Qiang Liu

ORCID: 0000-0002-6957-4796
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Research Areas
  • Advanced Fiber Optic Sensors
  • Photonic and Optical Devices
  • Photonic Crystal and Fiber Optics
  • Plasmonic and Surface Plasmon Research
  • Optical Network Technologies
  • Orbital Angular Momentum in Optics
  • Advanced Fiber Laser Technologies
  • Photonic Crystals and Applications
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Color Science and Applications
  • Advanced Photonic Communication Systems
  • Spectroscopy and Laser Applications
  • Optical Coatings and Gratings
  • Solid State Laser Technologies
  • Terahertz technology and applications
  • Color perception and design
  • Optical Polarization and Ellipsometry
  • Digital Holography and Microscopy
  • Visual perception and processing mechanisms
  • Optical Systems and Laser Technology
  • Optical Coherence Tomography Applications
  • Adaptive optics and wavefront sensing
  • Metamaterials and Metasurfaces Applications
  • Optical Wireless Communication Technologies
  • Atomic and Subatomic Physics Research

Northeast Petroleum University
2016-2025

City University of Hong Kong
2024-2025

Wuhan University
2017-2024

Guangxi University
2022-2024

Tiangong University
2020-2024

Central China Normal University
2023

Tsinghua University
2007-2023

Shandong University
2023

PetroChina Southwest Oil and Gas Field Company (China)
2023

Shenzhen University
2017-2020

A surface plasmon resonance (SPR) sensor with two open-ring channels based on a photonic crystal fiber (PCF) is described. The designed to detect low refractive indexes between 1.23 and 1.29 the operation wavelength in mid-infrared region 2550 nm 2900 nm. coupling characteristics sensing properties are numerically analyzed by finite element method. average spectral sensitivity 5500 nm/RIU maximum resolution of 7.69 × 10-6 RIU can be obtained. Our analysis shows that PCF-SPR suitable for detection.

10.1364/oe.25.014227 article EN cc-by Optics Express 2017-06-13

Symmetrical dual D-shape photonic crystal fibers (PCFs) for surface plasmon resonance (SPR) sensing are designed and analyzed by the finite element method (FEM). The performance of sensor is remarkably enhanced directional power coupling between two fibers. We study influence structural parameters on as well relationship wavelengths analyze refractive indexes 1.36 1.41. An average spectral sensitivity 14660 nm/RIU can be achieved in this range corresponding index resolution 6.82 × 10-6 RIU....

10.1364/oe.26.009039 article EN cc-by Optics Express 2018-03-28

To achieve simultaneous detection of analytes with different states in internal and external environments, A microstructured optical fibers (MOFs) biochemical sensor based on surface plasmon resonance (SPR) is proposed. The micro-polished dual-open-loop structure anti-corrosive gold as the sensing layer designed, which greatly improves phase matching between fundamental mode plasmonic to further stimulate SPR effect. Numerical simulation by full-vector finite element method (FEM) reveals...

10.1016/j.rinp.2023.106365 article EN cc-by-nc-nd Results in Physics 2023-03-16

Cuticular waxes, long-chain hydrocarbon compounds, form the outermost layer of plant surfaces in most terrestrial plants. The presence cuticular waxes protects plants from water loss and other environmental stresses. Cloning characterization genes involved regulation, biosynthesis, extracellular transport onto surface epidermal cells have revealed molecular basis wax accumulation. However, intracellular trafficking synthesized to plasma membrane for cellular secretion is poorly understood....

10.1093/jxb/erz131 article EN cc-by-nc Journal of Experimental Botany 2019-03-21

To achieve sensing of low refractive indexes (RIs) in the near-infrared region, a novel series-wound structure with dual gold nanowires is designed and photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) investigated. Numerical simulation by finite element method (FEM) reveals that odd mode for y-polarization has better properties due to more prominent shift confinement loss peak. The PCF-SPR can realize broad range detection RIs changing from 1.13 1.35. maximum...

