A5054902852- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Solid State Laser Technologies
- Organic Light-Emitting Diodes Research
- Luminescence Properties of Advanced Materials
- Lanthanide and Transition Metal Complexes
- Advanced Photonic Communication Systems
- Glass properties and applications
- Mechanical and Optical Resonators
- Molecular Junctions and Nanostructures
- Metal-Organic Frameworks: Synthesis and Applications
- Electromagnetic Compatibility and Noise Suppression
- Photochemistry and Electron Transfer Studies
- Quantum optics and atomic interactions
- Cardiovascular Health and Disease Prevention
- Optical Network Technologies
- GaN-based semiconductor devices and materials
- Cardiovascular Disease and Adiposity
- Geophysical Methods and Applications
- PAPR reduction in OFDM
- Advanced Nanomaterials in Catalysis
- Power Line Communications and Noise
- Advanced MEMS and NEMS Technologies
Beijing Jiaotong University
2013-2024
Xiamen University of Technology
2015-2024
Xiamen University
2014-2024
Nanjing University of Science and Technology
2023
Southwest University
2009-2021
China General Nuclear Power Corporation (China)
2020
Collaborative Innovation Center of Chemistry for Energy Materials
2016-2019
Huazhong University of Science and Technology
2018
Union Hospital
2018
State Nuclear Power Technology Company (China)
2017
Abstract To guide the choice of future synthetic targets for single‐molecule electronics, qualitative design rules are needed, which describe effect modifying chemical structure. Here heteroatom substitution on destructive quantum interference (QI) in junctions is, first time experimentally addressed by investigating conductance change when a “parent” meta‐phenylene ethylene‐type oligomer (m‐OPE) is modified to yield “daughter” inserting one nitrogen atom into m‐OPE core. We find that if...
Nanosized metal-organic frameworks (MOFs) NH2-MIL-53(Al) were synthesized from 2-aminoterephthalic acid (NH2·H2BDC) and AlCl3 by a facile hydrothermal method. The MOFs displayed good stability uniform particle size in netural medium hydrolyzed alkaline to release large amount of fluorescent ligand NH2·H2BDC. Therefore, they can act as large-capability nanovehicles load signal molecules for investigating various biorecognition events. In this work, based on the hydrolysis behavior...
Abstract Full-carbon electronics at the scale of several angstroms is an expeimental challenge, which could be overcome by exploiting versatility carbon allotropes. Here, we investigate charge transport through graphene/single-fullerene/graphene hybrid junctions using a single-molecule manipulation technique. Such sub-nanoscale electronic can tuned band gap engineering as exemplified various pristine fullerenes such C 60 , 70 76 and 90 . In addition, demonstrate further control breaking...
Based on the intramolecular energy transfer mechanism between organic ligand TMHD (2, 2, 6, 6-tetramethyl-3, 5-heptanedione) and central Er3+ ions, optical gains at 1.55 µm were demonstrated in three structures of polymer waveguides using complex Er(TMHD)3-doped polymethylmethacrylate (PMMA) as active material. With excitation two low-power UV light-emitting diodes (LEDs) instead 980 or 1480 nm lasers, relative 3.5 4.1 dB cm-1 achieved a 1-cm-long rectangular waveguide with an core PMMA...
In this paper, a highly sensitive fiber Bragg grating (FBG) interrogation system based on dual-loop optoelectronic oscillator (OEO) with the enhanced Vernier effect has been proposed and experimentally demonstrated. Light reflected from FBG sensor is used as optical source of OEO. By introducing dispersion in OEO loop, information encoded wavelength can be interrogated by detecting frequency microwave signal generated loop. The dispersive media two paths, one path formed roll compensation...
Based on the molecular energy transfer mechanism, relative gains at 1067 and 637 nm wavelengths are achieved in thermally activated delayed fluorescence molecule AQ(PhDPA)2 Nd complex with chelating phosphine oxide as ligands codoped polymer waveguides, excitation of low-power UV light-emitting diodes (LEDs) instead traditional semiconductor lasers pump sources. For -Nd(DBTTA)3 (DBFDPO) (DBTTA = dibenzotetrathienoacene, DBFDPO 4,6-bis (diphenylphosphoryl) dibenzofuran) -codoped...
Abstract 9,9‐bis (diphenylphosphorylphenyl) fluorene (FDPO) and dibenzotetrathienoacene (DBTTA), are synthesized as the neutral anionic ligands, respectively, to prepare Er III coordination polymer [Er(DBTTA) 3 (FDPO)] n . Based on intramolecular energy transfer, optical gains at 1.5 µm demonstrated in ‐doped waveguides under excitations of low‐power light‐emitting diodes (LEDs) instead laser pumping. A ligand‐sensitization scheme between organic ligands 3+ ions an excitation ultraviolet...
A solution-processable erbium-ytterbium codoped complex is synthesized. The absorption and photoluminescence spectra of the are observed. full width at half maximum emission spectrum 80 nm around 1530 nm. structure embedded waveguide with as core layer designed. With an input signal power 0.3 mW, optical gain 5.2 dB a wavelength 1550 obtained in 15-mm-long when cladding SU-8. When polymethyl methacrylate, 6.5 12-mm-long 1 mW.
The services foreseen for 5G networks will demand a vast number of challenging requirements to be fulfilled by the physical layer. These can grouped into application scenarios, each one with key requirement addressed network. A flexible waveform associated appropriate data frame is an essential feature in order guarantee support contrasting from different scenarios such as Enhanced Mobile Broadband, Internet Things, Tactile and Access Remote Areas. In this paper, we propose based on...
