A5100662166- Orbital Angular Momentum in Optics
- Atomic and Subatomic Physics Research
- Photonic Crystal and Fiber Optics
- Advanced Frequency and Time Standards
- Quantum optics and atomic interactions
- Software-Defined Networks and 5G
- AI and Multimedia in Education
- Digital Media and Visual Art
- Optical Network Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Nonlinear Dynamics and Pattern Formation
- Electromagnetic Launch and Propulsion Technology
- S100 Proteins and Annexins
- Educational Technology and Pedagogy
- Advanced Fiber Optic Sensors
- Magneto-Optical Properties and Applications
- Advanced Fiber Laser Technologies
- Infrastructure Maintenance and Monitoring
- Silicon Carbide Semiconductor Technologies
- Teaching and Learning Programming
- Optical Coherence Tomography Applications
- Caching and Content Delivery
- Network Security and Intrusion Detection
- Mechatronics Education and Applications
- Power Systems and Renewable Energy
Alibaba Group (China)
2024
Shanghai University
2021-2023
Alibaba Group (United States)
2022
Shanxi Cardiovascular Hospital
2020
Beijing Zhenxing Metrology & Measurement Institute
2020
Beijing Institute of Radio Metrology and Measurement
2020
Weatherford College
2020
Hunan University of Science and Engineering
2018
Institute of Electrical and Electronics Engineers
2013
Southeast University
2013
A Faraday anomalous dispersion optical filter (FADOF) with a single transmission peak is achieved by using buffer-gas (argon, 2 Torr)-filled rubidium cell. At room temperature, the 0.2% and bandwidth of 0.65 GHz. temperature 63° C, rises to maximum 30.6%, 1.41 This FADOF may replace use interference filters or virtually imaged phased arrays in imaging modalities.
An all-fiber fiber coupler was demonstrated for pumping orbital angular momentum (OAM) modes amplification, which fabricated by side-polishing and bonding a ring-core erbium-doped (RC-EDF) pre-tapered side-polished single-mode (SMF). With the selected phase-matching condition at 976 nm, laser coupled into RC-EDF from SMF with optimized high efficiency, whereas 1st to 3rd-order OAM mode signals were transmitted low insertion loss in over broadband wavelength range 1530 1565 nm. This division...
We present Zoonet, a proactive virtual network telemetry system for multi-tenant clouds. The requirements are to (1) cover hyper-scale networks with millions of tenants and VMs top tenants; (2) handle frequent topology changes due tenants' configuration through flexible APIs; (3) adapt heterogeneous middleboxes along the probing paths; (4) achieve VM-to-VM without breaking tenant privacy; (5) differentiate physical problems. argue existing solutions fail satisfy our needs either incomplete...
Orbital angular momentum (OAM) mode division multiplexing (MDM) amplification in a seven-ring-core erbium-doped fiber (7-RC-EDF) has been experimentally demonstrated, which the 1 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">st</sup> -4 xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> order OAM modes within each core of 7-RC-EDF can be supported. By combining with pump laser into 7-RC-EDF, 112 are predicted to amplified C-band net gain more...
Patients with acute coronary syndrome (ACS) have an increased serum level of calprotectin. The purpose present study was to analyze the prognostic significance calprotectin levels in elderly diabetic patients underwent percutaneous intervention (PCI) due ACS.A total 273 consecutive PCI for primary ACS were enrolled. Serum measured before PCI, and baseline clinical characteristics all collected. All followed up at regular interval major adverse cardiovascular events (MACEs) during 1 year...
At present, public clouds have served millions of tenants. To provide reliable services, cloud vendors need to perceive health status the network by building a telemetry system detect possible failures. While systems for physical networks been extensively studied, research on virtual is still insufficient. Different from networks, we conclude that faces new challenges feasibility, efficiency, and effectiveness. Specifically, 1) protect privacy tenants adapt heterogeneous middleboxes at data...
We demonstrated that a ring-core erbium-doped fiber amplifier (RC-EDFA) can support orbital angular momentum (OAM) modes with topological charges (|l| = 1~3). The dependence of the characteristics on length RC-EDF was investigated experimentally, including an investigation gain and 3 dB bandwidth over whole C band (i.e., 1530~1565 nm). improved to 21 nm. At signal wavelength 1550 nm, maximum all up 30.1 dB. Differential modal maintained below approximately 1.3
An excited-state Faraday anomalous dispersion optical filter (FADOF) has been demonstrated, which utilizes a rubidium electrodeless-discharge-vapor-lamp rather than an external pump laser. When the lamp is turned off, lamp-based can be treated as ground-state FADOF. The compact based FADOF holds promise for realing frequency-fixed diode laser systems (such 1529 nm communication application) and multi-frequency filters.
Optical clocks have become a very important tool of investigating the characteristics atoms or ions, for state-of-art instability and uncertainty. Increasing running time an optical atomic clock is one critical issue that scientists are still working on. In this paper we report improvement chamber calcium beam clock. By using combination microtubes as nozzle, achieved high flux with small divergence. The resonant about 1×10<sup>12</sup> to 10<sup>13</sup> per second divergence smaller than...
In this paper, a transformer with small size and relatively insensitive to distributing parameter is present. Two types of four different high-voltage pulse transformers used in the igniter circuit HID ballast are examined. This comparison concludes that smallest using R core optimal. Experiment results validate conclusion
Through the laser cooling technique, temperature of cold atom or ion reaches nK level. With advantage highly controllable property, systems have been widely applied to quantum precision measurement, atomic spectroscopy, computer, simulation. It is vital analyze system exactly. By introducing a Bethe-type wavefunction, we investigate two-body fermion interacted by synthetic gauge field and contact interaction in ring trap. The exact energy spectrum has given, which show lower eigenenergy...
Abstract We use mathematical modeling methods to incorporate new elements into the computer graphics technology and visual communication design process. This method realizes of a image system. uses artificial vision model extracts local features. The micro-partial equation obtains background reference line target point in sequence complete suppression spatio-temporal domain. experimental results show that proposed algorithm has better tracking effect subsequent frames video images higher efficiency.
A side-polished fiber coupler for orbital angular momentum (OAM) mode conversion was designed and fabricated with a single (SMF) ring-core (RCF). Based on evanescent wave coupling effect, the 974 nm pump laser in SMF can be efficiently injected into RCF. It found potential applications OAM amplifiers.