A5100351349- Advanced Fiber Laser Technologies
- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Neural Networks and Reservoir Computing
- Radio Frequency Integrated Circuit Design
- Gyrotron and Vacuum Electronics Research
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Photonic Crystals and Applications
- Microwave Engineering and Waveguides
- Advanced X-ray Imaging Techniques
- Semiconductor materials and devices
- Particle Accelerators and Free-Electron Lasers
- Solid State Laser Technologies
- Optical Systems and Laser Technology
- Particle accelerators and beam dynamics
- Optical Coatings and Gratings
- Electromagnetic Compatibility and Noise Suppression
- Advanced Measurement and Detection Methods
- Semiconductor Quantum Structures and Devices
- Advancements in PLL and VCO Technologies
- 3D IC and TSV technologies
Institute of Semiconductors
2016-2025
Chinese Academy of Sciences
2016-2025
Chinese University of Hong Kong, Shenzhen
2025
Institute of Microelectronics
2011-2025
Queensland University of Technology
2025
Zhejiang Normal University
2025
Shenzhen University
2017-2024
University of Chinese Academy of Sciences
2013-2024
State Key Laboratory on Integrated Optoelectronics
2015-2024
Institute of High Energy Physics
2011-2024
An optoelectronic oscillator (OEO) is a microwave photonic system with positive feedback loop used to create oscillation ultra-low phase noise thanks the employment of high-quality-factor energy storage element, such as fiber delay line. For many applications, frequency-tunable signal or waveform, linearly chirped waveform (LCMW), also needed. Due long characteristic time constant required for building up stable at an mode, it impossible generate LCMW large chirp rate using conventional OEO....
Abstract Metasurface provides a novel way to modulate light energy at specific wavelengths, namely resonances, where there is sharp drop in the transmission spectrum. Based on relationship between resonant position and environmental condition, various refractive index detection methods have been developed. However, resonance spectrum strongly affected by instrumental fluctuations, current researches usually focus improvement of single sensing performance metric, such as Q factor,...
A novel approach to implementing a narrow-passband and frequency-tunable microwave photonic filter (MPF) based on phase-modulation intensity-modulation conversion in phase-shifted fiber Bragg grating (PS-FBG) is proposed experimentally demonstrated. In the MPF, phase-modulated signal sent PS-FBG. If one of sidebands falls notch PS-FBG, converted an intensity-modulated signal. Due ultra-narrow with passband realized. The tunability achieved by tuning wavelength optical carrier. theoretical...
Integrated Microwave photonics (IMWP) signal processing using Photonic Circuits (PICs) has attracted a great deal of attention in recent years as an enabling technology for number functionalities not attainable by purely microwave solutions. In this context, integrated waveguide Bragg grating (WBG) devices constitute particularly attractive approach thanks to their compactness and flexibility producing arbitrarily defined amplitude phase responses, directly acting on coupling coefficient...
Mode control in a laser cavity is critical for stable single-mode operation of ring laser. In this study we propose and experimentally demonstrate an electrically pumped parity-time (PT)-symmetric microring with precise mode control, to achieve wavelength-tunable lasing improved suppression ratio. The proposed PT-symmetric implemented based on photonic integrated circuit consisting two mutually coupled active resonators. By incorporating multiple semiconductor optical amplifiers the...
A broadband and fabrication-tolerant on-chip scalable mode-division multiplexing (MDM) scheme based on mode-evolution counter-tapered couplers is designed experimentally demonstrated a silicon-on-insulator (SOI) platform. Due to the advantage offered by mode evolution, two-mode MDM link exhibits very large, -1 dB bandwidth of >180 nm, which considerably larger than most previously reported links whether they are mode-interference or evolution. In addition, performance metrics remain stable...
An optoelectronic oscillator (OEO) is a microwave photonic system that produces signals with ultralow phase noise using high-quality-factor optical energy storage element. This type of desired in various practical applications, such as communication links, signal processing, radar, metrology, radio astronomy, and reference clock distribution. Recently, new mode control selection methods based on Fourier domain mode-locking parity-time symmetry have been proposed experimentally demonstrated...
With the rapid development of modern communication systems, radar and wireless services, microwave signal with high-frequency, high-spectral-purity frequency tunability as well generator light weight, compact size, power-efficient low cost are increasingly demanded. Integrated photonics (IMWP) is regarded a prospective way to meet these demands by hybridizing circuits on chip. In this article, we propose experimentally demonstrate an integrated optoelectronic oscillator (IOEO). All devices...
