A5101615394- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Advanced Sensor and Energy Harvesting Materials
- Photonic and Optical Devices
- Advanced Chemical Sensor Technologies
- Dielectric materials and actuators
- Advanced Fiber Optic Sensors
- Ferroelectric and Piezoelectric Materials
- Photonic Crystals and Applications
- Conducting polymers and applications
- Aluminum Alloys Composites Properties
- ZnO doping and properties
- Microfluidic and Capillary Electrophoresis Applications
- Acoustic Wave Resonator Technologies
- Electronic and Structural Properties of Oxides
- Integrated Energy Systems Optimization
- Advanced Decision-Making Techniques
- Transition Metal Oxide Nanomaterials
- Petroleum Processing and Analysis
- Advanced Memory and Neural Computing
- Lignin and Wood Chemistry
- Electrochemical Analysis and Applications
Southwest Jiaotong University
2016-2021
Nanjing University
2017-2021
Huazhong University of Science and Technology
2011-2021
Tianjin University
2013-2020
Collaborative Innovation Center of Chemical Science and Engineering Tianjin
2020
Central South University
2019
Xi'an Technological University
2011-2018
Qingdao University
2018
Collaborative Innovation Center of Advanced Microstructures
2017
State Key Laboratory of Materials Processing and Die & Mould Technology
2016
A photonic method used to simultaneously measure the Doppler-frequency-shift (DFS) and angle-of-arrival (AOA) of microwave signals is proposed experimentally demonstrated. At remote antenna unit (RAU), local oscillator (LO) signal two echo are applied a phase modulator (PM) polarization-division-multiplexed Mach-Zehnder (PDM-MZM), respectively. After transmission over fiber link, DFS AOA parameters can be obtained by processing low-frequency electrical at central office (CO). Experimental...
In poly(vinylidene fluoride–trifluoroethylene) copolymer spin cast films, it has been observed that the polarization switching time increases as film thickness is reduced to below 1 μm. We will show this change with can be divided into two regimes, i.e., those above 120–150 nm and thickness. For films thicker than nm, in behavior due interface effects modeled by an effective layer lower dielectric constant series film. thickness, there additional very large increase of This effect caused...
A photonic method to estimate the angle-of-arrival (AOA) of microwave signals based on optical phase scanning is proposed and experimentally demonstrated. At remote antenna unit (RAU), one received high-frequency signal directly applied a modulator (PM), another coupled with low-frequency large-voltage sawtooth-wave PM. The used scan sideband from 0 2π. After transmission over segment fiber link, AOA parameter can be estimated by processing obtained electrical at central office (CO). Such...
In metal/insulator/metal sandwich structure, the interface between metal and insulator thin films plays significant roles in functional performance of films. ferroelectric poly(vinylidene fluoride-trifluoroethylene) copylmer metallized by different metals, it is found that polarization switching asymmetric due to work function difference electrodes, degree asymmetry increases with increasing difference. For samples high metals as both or at least one much faster. The current–voltage curves...
Frequency modulated continuous-wave (FMCW) radar systems suffer from permanent leakage the transmitted signal into receiver, which will reduce dynamic range of system and degrade receiver sensitivity. Herein, a photonic-assisted cancellation method for wideband FMCW transceiver is proposed experimentally demonstrated. At remote antenna unit (RAU), local oscillator (LO) signal, are converted to optical signals with orthogonally polarization states by using polarization-division-multiplexed...
In this paper, an integrated polarization-insensitive optical comb filter with flat passband and tunable central wavelength is designed based on cascaded Mach-Zehnder structure. It realized by employing three specific directional couplers square waveguides. The of the proposed for both TE TM modes can be equally shifted. Simulation results show that has a 3-dB bandwidth 2.8 nm, free spectral range 6.09 minimum insertion loss 0.315 0.325 dB mode, respectively. Moreover, polarization-dependent...
A photonic scheme to generate a 4-level frequency hopping (FH) microwave signal is proposed and experimentally demonstrated. The of the generated can be fast flexibly switched by shifting combinations two binary signals (i.e., 00, 01, 11, 10). Moreover, carrier frequencies tuned in large range. In experiments, 2/4/6/12, 4/6/8/12, 6/9/12/18 GHz FH are with speed up gigahertz.
A novel scheme of microwave photonic generation binary digitally modulated signals is proposed and experimentally demonstrated, which can simultaneously generate 2ASK, 2PSK 2FSK. By dynamically manipulating an optical frequency comb, different modulation formats be switched. Moreover, the bit rate carrier generated RF tuned.
Polarization-beam-splitters with both broadband operation window and high extinction ratio are highly desirable in optical communication systems. In this paper, a compact noncascaded-directional-couplers PBS an ultrahigh low excess loss is proposed. The utilizes asymmetrical directional coupling structure consisted of TE-pass-polarizer waveguide TE- TM-pass waveguide. simulation results show that the up to 35.41 dB only 0.11 around central wavelength 1550 nm for polarizations (TE TM)....
The minimization of polarization multiplexing angle in a polarization-division-multiplexed (PDM) transmission system is explored. An effective demultiplexing algorithm based on Stokes space proposed to realize the two nonorthogonal states. Both simulation and experimental results verify effectiveness for 56-Gb/s PDM-dual phase-shift keying (DPSK) signal over different angles (i.e., θ 1/4 23°, 45°, 67°, 90°) lengths links back-to-back, 320 km, 400 km).
Polarization is one of the key parameters to be utilized for large capacity and high spectral-efficient optical communication systems, especially widely deployed polarization-division-multiplexing (PDM) scheme. To break limitation only two orthogonal polarization states that could used carrying data signals over same wavelength, we experimentally demonstrate first transmission three-polarization-division-multiplexed DPSK at a rate up 3×25 Gb/s 300-km fiber link by using single-carrier.