A5100355229- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photorefractive and Nonlinear Optics
- Advanced Fiber Optic Sensors
- Opinion Dynamics and Social Influence
- Topological Materials and Phenomena
- Complex Network Analysis Techniques
- Physics of Superconductivity and Magnetism
- Complex Systems and Time Series Analysis
- Misinformation and Its Impacts
- Laser-Plasma Interactions and Diagnostics
- Photonic Crystals and Applications
- Advanced Optical Sensing Technologies
- Energy Load and Power Forecasting
- Radio Frequency Integrated Circuit Design
- Advanced X-ray Imaging Techniques
- Optical Coherence Tomography Applications
- Fluid Dynamics and Vibration Analysis
- Wave and Wind Energy Systems
- Erosion and Abrasive Machining
- Thermal Radiation and Cooling Technologies
- Handwritten Text Recognition Techniques
Nanjing University
2025
Harbin Institute of Technology
2021-2024
University of Massachusetts Dartmouth
2014-2024
Inner Mongolia University of Finance and Economics
2024
ShanghaiTech University
2022-2024
Chinese Academy of Sciences
2018-2024
Ningbo Institute of Industrial Technology
2024
Wuhan University of Technology
2024
Krirk University
2023
MaxLinear (United States)
2023
Quasi-phase-matched (QPM) wavelength converters are highly desirable for emerging nonlinear optics applications in photonic integrated circuits, but available waveguide and quasi-phase-matching technologies have so far constrained their realization. In this work, we present a periodically poled lithium niobate (LN) on silicon nitride–thin film LN platform. It contains submicrometer core enhancing interactions that is more than one order of magnitude smaller those previous QPM waveguides....
An ideal photonic integrated circuit for nonlinear applications requires high optical nonlinearities and low loss. This work demonstrates a heterogeneous platform by bonding lithium niobate (LN) thin films onto silicon nitride (Si3N4) waveguide layer on silicon. It not only provides large second- third-order coefficients, but also shows propagation loss in both the Si3N4 LN-Si3N4 waveguides. The tapers enable low-loss-mode transitions between these two is essential various on-chip...
Layered materials, such as the transition metal dichalcogenide molybdenum disulfide (MoS2), are promising materials for ion storage in electrodes of rechargeable batteries. To extend application range these to ions beyond lithium-ions, we used van der Waals corrected density functional theory simulations study intercalation and diffusion lithium (Li), sodium (Na), magnesium (Mg) 2H structure MoS2 a function interlayer spacing. All three species exhibit an optimal energy, which is reached at...
Lithium niobate (LiNbO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> ) is an excellent electrooptic material due to its low loss, large coefficient, linear modulation response, and bandwidth. In this letter, we present the first LiNbO thin-film Mach-Zehnder optical modulator that employs silicon nitride surface ridge waveguides. The contains a 1.2-cm-long push-pull phase section pair of multimode interferometric 3-dB couplers. It...
Abstract Photonics‐based microwave frequency mixing provides distinct features in terms of wide coverage, broad instantaneous bandwidth, small frequency‐dependent loss, and immunity to electromagnetic interference as compared with its electronic counterpart, which can be a key technical enabler for future broadband multifunctional RF systems. Herein, all‐optical optoelectronic techniques are reviewed, an emphasis on the latest advances photonics‐based mixers improved performance conversion...
This paper concerns the modeling, design, and experimental validation of coherent phase modulated RF/optical link employing an ACP-PPLL linear demodulator. From theoretical closed-form solutions for gain, noise figure, SFDR are derived. Then, two examples design addressed: one with 100-MHz 500-MHz bandwidth. Finally, was performed using design. The results in good agreement prediction.
The scientific community has witnessed tremendous expansion of research on layered (i.e. two-dimensional, 2D) materials, with increasing recent focus applications to photonics. Layered materials are particularly exciting for manipulating light in the confined geometry photonic integrated circuits, where key material properties include strong and controllable light-matter interaction, limited optical loss. feature tunable properties, phases that promising electro-optics, a panoply polymorphs...
Abstract Solar flares are one of the strongest outbursts solar activity, posing a serious threat to Earth’s critical infrastructure, such as communications, navigation, power, and aviation. Therefore, it is essential accurately predict in order ensure safety human activities. Currently, research focuses on two directions: firstly, identifying predictors with more physical information higher prediction accuracy, secondly, building flare models that can effectively handle complex observational...
