A5050620125- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Orbital Angular Momentum in Optics
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- Laser-Matter Interactions and Applications
- Quantum Information and Cryptography
- Solid State Laser Technologies
- Metamaterials and Metasurfaces Applications
- Quantum optics and atomic interactions
- Photonic and Optical Devices
- Nonlinear Photonic Systems
- Mechanical and Optical Resonators
- Plasmonic and Surface Plasmon Research
- Quantum Mechanics and Non-Hermitian Physics
- Magneto-Optical Properties and Applications
- Neural Networks and Reservoir Computing
- Optical Coherence Tomography Applications
- Optical Wireless Communication Technologies
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- Advanced Antenna and Metasurface Technologies
- Bee Products Chemical Analysis
- Multimedia Communication and Technology
- Antenna Design and Analysis
Hefei University of Technology
2021-2023
University of Science and Technology of China
2016-2020
Anhui University
2014
Chunghwa Telecom (Taiwan)
1998
The silicon-on-insulator waveguide is one of the most promising platforms for scalable quantum information processing. authors present multiplexed energy-time, time-bin, and polarization-entanglement photon sources from a single silicon nanowire on chip. These offer high brightness entanglement quality across more than 10 correlated channels, are fully compatible with dense-wave-division multiplexing (DWDM). They could be used key distribution, teleportation, swapping, many other...
Cylindrical vector beams (CVBs) have attracted immense recent attention for material processing and particle manipulation. High power output is the base of CVB lasers those applications. The traditional path to obtain high laser cooperation high-order mode (HOM) amplifier seed source, which a complex non-integrated system. This work proposed compact with an oscillator integrated into one fiber cavity. In cavity, fundamental resonant, HOM escapes in leaky mode. Tunable slope efficiency are...
We use the semianalytical Cartesian multipole method to investigate light transmission and reflection spectra of anisotropic dielectric metasurfaces, extend decompositions account for cross-polarization conversion effects. observe sharp high- <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mspace width="negativethinmathspace"/> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>Q</mml:mi> </mml:mrow> </mml:math> resonances arising from a distortion symmetry-protected...
We investigate the chiral spectral singularities, i.e., laser threshold modes, in PT-symmetric dielectric metasurfaces originating from quasi-bound states continuum. The poles, referred to as continuum, of scattering matrix can move upper complex frequency plane lower half-plane by increasing balanced gain and loss. maximal intrinsic optical chirality mode has been theoretically demonstrated via large transmission circular dichroism spectra. Our work paves way for studying enhanced...
Saturable absorber (SA) based harmonic mode-locking (HML) techniques at 2 µm waveband are much less reported than those 1.5 waveband, the maximum repetition rate of pulse generated by such is also lower waveband. In this paper, 39th with 908.6 MHz realized in a Bi2S3-based thulium-doped fiber laser. The fundamental mode-locked has central wavelength 1954.2 nm and 3-dB bandwidth 5.1 nm. 23.27 width 902 fs. characteristics material investigated. To best our knowledge, highest closest resonance...
Optical quantum states based on entangled photons are the key resource in quantum-information science. The realization of multiplexed multiple entanglement necessary for developing high-capacity information process. Silicon-on-insulator (SOI) has recently become a leading platform generating and processing non-classical optical states. In this work, by combining wavelength- time-division multiplexing technologies, we demonstrate time-bin photon pair source silicon nanowire waveguide...
The entire decaying dynamics of harmonic mode-locking (HML) are studied utilizing the dispersive Fourier transform (DFT) technique in a SESAM-based mode-locked fiber laser. It is unveiled that solitons do not disappear directly, but undergo transitional processes from higher-order HML to lower-order and then fundamental (FML), finally vanish. “big corner” can also exist process rather than just buildup HML, there at least one during between consecutive multi-pulsing states. energy...
An all-fiber laser using polarization-maintaining and ring-core fibers that are capable of automatically generating stable TE01 TM01 modes is proposed demonstrated experimentally. Two vector-mode coupling long-period fiber gratings (LPFGs) fabricated by a high-frequency CO2 used in the to realize efficient between HE11 mode TE01/TM01 mode. The polarization dependence LPFGs simulated coupled-mode theory verified experiments. A employed support propagation modes. By carefully aligning...