This paper presents a review and discussion of the applications microwave photonic techniques functionalities to field optical fiber sensors. A specific end-to end model for its characterization is presented here first time that yields sensitivity different figures merit in terms measured variations. Experimental characterize these systems are two high-resolution discrete quasidistributed sensing illustrated. Future directions research also highlighted.
Symmetry plays a crucial role in explorations of the laws nature. Parity-time (PT) symmetry phenomena can lead to entirely real spectra non-Hermitian systems, which attracts considerable attention fields optics and electronics because these provide new tool for manipulation oscillation modes non-reciprocal signal transmission. A potential field application is microwave photonics, an interdisciplinary interaction between microwaves optical signals exploited. In this article, we report...
The noise-suppression techniques of label-free optical ring resonator sensors are crucial to improve their practical sensing capabilities for biochemical analysis and detection in extremely small concentration. We have developed a self-referencing optofluidic (SR-OFRR) vastly its capability as biosensor. By monitoring the mode-splitting separation generated on coupled system, common-mode noise is suppressed by 2 orders magnitude without any external techniques. In this work, we first carried...
Photonic-based instantaneous frequency measurement (IFM) of unknown microwave signals offers improved flexibility and range as compared with electronic solutions. However, no photonic platform has ever demonstrated the key capability to perform dynamic IFM, required in real-world applications. In addition, all demonstrations date employ bulky components or need high optical power for operation. Here we demonstrate an integrated IFM system that can identify frequency-varying a manner, without...
Microwave photonic approaches for the generation of microwave signals have attracted substantial attention in recent years, thanks to significant advantages brought by photonics technology, such as high frequency, large bandwidth, and immunity electromagnetic interference. An optoelectronic oscillator (OEO) is a paradigmatic that produces with ultra-low phase noise, high-quality-factor OEO cavity achieved help optical energy storage elements, low-loss fiber or resonator. Different...
An all-fiber temporal photonic fractional Hilbert transform (FHT) based on a fiber Bragg grating (FBG) is proposed and investigated, for the first time to our knowledge. The FHT designed discrete layer peeling method, which enables FBG have strong strength. Numerical results show that can be used efficiently accurately implement broadband all-optical an arbitrary optical waveform with bandwidth up hundreds of gigahertz.
A wideband photonic temporal Hilbert transformer implemented based on a single fiber Bragg grating (FBG) is experimentally demonstrated. Two FBGs with bandwidths of 50 and 100 GHz are designed fabricated. The use the fabricated to perform real-time transformation Gaussian-like optical pulse bandwidth about 12
Abstract Amplification of signal intensity is essential for initiating physical processes, diagnostics, sensing, communications and measurement. During traditional amplification, the amplified by multiplying carriers through an active gain process, requiring use external power source. In addition, degraded noise distortions that typically accompany processes. We show noiseless amplification repetitive optical pulse waveforms with from 2 to ~20 without using gain. The proposed method uses a...
The disadvantages of particle swarm optimization (PSO) algorithm are that it is easy to fall into local optimum in high-dimensional space and has a low convergence rate the iterative process. To deal with these problems, an adaptive based on directed weighted complex network (DWCNPSO) proposed. Particles can be scattered uniformly over search by using topology small-world initialize particles position. At same time, evolutionary mechanism dynamic employed make evolve scale-free when...
A novel approach to generating a chirped microwave waveform with continuously tunable chirp rate based on temporal interferometer incorporating an optically pumped linearly fiber Bragg grating (LCFBG) is proposed and demonstrated. The realized using Mach-Zehnder (MZI) that incorporates LCFBG dispersion compensating generate interference pattern instantaneous frequency proportional time. its shape identical the generated at output of photodetector. tuning by pumping written in...
The optoelectronic oscillator (OEO) has attracted a great deal of attention in recent years as high-performance microwave source. Thanks to the high quality-factor (Q-factor) provided by optical delay line, OEO can generate spectrally pure signals with ultralow phase noise. Various approaches for realization architectures generation single-frequency have been demonstrated past two decades. Seeded signal generated OEO, complex waveforms demonstrated, which be used applications such radar and...
This paper presents a review and discussion of the directly modulated semiconductor lasers their applications to optical communications microwave photonics. A detailed comprehensive demonstration from development history specific techniques on measurement, analysis, packaging is provided for first time best our knowledge. few typical based are also illustrated, such as fiber communications, free-space Future directions research highlighted.
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...