Abstract Nonreciprocal charge transport phenomena are widely studied in two-dimensional superconductors, which demonstrate unidirectional-anisotropy magnetoresistances as a result of symmetry breaking. Here, we report strong nonreciprocal phenomenon superconducting CsV 3 Sb 5 thin flakes. The second harmonic voltages, mainly originating from the rectification effect vortex motion, unambiguously developed with in-plane and out-of-plane magnetic fields, their magnitudes comparable to those...
Phase modulator nonlinearity is a major problem for implementing an optical phase-locked loop (OPLL) phase demodulator. In this letter, we report improved InP design that uses detuned shallow multiquantum-well structure. The shows high linearity and low loss. Its IP3 loss per unit length are ~ 4 π/mm 0.9 dB/mm, respectively. This thus suitable the OPLL linear
The first monolithically integrated optical phase-locked loop (OPLL) employing attenuating-counter-propagating waves is presented. It demonstrates the highest dynamic range among OPLLs. Its performance limited by bandwidth and linearity of photodetectors used in OPLL.
Highly sensitive infrared photodetectors are needed in numerous sensing and imaging applications. In this paper, we report on extended short-wave (e-SWIR) avalanche photodiodes (APDs) capable of operating at room temperature (RT). To extend the detection wavelength, e-SWIR APD utilizes a higher indium (In) composition, specifically In0.3Ga0.7As0.25Sb0.75/GaSb heterostructures. The cut-off wavelength is successfully to 2.6 µm RT, as verified by Fourier Transform Infrared Spectrometer (FTIR)...
In order to achieve small size, light weight, and immunity electromagnetic interference, it is desirable replace bulky coaxial cables with optical fiber in advanced radar front-ends. Such applications require a large dynamic range that beyond the reach of conventional intensity modulation–direct detection fiber-optic links. A coherent link employing an phase-locked loop (OPLL) phase demodulator has been proposed as solution this problem. The challenge practical realization OPLL satisfies...
Optical vortices, beams with spiral wavefronts and screw phase dislocations have been explored in applications optical manipulation, quantum optics, the next generation of communications. In traditional methods, vortices are generated using space light modulators or plates, which would sharply decrease integration systems. Different from previous transverse mode conversion outside cavity, here we experimentally demonstrate a direct ultrafast vortex beam Tm:CaYAlO4 oscillator by pattern...
Phase modulated coherent fiberoptic links can potentially provide exceptionally high spurious free dynamic range (SFDR) and low noise figure (NF). Critical issue is the development of a strictly linear phase demodulator. In this paper we describe demodulator employing locked loop discriminator. Implementing PPLL on single substrate using state-of-the-art components could yield an SFDR better than 145 dB/Hz2/3 NF lower 3dB.
The RF/photonic link is the basic element of microwave photonics. Previous RF photonic links often rely on optical intensity modulation. inherent modulation nonlinearity leads to inadequate spurious free dynamic range (SFDR) for many sought-after applications in radar. A new phase-modulated (PM) with an phase-locked loop (OPLL) demodulator could afford a promising solution SFDR. However, efficacy PM approach remained unsubstantiated as previous OPLL implementations had too restricted...
We present the first self-contained photonic integrated circuit (PIC) that downconverts RF signals. The frequency conversion is achieved by nonlinear optical phase modulation inside a Mach-Zehnder (MZ) modulator. linearity enhanced canceling nonlinearities of and MZ PIC demonstrated ~110 dB · Hz <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2/3</sup> spurious-free dynamic range.
How to exploit social networks make internet content spread rapidly and consistently is an interesting question in marketing management. Although epidemic models have been employed comprehend the dynamics of content, such as viral videos, effects advertising individual sharing on information dissemination are difficult distinguish. This gap forbids us evaluate efficiency strategies. In this paper, we modify a classic mean-field SIR (susceptible-infected-recovered) model, incorporating...
Frequency down-conversion is important to radar front-end. In this work, we achieve efficient RF frequency using a coupled quantum-well optical phase modulator fabricated on an indium phosphide material platform. When used in conjunction with phase-locked loop-based linear demodulator, 1-mm-long device exhibits loss of ~2.6 dB and spurious-free dynamic range ~125 dB·Hz <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2/3</sup> the photodetector...
Future communication systems will require high data rates and flexible modulation. Direct optical phase modulation of two microchip lasers by information-bearing signals allows for high-rate delivery via fiber to a basestation. At the basestation, coherent are combined with reference in photodetector produce microwave/millimeter-wave carrier arbitrary M-ary quadrature amplitude modulation, which can then be transmitted over wireless channel. Rapid tuning carrier, scheme, rate is achievable...