A5029518193- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Quantum optics and atomic interactions
- Optical Network Technologies
- Mechanical and Optical Resonators
- Magneto-Optical Properties and Applications
- 2D Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- MXene and MAX Phase Materials
- Advanced Memory and Neural Computing
- Transition Metal Oxide Nanomaterials
- Graphene research and applications
- Advanced Optical Sensing Technologies
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- CCD and CMOS Imaging Sensors
- Analytical Chemistry and Sensors
- Topological Materials and Phenomena
- Cultural Heritage Materials Analysis
- Solid State Laser Technologies
- Indoor and Outdoor Localization Technologies
- GaN-based semiconductor devices and materials
Minzu University of China
2019-2024
Shandong University
2023
University of Chinese Academy of Sciences
2016-2020
Complexe de Recherche Interprofessionnel en Aérothermochimie
2013-2019
Normandie Université
2019
Centre National de la Recherche Scientifique
2013-2019
Carnegie Mellon University
2019
Hubei University for Nationalities
2016-2019
Hubei University
2015-2019
Institut National des Sciences Appliquées Rouen Normandie
2019
Abstract In the era of Metaverse and virtual reality (VR)/augmented (AR), capturing finger motion force interactions is crucial for immersive human-machine interfaces. This study introduces a flexible electronic skin index finger, addressing coupled perception both state process in dynamic tactile sensing. The device integrates resistive giant magnetoelastic sensors, enabling detection surface pressure joint bending. e-skin identifies three phases action: bending state, normal tangential...
A porous hierarchical In2O3 micro-/nanostructure was prepared by oxidizing In2S3 precursors for gas sensor applications. The formation mechanism of the structure investigated systemically means simultaneous thermogravimetry and differential thermal analysis, conventional X-ray diffraction, energy-dispersive XRD cooperated with field-emission scanning electronic microscopy observations. In gas-sensing measurements noxious volatile organic compounds as target gases, based on...
We report superluminal propagation in optical fibers using Brillouin lasing oscillation a ring cavity. Negative group velocity through 10-m single mode fiber has been experimentally demonstrated. An advancement of 221.2 ns was observed before the input signal, which achieved with very high slope efficiency $211.3\text{ }\text{ }\mathrm{ns}/\mathrm{dB}$. This indicates that this way is suitable for long-distance low-loss via fibers. Correspondingly, $\ensuremath{-}0.151c$ and index...
We proposed and experimentally demonstrated an extremely simple feasible slow-light technique to achieve tunable optical delay by using the Er/Yb codoped fiber Bragg grating (FBG). The signal light experiences strong dispersion when it is launched into reflection edge of FBG, group value determined wavelength pump power. In experiment, a controllable 0.9 ns can be obtained through changing 980 nm velocity slowed down 5.6x10(7) m/s, which 19% speed in free space. It provides very approach...
We report a novel saturable absorber (SA) based on anhydrous alcohol for mode-locked fiber lasers (MLFLs). The SA is an optical ferrule with one alcoholic end-facet sealed by polyethylene (PE) film. Its modulation depth measured to be 5.9%. Also, self-starting MLFL using such alcohol-SA has been demonstrated generate 972-fs pulses at 1594.6 nm. single pulse energy up 1.8 nJ the repetition rate of 20.97 MHz, and signal-to-noise ratio (SNR) higher than 50 dB. exhibits...
Using atomic bromine and 2,6-diphenylanthracene (DPA), we successfully constructed characterized the large-area 2D chiral networks on Ag(111) Cu(111) surfaces by combining molecular beam epitaxy with scanning tunneling microscopy. The Br atoms distribute themselves periodically in network maximum number of −C–H···Br hydrogen bonds. Density functional theory calculations demonstrate that bonds contribute to stability Br-organic networks. In addition, controlling ratio DPA molecules, different...
We propose and experimentally demonstrate the propagation of slow/fast light in an erbium-doped fiber (EDF) using mutually modulated cross-gain modulation. The group velocity signal can be manipulated by effect gain cross-saturation modulation a saturating at arbitrary wavelength bandwidth EDF. ultraslow with small 5.6 × 10⁻³c (c is speed free space) superluminal negative -1.1 has been observed under different phases.
We propose and demonstrate the generation of 1.6 μm similaritons in all-fiber lasers with two segments different Er-doped fibers (EDFs), which can optimize gain profile dispersion cavity. The fiber laser is mode-locked by nonlinear polarization rotation technology. optimized EDF lengths force operated at μm, managed cavity responsible for similariton pulse generation. delivers chirped pulses duration 2.4 ps. be dechirped to 57.6 fs using standard single-mode outside output power 47 mW...
