A5052021034- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Photonic and Optical Devices
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Photorefractive and Nonlinear Optics
- Magnetic properties of thin films
- Ultra-Wideband Communications Technology
- graph theory and CDMA systems
- Advanced MEMS and NEMS Technologies
- Full-Duplex Wireless Communications
- Semiconductor materials and devices
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Advancements in Semiconductor Devices and Circuit Design
- Surface Roughness and Optical Measurements
- Photonic Crystals and Applications
- Remote Sensing and LiDAR Applications
- Terahertz technology and applications
- Nuclear Physics and Applications
- Power Line Inspection Robots
- Gyrotron and Vacuum Electronics Research
- Biosensors and Analytical Detection
Nankai University
2024-2025
Sichuan University
2025
Chengdu Women's and Children's Central Hospital
2025
State Grid Corporation of China (China)
2023-2024
Beijing University of Technology
2021-2024
City University of Hong Kong
2022-2024
The University of Texas Health Science Center at Houston
2024
Huzhou Vocational and Technical College
2022
Institute of Semiconductors
2001-2021
Chinese Academy of Sciences
2001-2021
We report a photonic scheme to generate background-free frequency-doubled binary phase-coded microwave pulses. The key component is dual-polarization dual-parallel Mach-Zehnder modulator that used realize phase modulation and carrier-suppressed double second-order sideband at two orthogonal polarization states, respectively. π jump of the pulse dependent on polarity coding signal rather than its amplitude. Besides, generated pulses are free from baseband-modulated signals, because optical...
Thin‐film lithium niobate on insulator (LNOI) is a promising platform for optical communications, microwave photonics, and quantum technologies. While many high‐performance devices like electro‐optic modulators frequency comb sources have been achieved LNOI platform, it remains challenging to realize photodetectors (PDs) using simple low‐cost fabrication techniques. 2D materials are excellent candidates achieve photodetection since they feature strong light‐matter interaction, mechanical...
In recent years, laser scanners integrated with Unmanned Aerial Vehicles (UAVs) have exhibited great potential in conducting power line inspections harsh environments. The point clouds collected for numerous advantages over remote image data. However, cloud-based individual extraction, which is a crucial technology required inspections, still poses several challenges such as massive 3D points, imbalanced category etc. Moreover, various scenarios, previous studies often require manual setup...
Preventing venous thromboembolism (VTE) in obstetrics remains challenging, with cases still occurring despite preventive measures. The aim of this study is to investigate the underlying causes by analyzing potential issues current postpartum VTE prevention strategies China. This retrospective was conducted our hospital from May 2021 August 2024. risk assessed using Chinese Expert Consensus on Prevention and Treatment during Pregnancy Puerperium (Chinese Consensus), measures were implemented...
We report a photonic approach to simultaneously realize frequency upconversion and phase coding of radio-frequency (RF) signal based on polarization manipulation optical signals. An intermediate (IF) is upconverted the local (LO) band using dual-polarization dual-parallel Mach–Zehnder modulator, while high-speed modulator used signal. The key advantage proposed method that no or electrical filters are required remove residual IF, LO, undesired downconverted signals, which ensures broad...
We propose a microwave photonic link to transmit dual-chirp waveform over fiber with compensation of dispersion-induced power fading. In center office (CO), we use polarization-dependent dual-parallel Mach-Zehnder modulator (DPMZM) which is driven by radio frequency (RF) carrier and baseband single-chirped realize carrier-suppressed dual-sideband (CS-DSB) modulation at two orthogonal polarization states. When the CS-DSB optical signal detected photodetector (PD) base station (BS), generated....
A photonic method to generate and transmit quadruple bandwidth dual-band dual-chirp microwave waveforms with immunity fiber chromatic dispersion induced power fading is proposed experimentally demonstrated, which suitable for Doppler blind–speed elimination, small target detection, multiband detection in radar systems. dual-polarization dual-parallel Mach–Zehnder modulator utilized realize carrier-suppressed harmonic single-sideband modulation of a radio frequency carrier DSB baseband...
