palladium...
We report a photonic scheme to generate multiband and multi-format microwave signals based on commercial dual-polarization Mach-Zehnder modulator (DP-MZM). The key novelty of this work is the compact signal generator benefitting from single flexible at multiband. upper (MZM) DP-MZM used an optical frequency comb, while lower MZM driven by baseband electrical coding or single-chirp obtain modulated signal. proposed theoretically analyzed experimentally demonstrated. A phase-coded with bit...
SCARF1 (scavenger receptor class F member 1, SREC-1 or SR-F1) is a type I transmembrane protein that recognizes multiple endogenous and exogenous ligands such as modified low-density lipoproteins (LDLs) important for maintaining homeostasis immunity. But the structural information mechanisms of ligand recognition are largely unavailable. Here, we solve crystal structures N-terminal fragments human SCARF1, which show forms homodimers its epidermal growth factor (EGF)-like domains adopt...
We propose a photonic method to generate and transmit dual-band dual-chirp microwave waveforms based on dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM). The key novelty of this work is the generation with flexible central frequency relationship meet requirement radar system, transmission generated elimination power fading. In proposed method, are by applying two different RF signals parabolic coding signal DP-DPMZM. By properly adjusting DC biases <italic...
We propose a photonic scheme to generate binary phase-coded microwave pulses and dual-chirp waveforms without baseband-modulated signals (background noise) based on dual-polarization dual-drive Mach-Zehnder modulator (DP-DDMZM) which contains x-DDMZM y-DDMZM at two different polarization states. A radio frequency (RF) signal from source is transferred into differential RF employed one arm of y-DDMZM, while baseband an arbitrary waveform generator divided by electronic coupler then driven the...
We propose a microwave photonic scheme to generate rectangular and triangular waveforms by external modulation. Different from previous works, the duty circle of generated in our is freely tunable. The main structure based on Mach-Zehnder modulator tunable optical delay line. By power splitting time-delay tuning two polarization branches, or can be obtained superposition beating signals. Moreover, RF modulation index this work unfixed, which increases flexibility system. proposed...
For emerging application fields such as autonomous driving and computing vision, which demands the real-time response of massive information, advanced image processing techniques on artificial neural networks (ANNs) are crucial. However, with increasing task complexity, electrical hardware limited by well-known von Neumann bottleneck is inadequate to meet these extreme requirements in speed power. We propose an incoherent optical matrix operator dynamically manipulating parameters lightwave...
Frequency estimation of microwave signals is a crucial functionality for applications ranging from biomedical engineering to electronic warfare systems. Photonics-based frequency measurement systems offer advantages flexible reconfigurability and wide bandwidth compard methods. However, photonic based are limited by trade-offs between range accuracy. Here, we propose experimentally demonstrate identification system with ultrahigh accuracy 900 kHz, large 39 GHz, the capability multiple...
We propose a photonic scheme to generate dual-chirp microwave waveforms based on widely tunable optoelectronic oscillator (OEO) using dual-polarization dual-drive Mach-Zehnder modulator (DP-DDMZM). The upper DDMZM is properly biased serve as phase and further constructs OEO loop radio frequency (RF). lower injected by the combination of RF single-chirp signal utilized waveform with an arbitrarily central frequency. from replaces external millimeter-wave source in our scheme, which improves...
We propose and experimentally demonstrate a microwave frequency measurement system based on the photonic technique. An amplitude comparison function is constructed to perform frequency-to-power mapping non-sliced broadband optical source. The results are fed into machine learning module which can be utilized minimize differential mode noise of caused by polarization fluctuation. reconfigurable with adjustable bandwidth adjusting dispersion group delay signals at orthogonal polarizations...
We propose and demonstrate a photonic scheme to generate reconfigurable radar waveforms based on an integrated silicon in-phase quadrature-phase (IQ) modulator. It has significant advantages over commercial LiNbO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> modulator-based schemes in terms of the compatibility with CMOS technology, compact size, light weight, low cost power consumption. Experimentally, multi-format waveforms,...
We present a photonics-based method of estimating Doppler frequency shift (DFS) and angle arrival (AOA). The proposed identification for the DFS AOA is simultaneous unambiguous. A reference radio signal introduced to realize downconversion. By monitoring downconverted signals generated after photodetection, direction ambiguity canceled out. can be instantaneously calculated through two via Hilbert transform. Experimental results verify that -77.90° 77.90° measurement with errors less than...
As a leading branch of deep learning, the convolutional neural network (CNN) is inspired by natural visual perceptron mechanism living things, showing great application in image recognition, language processing, and other fields. Photonics technology provides new route for intelligent signal processing with dramatic potential its ultralarge bandwidth ultralow power consumption, which automatically completes computing process after propagates through processor an analog architecture. In this...
We propose a compact photonic system based on dual-polarization dual-drive Mach–Zehnder modulator (DP-DDMZM) to measure Doppler-frequency-shift (DFS) and angle-of-arrival (AOA). Compared previous research, the key innovation of our is that self-interference signals can be eliminated while maintaining excellent measurement performance. The sub-DDMZMs are driven by echo reference two intermediate frequency (IF) generated after photoelectric detection from orthogonal polarization channels. By...
SCARF1 (scavenger receptor class F member 1, SREC-1 or SR-F1) is a type I transmembrane protein that recognizes multiple endogenous and exogenous ligands such as modified low-density lipoproteins (LDLs) important for maintaining homeostasis immunity. But the structural information mechanisms of ligand recognition are largely unavailable. Here, we solve crystal structures N-terminal fragments human SCARF1, which show forms homodimers its epidermal growth factor (EGF)-like domains adopt...
A compact photonics-assisted scheme for short-time Fourier transform (STFT) is proposed and experimentally demonstrated. In the scheme, a periodic chirp signal an electrical bandpass filter (BPF) are applied to achieve sliding window function. At same time, BPF utilized realize frequency-to-time mapping obtain frequency-domain information in each time window. The STFT can be realized by splicing corresponding different windows into two-dimensional time-frequency graph. Experimentally, STFTs...