A5101715975- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Photonic Crystal and Fiber Optics
- Advanced Fiber Optic Sensors
- PAPR reduction in OFDM
- Advanced Optical Network Technologies
- Optical Wireless Communication Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Memory and Neural Computing
- Advanced Wireless Communication Techniques
- Photoreceptor and optogenetics research
- graph theory and CDMA systems
- Transition Metal Oxide Nanomaterials
- Semiconductor Quantum Structures and Devices
- Dental Radiography and Imaging
- Orbital Angular Momentum in Optics
- Photorefractive and Nonlinear Optics
- Radio Frequency Integrated Circuit Design
- Coding theory and cryptography
- Error Correcting Code Techniques
- Neuroscience and Neural Engineering
- CCD and CMOS Imaging Sensors
- Image Processing and 3D Reconstruction
Beijing University of Posts and Telecommunications
2016-2025
China National Petroleum Corporation (China)
2025
University of Shanghai for Science and Technology
2023
State Key Laboratory of Information Photonics and Optical Communications
2016-2020
Taiyuan University of Technology
2016
State Key Laboratory on Integrated Optoelectronics
2016
National University of Defense Technology
2014
Peking University
2013
Georgia Institute of Technology
2013
Institute of Semiconductors
2010
What we believe to be a new scheme generate an optical millimeter wave with octupling of the local oscillator via nested LiNbO<sub>3</sub> Mach-Zehnder modulator (MZM) is proposed and implemented by numerical simulation. Since response frequency are largely reduced, bandwidth requirement transmitter electrical components reduced greatly. Then, parameters analyzed theoretically, find that both extinction ratio MZM phase imbalance between its two arms have influence on performance generated wave.
Shale oil reservoirs feature a considerable number of nanopores and complex minerals, the impact nano-pore confinement pore types frequently poses challenges to efficient development shale oil. For reservoirs, CO2 flooding can effectively lower crude viscosity, enhance reservoir physical properties, thereby increase recovery. In this paper, displacement process in nanoscale pores was simulated through molecular dynamic simulation method. The performance disparity quartz calcite slit...
Abstract An inverted T-shaped grating coupler with a bottom mirror is proposed and designed on the Si3N4-LNOI platform. The impact of structural parameters performance systematically analyzed discussed. Specifically, short column can adjust effective refractive index, while long influence reflection interaction coupled light. A particle swarm optimization (PSO) method employed to optimize structure, thereby enhancing peak coupling efficiency mode matching degree. Through apodization,...
X-ray fluorescence (XRF) spectroscopy is a non-destructive differential measurement technique widely utilized in elemental analysis. However, due to its inherent high non-linearity and noise issues, it challenging for XRF spectral analysis achieve levels of accuracy. In response these challenges, this paper proposes method that integrates an adaptive genetic algorithm with backpropagation neural network, enhanced by attention mechanism, termed as the AGA-BP-Attention method. By leveraging...
Abstract A low-loss broadband power splitter based on X-cut lithium niobate is proposed by utilizing the multimode interference coupler with a shallow-etched slot, wedge-shaped structure and SiO 2 cladding. The waveguide shallow-etch slot could reduce sensitivity of multi-mode region wavelength reach to high-quality imaging requirements. Results show that there an excess loss around 0.01 dB at operation 1550 nm, broad bandwidth ∼ 1314 nm large tolerance in shallow-etching. Additionally, our...
With the development of neuromorphic electronics, much effort has been devoted to expand perception, memory, and computing integration capabilities. In this paper, an ionic-based graphene synaptic transistor with long-gate structure investigated mimic learning function perceive humidity. By harnessing tunable in-plane-field transport charge carriers in ions motion ion-gel, mimics various functionalities, including inhibitory postsynaptic current, excitatory paired-pulse facilitation,...