Abstract To guide the choice of future synthetic targets for single‐molecule electronics, qualitative design rules are needed, which describe effect modifying chemical structure. Here heteroatom substitution on destructive quantum interference (QI) in junctions is, first time experimentally addressed by investigating conductance change when a “parent” meta‐phenylene ethylene‐type oligomer (m‐OPE) is modified to yield “daughter” inserting one nitrogen atom into m‐OPE core. We find that if...
Chelate phosphine oxide ligand (9,9-dimethyl-9H-xanthene-4,5-diyl) bis (diphenylphosphineoxide) (XPO) is prepared as a neutral to synthesize complex Nd (TTA)3 (TTA = 2-thenoyltrifluoroacetone). An appropriate energy gap between the XPO and TTA ligands, which can support two additional transfer routines from first excited triplet state (T1 ) level of that TTA, improves in complex. Based on intramolecular mechanism, optical gains at 1.06 1.31 µm are demonstrated (XPO)-doped polymer waveguides...
Abstract Relying on a reverse energy transfer mechanism between erbium (Er 3+ ) and ytterbium (Yb ions, optical gains at wavelengths of 1550, 980, 1067 nm are achieved in NaYF 4 : Er , Yb nanoparticles‐doped polymer waveguides under excitation low‐power light‐emitting diodes (LEDs) instead 976 or 1480 semiconductor laser as pump sources. The demonstrated five waveguide structures: active‐rectangular, evanescent‐field with without an aluminium (Al) reflector, dual‐active hybrid Al reflector....
Near-infrared luminescent rare-earth organic complexes have attracted intensive attention in the field of optical waveguide amplification. However, their gains were commonly less than 4 dB/cm due to limited doping concentrations. Herein, two one-dimensional (1D) Nd
A continuous liquid level sensor (LLS) based on an in-fiber Michelson interferometer is proposed and experimentally demonstrated. The formed by a single long period grating (LPG) together with reflective mirror at the end of fiber. portion between LPG immersed in to be measured as LLS sensing probe, can monitoring wavelength interference fringes interferometer. experimental results show that has good linearity sensitivity.
The relative optical gains at three near infrared wavelengths (1550 nm, 1064 and 980 nm) were achieved in NaYF4: Er3+, Yb3+ nanoparticle-doped SU-8 waveguides when using two low-cost light-emitting diodes (LEDs) instead of traditional nm semiconductor laser as pump source. polymer fabricated by one-step photolithography process. fluorescence bands around 1550 1000 due to the 4I13/2 → 4I15/2 transition Er3+ ions 2F5/2 2F7/2 observed under excitation 405 520 LEDs. By vertical top pumping mode...
An optical waveguide amplifier, which can solve the problem of attenuation in network transmission, is key technology to chip integration and interconnection. Here, best our knowledge, we propose a novel polymer/silica hybrid amplifier at 532 nm for first time. The research great significance improvement short distance communication visible light system. was designed as an embedded structure based on NaYF4:Er3+Yb3+ nanocrystals, were synthesized by high-temperature thermal decomposition....
Abstract Optical gains at 637 nm wavelength using light‐emitting diodes (LEDs) instead of traditional semiconductor lasers as pumping sources are demonstrated in the organic molecule 2,6‐bis[4‐(diphenylamino)phenyl]‐9,10‐anthracenedione (AQ(PhDPA) 2 )‐doped polymethylmethacrylate (PMMA) and SU‐8 polymer waveguides. Under excitation four blue‐violet LEDs with different central wavelengths, fluorescence red band is observed owing to transition AQ(PhDPA) from excited states ground state based...
Rotation sensitivity of optical gyroscopes with ring resonators and two input/output waveguides in a coplanar add-drop filter configuration is studied. First, the gyroscope single resonator analyzed, which shown to have slightly higher than one waveguide. Next, sensor identical coupled through investigated, turns out half when compared for same footprints. The last point valid coupling coefficients resonators.
A low-complexity algorithm for calculation of LMMSE filter coefficients Generalized Frequency Division Multiplexing (GFDM) in a fading multipath environment is derived. The simplification based on the block circularity involved matrices. proposal reduces complexity from cubic to squared order. proposed approach can be generalized other waveforms with circular pulse shaping.
A new type of optical filter based on mechanical tuning and a microring resonator is proposed. The proposed expected to consume much less standing power compared the conventional thermo-optic carrier-injection tunable filters. In this work, two methods are used prove concept device: (1) analytical method (2) finite-difference time-domain method. dependence characteristics some device parameters studied as well.
Nd(TTA) <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (TPPO) xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> complex (HTTA: 2-thenoyltrifluoroacetone, TPPO: triphenylphosphine oxide) doped SU-8 polymer waveguide amplifiers were demonstrated. The absorption and photoluminescence spectra observed on a 100-μm-thick film of the polymer. Under excitation at 808 nm, fluorescence was obtained 904 1068 1346 nm wavelengths. full-width...
A 980 nm semiconductor laser is always selected as the pump source for erbium-ytterbium co-doped optical waveguide amplifiers. In this work, two low-cost blue-violet LEDs, rather than an expensive laser, were used to Er 3+ -Yb phosphate planar waveguide. When signal power was 0.4 mW at a 1550 wavelength, internal gains of about 4.1 and 4.5 dB/cm respectively obtained under excitations 32 mW/cm 2 , 275 LED 914 405 LED. It found that 51.17% total ions in H 9/2 state contributed luminescence...