10.1016/j.rinp.2020.103240 article EN cc-by-nc-nd Results in Physics 2020-07-17

A surface plasmon resonance (SPR) sensor composed of photonic crystal fibers (PCFs) is designed for the detection low-concentration liquids. The excellent sensing properties are attributed to sensitivity enhancement at dispersion turning point (DTP) polariton (SPP) modes. consists two identical and structurally simple D-shaped PCFs together with a plasmonic thin film coated on polished in direct contact analyte. Changes refractive index (RI) result splitting degenerate plasma peaks, thus...

10.1364/oe.531112 article EN cc-by Optics Express 2024-08-28

An asymmetrical birefringence photonic crystal fiber based on a surface plasmon resonance (SPR) sensor designed to detect the low analyte refractive indexes is investigated by novel analysis method. The results show that birefringent method can replace conventional confinement loss pertaining investigation SPR structures. air holes in are arranged square lattice structure and two active plasmonic gold layers deposited inner of left right channels enhance phenomenon. shows broad index...

10.1109/lpt.2018.2856859 article EN IEEE Photonics Technology Letters 2018-07-18

A tunable fiber polarization filter by filling different index liquids into the central hole of photonic crystal (PCF) is proposed and demonstrated. The dispersion characteristics loss spectra are evaluated finite element method (FEM). gold wires selectively filled cladding air holes PCF. When phase matching condition satisfied, liquid-core mode couples to surface plasmon polaritons (SPP) intensely. resonance wavelength varies with change structural parameters liquids. By adjusting...

10.1109/jlt.2016.2541220 article EN Journal of Lightwave Technology 2016-03-11

A high-sensitivity surface plasmon resonance (SPR) sensor is designed and analyzed numerically. The constructed on the eightfold U-shaped photonic quasi-crystal fiber (PQF) coated with indium tin oxide (ITO). coupling between core mode polariton enhanced due to shortening of distance ITO layer, so that PQF-SPR exhibits high refractive index (RI) sensitivity in near-infrared region. maximum wavelength corresponding resolution this are 42,000 nm/RIU <mml:math...

10.1364/ao.419518 article EN Applied Optics 2021-01-28

In light of pending capacity crunch in information era, orbital-angular-momenta-carrying vortex beams are gaining traction thanks to enlarged transmission capability. However, high-order confronted with fundamental limits nontrivial divergence or distortion, which consequently intensifies research on new optical states like low-order fractional beams. Here, we experimentally demonstrate an alternative mean increase the by simultaneously utilizing multiple non-orthogonal structured light,...

10.1364/oe.465318 article EN cc-by Optics Express 2022-07-22

ABSTRACT We present a single longitudinal mode Ho:YLF MOPA laser operating at 2050.7 nm by utilizing the Fabry–Perot etalon method to construct compact SLM seed and employing Tm‐doped fiber as amplifier. With an output power of 336 mW generated laser, maximum 13.1 W for was recorded pump 88.7 W. A peak slope efficiency 26.9% achieved when exceeded 58.7 To our knowledge, this is first report amplify operation laser.

10.1002/mop.70142 article EN Microwave and Optical Technology Letters 2025-02-01

Neural network architecture determines its functional output. However, the detailed mechanisms are not well characterized. In this study, we focused on neural architectures of male and hermaphrodite C. elegans association with sexually dimorphic behaviors. We applied graph theory computational neuroscience methods to systematically discern features these two networks. Our findings revealed that a small percentage sexual-specific neurons exerted dominance throughout entire net-work,...

10.7554/elife.102309.1 preprint EN 2025-02-27

Neural network architecture determines its functional output. However, the detailed mechanisms are not well characterized. In this study, we focused on neural architectures of male and hermaphrodite C. elegans association with sexually dimorphic behaviors. We applied graph theory computational neuroscience methods to systematically discern features these two networks. Our findings revealed that a small percentage sexual-specific neurons exerted dominance throughout entire net-work,...

10.7554/elife.102309 preprint EN 2025-02-27
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