Transitions between different types of pulse solutions the Ginzburg-Landau equation (GLE) have been studied experimentally in a mode-locked fiber laser. It is demonstrated that pulses corresponding to GLE can be generated single Dispersion-managed solitons, dissipative and similaritons emitted depending on parameters such as intensity, linear cavity phase-delay bias, birefringence effect cavity. The three nonlinear waves show features, especially spectral shapes dynamics accompanying pump...
We report on a passively mode-locked neodymium-doped oscillator featuring W-type fiber operating at 930 nm. Two different laser configurations with and without dispersion management are investigated to generate high-energy similaritons. Chirped pulses 2.2 nJ energy that can be compressed 126 fs generated in the dispersion-managed cavity. The ANDI-fiber delivers parabolic 5.2 ps duration 146 fs.
We present an L-band dissipative soliton (DS) fiber laser, which can deliver 87.5 fs pulses at 1.6 μm band. Numerical simulations are used to confirm the DS generation, and prove pivotal component of invisible filter with proper bandwidth in formation pulses. Such a robust, compact ultrafast laser source higher pulse energy is hence excellent seed for amplifiers. The mechanism revealed helpful develop unified theory understanding various mode-locking regimes normal dispersion lasers.
Phase sensitive optical time domain reflectometry (Φ-OTDR) has been widely used in the precise acquisition of vibration signal along sensing fiber, and attracted more interest. However, polarization fading coherent usually lead to phase hopping recovered signal, thus it is difficult realize continuous measurement vibration, especially low frequency vibration. The diversity multi-frequency detection schemes which are solve above problems need additional hardware, increasing cost complexity...
A passively Q-switched Er-doped fiber laser using a simple and cost-effective saturable absorber (SA) of alcohol has been demonstrated. The SA is made through filling anhydrous in the gap between end-facets two optical patch cords, which are inserted into cannula. modulation depth with 820-μm layer measured to be 18%. Based on such an SA, Q-switching operation achieved. average output power 30.3 mW pulse repetition rate 81.9 kHz, thus, energy up 348.6 nJ. To best our knowledge, it first...
A kind of photonic crystal magnetic field sensor is proposed and investigated numerically. The shoulder-coupled resonant cavity introduced in the crystal, which infiltrated with fluid. Through monitoring shift wavelength, sensing realized. According to designed infiltration schemes, both sensitivity full width at half maximum increase number air holes. figure merit structure defined evaluate performance comprehensively. best corresponding optimal scheme eight holes fluid obtained.
Phase-sensitive optical time domain reflectometry <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Phi$</tex-math> </inline-formula> -OTDR has been widely used in vibration sensing applications due to its high sensitivity and distributed capability. However, the real behavior is hard be distinguished from ambient interferences by conventional Φ-OTDR, since responses simultaneous behaviors are nonlinearly...
We experimentally demonstrate an all-fiber ultrashort pulse amplification and compression system seeded by similaritons at erbium-doped wavelength band. By optimizing the compressor, our can generate 4.1 nJ, 75.6 fs pedestal-free pulses with 54 kW peak power. The corresponding spectrum width is 51 nm has no spectral spikes. Such high-quality benefit from linear chirp of similaritons. Furthermore, we variation similariton compressed duration to amplifier gain, which consistent theoretical study.
We have demonstrated the direct generation of 4.6-nJ 78.9-fs ultrashort pulses with 58 kW peak power in an all-fiber net-normal-dispersion oscillator. Such high is a record oscillator and comparable to chirped-pulse amplification systems. The corresponding spectrum has steep spectral edges, which typical shape dissipative solitons (DS). Also, we find that width tunable from 40 nm by adjusting polarization controllers, pulse duration can be tuned 1.7 ps 120 fs through increasing pump power,...
In this paper, an optical flow based step length estimation algorithm for indoor pedestrian navigation is proposed. To address the challenge of interferences arising from hands shaking during walking, pose a smartphone computed by attitude and heading reference system (AHRS) used to improve performance algorithm. Moreover, motion information pedestrians can be captured calculating alteration relevance between sequential pixels frames camera snapshots when steps are detected. Accordingly,...
Two-dimensional (2D) materials are playing more and important roles in both basic sciences industrial applications. For 2D materials, strain could tune the properties enlarge Since growth of on substrates is often accompanied by strain, interaction between worthy careful attention. Here we demonstrate fabrication strained monolayer silver arsenide (AgAs) Ag(111) molecular beam epitaxy, which shows one-dimensional stripe structures arising from uniaxial strain. The atomic geometric structure...