We propose and experimentally demonstrate an ytterbium-doped fiber laser emitting the single high-order cylindrical vector beams with a high efficiency modal purity based on adaptive gain control. By combination of pump self-designed ytterbium-ring doped fiber, dependent was tailored specific transverse mode can be selected in cavity. A model multimode propagation-rate equations is built up to behaviors competition laser. Modal are simulated numerically, which agree well our experiment...
We propose a Yb-doped fiber laser with an all-fiber beam shaper based on single-mode-graded-index multimode-few-mode (SMF-GIMF-FMF) structure. The excitation coefficients of the mode can be adjusted continuously by changing GIMF length. Numerical simulations are performed to investigate shaping dynamics in Through adding simple device geometry cavity, switchable output between fundamental transverse (LP01) and second-order (LP11) achieved. Cylindrical vector beams high purity also shown...
Silicon-on-chip photonic circuits are among some very promising platforms for generating nonclassical quantum state, because of its low loss, small footprint, and compatibility with complementary metal-oxide-semiconductor (CMOS) telecommunications techniques. Dense wavelength division multiplexing (DWDM) is a leading technique enhancing the transmission capacity both classical communications. To bridge frequency gap between silicon-chip other systems, such as memories, interface...
Manipulation of nonlinear processes orbital angular momentum (OAM) modes in optical fibers is an emerging challenge, providing the potential for a wide variety applications parametric amplification, high-dimensional entanglement generation, and frequency conversion. The authors demonstrate low-crosstalk intramodal four-wave mixing between OAM optical-vortex fiber. By engineering relative group velocity within spatial dimension, phase-matching conditions can be tailored. proposed scheme may...
We have developed a temporal coupled-mode theory based on quasi-normal modes to investigate the chiroptical effects in parity-time (PT) symmetric metasurfaces. The PT symmetry enforces different constraint for direct scattering matrix and coupling constants, which is verified by calculating transmission spectra originating from chiral quasi-bound states continuum. What's more, can be analytically continued complex frequency plane. find that zero pole singularities of coefficients play an...
In this letter, an all-fiber laser that can generate stable OAM modes with topological charges of ±1 is demonstrated. A ring-core fiber designed in-house used to reduce the crosstalk between mode and other modes. fiber-based long-period grating (LPFG) a Bragg (FBG) are employed select desired mode. The coupling ratio LPFG from HE11 exceeds 16 dB, purity as high 94.41%. This simple compact be integrated into multiplexing optical communication system.
The ultra-wideband supercontinuum generation (SCG) in a Te-based chalcogenide (ChG) photonic crystal fiber (PCF) is simulated the mid-infrared (MIR) waveband. PCF core and cladding materials are Ge20As20Se15Te45 Ge20As20Se17Te43, respectively. (SC) broadening affected by diameter absorption considered. selected PCFs at different pumping wavelengths can demonstrate of MIR according to results. We consider SC with without absorption. A range from 3 25 µm demonstrated simulation 8 pump...
A fiber-based beam shaper to adjust the distribution of spatial modes in a few-mode fiber (FMF) is theoretically and experimentally investigated this work. compact robust device, composed with single mode fiber-graded index multimode fiber-few (SMF-GIMF-FMF), fabricated by simply fusion splicing fibers. Switchable multi-wavelength comb are obtained combination Bragg grating (FM-FBG). This acts as filter select wavelength laser. switchable laser high purity extended among LP 01 , 11...
The nonlinear process of orbital angular momentum (OAM) beams in multimode fiber has attracted renewed interest due to its enhanced intermodal interactions. Here, we designed and simulated a novel photonic crystal (PCF) based on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi mathvariant="normal">A</mml:mi> mathvariant="normal">s</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msub> mathvariant="normal">S</mml:mi>...
We designed a cascaded all-soft-glass fiber structure and simulate midinfrared 2–20 µm ultrawideband supercontinuum (SC) generation numerically. The consists of 1.5 m InF 3 fiber, 0.2 chalcogenide photonic crystal tellurium-based fiber. Using 2 pulse pumping this structure, the generated SC covering wavelengths longer than 20 has been demonstrated theoretically. 30 dB bandwidth reaches 20.87 from 1.44 to 22.31 µm. effect different widths on is considered. With increase peak power decrease...