A5102748014- Orbital Angular Momentum in Optics
- Metamaterials and Metasurfaces Applications
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Plasmonic and Surface Plasmon Research
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Advanced Antenna and Metasurface Technologies
- Thermal Radiation and Cooling Technologies
- Nonlinear Photonic Systems
- Antenna Design and Optimization
- Electromagnetic Scattering and Analysis
- Analytical Chemistry and Sensors
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Advanced Fiber Optic Sensors
Southern University of Science and Technology
2024
South China Normal University
2018-2022
The electromagnetically induced transparency (EIT) effect realized in a metasurface is potential for slow light applications its extreme dispersion variation the window. Herein, we propose an all-dielectric to generate double resonance-trapped quasi bound states continuum (BICs) form of EIT or Fano resonance through selectively exciting guiding modes with grating. group delay effectively improved up 2113 ps attributing ultrahigh Q-factor carried by quasi-BIC. coupled harmonic oscillator...
We propose a photonic crystal fiber with high refractive index ring, which supports up to 180 orbital angular momentum (OAM) modes without any order radial from 1.5 um 1.7 um. The finite element method is employed numerically study the properties of designed fiber. Further research shows that differences all eigenmodes are above 2 ×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> - 3</sup> , indicates corresponding can be well-separated and...
Optical metasurfaces, which consist of subwavelength scale meta-atoms, represent a novel platform to manipulate the polarization and phase light. The optical performance metasurfaces heavily relies on quality nanofabrication. Retrieving Jones matrix an imperfect metasurface element is highly desirable. We show that this can be realized by decomposing generalized meta-atom into two parallel ones, correspond ideal retardation. To experimentally verify concept, we designed fabricated...
In this paper, we propose a metamaterial structure for realizing the electromagnetically induced transparency effect in MIR region, which consists of gold split-ring and graphene split-ring. The simulated results indicate that single tunable window can be realized due to hybridization between two rings. tuned individually by coupling distance and/or Fermi level via electrostatic gating. These could find significant applications nanoscale light control functional devices operating such as...
In this paper, we investigated the geometric parametric instability (GPI) in graded-index multimode fibers through generalized nonlinear Schrödinger equation. Our results clearly and intuitively indicate that generations of GPI sidebands are nearly synchronous spectrums all modes, shapes these same. The numerical show energies come from pump sideband, carried by similar spatial beam profiles due to modal components. We also found large dispersion has an influence for symmetry sidebands.
In this paper, we numerically and theoretically study the tunable plasmonically induced transparency (PIT) effect based on graphene metasurface structure consisting of a cut wire (CW) resonator double split-ring resonators (SRRs) in middle infrared region (MIR). Both theoretical calculations according to coupled harmonic oscillator model simulation results indicate that realization PIT significantly depends coupling distance strength between CW SRRs. addition, geometrical parameters number...
We report the generation of vortex soliton molecules (VSMs) in a passively mode-locked fiber laser based on mode selective coupler (MSC). ±1-order VSMs with variable numbers are observed. By adjusting polarization state light cavity, we further demonstrate process which one VSM splits to multiple. During this process, number solitons inside also varies and their separation gradually increases while spectral modulation being unobservable, vice versa. The obtained results have potential...
Abstract We propose an all-dielectric hybrid structure combined with hexagonal boron nitride slab and strontium titanate (STO) metasurfaces to excite dual hyperbolic phonon polaritons (HPhPs) additional optical (TO) phonon, achieve their strong coupling photons. The metasurfaces, supporting tunable guided-mode resonance via adjusting the external temperature, consists of STO two-dimensional grating layer. Thus, can be switched tuned actively between HPhPs TO temperature metasurfaces. This...
We propose a temporal manipulation scheme for the inner-mode interactions in graded-index multimode fibers (GRIN-MMF). In this scheme, so-called Pearcey-Gaussian (PeG) wave packet is constructed pulse profile, which allows of self-compressing control by second- and third-order dispersions. Our simulations show that such linear compressing cooperates with nonlinear Kerr effect when wavelength close to zero-dispersion point fiber, enables energy transfer from higher modes fundamental one. Such...
We report the generation of vortex soliton molecule (VSM) and cylindrical vector in a fiber laser based on mode selective coupler. ±1-order VSM, radially azimuthally polarized molecules are realized.