We report a technique to overcome chromatic-dispersion-induced power fading (CDIP) for bandwidth-quadrupling dual-chirp microwave signals over fiber transmission. Normally, are generated using double-sideband (DSB) modulation. However, DSB modulation suffers from CDIP significantly. propose carrier-frequency shift method suppress the based on dual-polarization dual-parallel Mach-Zehnder modulator. In addition, bandwidth of signal can be quadrupled by properly setting biases The proposed is...
We report a photonic radio frequency (RF) self-interference cancellation (SIC) and harmonic down-conversion (HDC) scheme based on dual-parallel dual-drive Mach-Zehnder modulator (DDMZM). The proposed can eliminate the chromatic-dispersion induced power fading (CDIP) effect thus is very suitable for in-band full-duplex (IBFD) radio-over-fiber (ROF) system. RF signal directly cancelled in optical domain, which overcomes electronics bottleneck limitation of electrical SIC. Moreover, HDC allows...
We report a polarization manipulated Fourier domain mode-locked optoelectronic oscillator (FDML-OEO) using modulator (PolM). Frequency and bandwidth doubling linearly chirped microwave waveforms (LCMWs) are generated from PolM-based FDML-OEO. The multiplying operation is capable of increasing the frequency LCMWs, which doubles time-bandwidth product LCMWs makes it possible to increase center beyond optical modulator. Moreover, by simply adding other laser diode, also generate dual-chirp...
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...
Heat-assisted magnetic recording (HAMR) is being developed as the next generation technology. Critical components of this technology, such plasmonic near-field transducer and high anisotropy granular FePt media, well demonstrations fully integrated drives have been reported. One remaining ongoing challenges in general HAMR particular has demonstration linear density recording, approaching grain-size (GS) limit a clear pathway to smaller GSs while maintaining good properties distributions....
We present a photonic approach to generate and transmit dual-chirp microwave waveform with antidispersion performance. Traditionally, the signal generated based on double-sideband (DSB) modulation suffers from power fading significantly. propose DSB-based transmitter that can eliminate chromatic dispersion-induced (CDIP) over fiber transmission. The CDIP elimination, rather than compensation, ensures working bandwidth of is not limited by periodical fading. proposed scheme makes free direct...
In article number 2300045 by Edwin Yue-Bun Pun, Cheng Wang and co-workers, a lithium niobate-on-insulator two-dimensional material (LNOI–2D) photodetector (PD) platform is proposed. The high-speed LNOI–graphene PD suitable for data recovery of modulated optical signals, the high-responsivity LNOI–tellurium ideal monitoring DC bias modulators.
We propose and demonstrate a Frequency Modulated Continuous Wave (FMCW) laser source realized through sideband modulation four-wave mixing (FWM). A silicon waveguide, featuring reverse-biased P-i-N junction, is designed to excite FWM process. With the increase of applied bias voltage, efficiency effect in waveguide improved due more effective removal free-carriers. The integrated enables high conversion −12 dB. In experiment, radio frequency (RF) signal swept over range 9 GHz 11 GHz. was...
Abstract Van der Waals (vdWs) heterostructures enable the fabrication of various optoelectronic devices with unprecedented functionalities, particularly antiambipolar transistors. Different methods have been employed to construct such devices; however, their integration and versatility remain significantly constrained. Here, large‐scale vdWs heterostructure arrays capable implementing self‐adaptive artificial perception systems reconfigurable logic gates are verified adopting 2D Te/WS 2...
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 present a photonic approach to realize radio frequency (RF) down-conversion and intermediate (IF) channel switching for satellite communication. Conventionally, RF mixers always suffer from limitations of one operational state IF channel. proposed repeater that can multiple states different switching. Two separated ports two independent local oscillator ensure the down-convert signals in bands simultaneously. Based on characteristic orthogonally polarized optical cannot beat with each...