By combining the good charge transport property of graphene and excellent photo-carrier generation characteristic perovskite nanocrystal, we propose demonstrate an ionic-gated synaptic transistor based on CsPbBr 3 /graphene heterojunction for bipolar photoresponse. Controlling potential barrier by ionic-gate electrical double-layer effect can promote separation photogenerated carriers effectively retard their recombination. Using ionic-gate-tunable Fermi level pinning photocurrent responses...
Underwater optical wireless communication, which is useful for oceanography, environmental monitoring, and underwater surveillance, suffers the limit of absorption attenuation Mie–Rayleigh scattering lights. Here, Bessel-like beams generated by a fiber microaxicon utilized propagation. Underwater, cone angle generating starts from 46°, smaller than that in air beams. When microaxicons about 140°, depth focus underwater, four times as long air, has enlarged 28 µm, 36.12 50.7 µm 470 nm, 520...
The wavelength-division multiplexing passive optical network (WDM-PON) is a potential technology to carry multiple services in an access network. However, it has the disadvantages of high cost and immature technique for users. A software-defined WDM/time-division PON was proposed meet requirements bandwidth, performance, services. reasonable effective uplink dynamic bandwidth allocation algorithm proposed. controller with wavelength slot assignment introduced, different management strategy...
In this paper, we propose an innovative channel-sensitive autoencoder (CSAE)-aided end-to-end deep learning (E2EDL) technique for joint geometric probabilistic shaping. The pretrained conditional generative adversarial network (CGAN) is introduced in the CSAE which performs differentiable substitution of optical fiber channel model under variable input power (IOP) levels. This enables CSAE-aided E2EDL to design optimal shaping schemes communication systems at varying IOPs. results proposed...
Highly efficient Cherenkov radiation (CR) is generated by the soliton self-frequency shift (SSFS) in irregular point of a hollow-core photonic crystal fiber (HC-PCF) our laboratory. The impacts pump power and wavelength on CR are investigated, corresponding nonlinear processes discussed. When average 120 fs pulse increases from 500 mW to 700 mW, Raman shifts 2210 nm 2360 nm, output 2.3 times, maximum ratio at 539 that residual calculated be 24.32:1, width optical spectrum visible broadens 35...
Using a photonic crystal fiber with zero dispersion wavelength of the fundamental mode at 780 nm designed and fabricated in our lab, ultraviolet mid-infrared continua are generated by cross-phase modulation between red-shift solitons blue-shift dispersive waves. The dependences continuum on pump power investigated. With working 820 nm, when increases from 300 to 500 mW, bandwidths change 80 140 100 200 respectively. is below 246 exceeds 2500 nm. Moreover, influences conversion efficiency...
We put forward and simulation demonstrated a multi-broadband radio over fiber (RoF) system based on Generalized Frequency Division Multiplexing (GFDM) by the using of Matlab software to call OptiSystem. The simultaneously transmits four GFDM signals modulated different carriers. Each signal is with bit rate 10Gbit/s bandwidth 2.5GHz carriers are frequency 10, 13, 16 19GHz respectively. results indicated that can transmit through 24-km Single Mode Fiber (SMF) EVM 2.6% when received optical...
IntroductionIn craniofacial surgery, magnetic navigation systems can effectively extend the doctor's limited visual range, improve their surgical precision, shorten operation time, and reduce incidence of complications. Owing to ease navigation, accuracy system is affected by various equipment in operating room. Therefore, its large-scale application lacking because requirement be extremely high during surgery. crucial. Various instruments have been evaluated interference with instruments....
Abstract Nowadays, the structure of passive optical networks is evolving, to keep network survivability, powering some elements in this kind a key issue. In work we propose recycling Raman pump remaining power at receiver be converted electrical power. With 24 dBm signal 8 dB on/off gain over 25 km single mode fiber was achieved. Also, generated 18.1 mW receiver. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:116–119, 2012; View article online wileyonlinelibrary.com. DOI...
A novel full-duplex LO-free 60-GHz radio-over-fiber (RoF) transmission system is proposed. Full-duplex error-free without optical/electrical LO required in either remote antenna units or mobile terminals successfully demonstrated for next generation wireless communications.