A5040468889- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Plasmonic and Surface Plasmon Research
- Advanced Fiber Laser Technologies
- Gas Sensing Nanomaterials and Sensors
- Spectroscopy and Laser Applications
- Orbital Angular Momentum in Optics
- Photonic Crystal and Fiber Optics
- Quantum optics and atomic interactions
- Semiconductor Lasers and Optical Devices
- Atmospheric Ozone and Climate
- 2D Materials and Applications
- Photonic Crystals and Applications
- Analytical Chemistry and Sensors
- Mechanical and Optical Resonators
- Photorefractive and Nonlinear Optics
- Advanced Chemical Sensor Technologies
- Advanced biosensing and bioanalysis techniques
- Metamaterials and Metasurfaces Applications
- Optical Network Technologies
- Liquid Crystal Research Advancements
- Advanced Photonic Communication Systems
- Advanced Sensor and Energy Harvesting Materials
- Atmospheric and Environmental Gas Dynamics
- Quantum Information and Cryptography
Jinan University
2016-2025
University of Shanghai for Science and Technology
2024
Wuhan University
2022-2024
Henan University of Technology
2024
Rice University
2019
Sun Yat-sen University
2008-2009
We demonstrate a novel all-fiber-optic humidity sensor comprised of WS2 film overlay on side polished fiber (SPF). This can achieve optical power variation up to 6 dB in relative (RH) range 35%-85%. In particular, this has linear correlation coefficient 99.39%, sensitivity 0.1213 dB/%RH, and resolution 0.475%RH. Furthermore, shows good repeatability reversibility, fast response breath stimulus. based all-fiber optic is easy fabricate, compatible with pre-established systems, holds great...
Graphene-based electrical chemical vapor sensors can achieve extremely high sensitivity, whereas the comparatively slow sensing response and recovery, research focused on only low concentration detection, have been known as drawbacks for many applications requiring rapid detection. Here we report a novel graphene-based fiber-optic relative humidity (RH) sensor relying fundamentally different mechanism. The power variation of up to 6.9 dB in range (70-95%), display linear with correlation...
The geometric Pancharatnam-Berry (PB) phase not only is of physical interest but also has wide applications ranging from condensed-matter physics to photonics. Space-varying PB phases based on inhomogeneously anisotropic media have previously been used effectively for spin photon manipulation. Here we demonstrate a novel wave-vector-varying that arises naturally in the transmission and reflection processes homogeneous paraxial beams with small incident angles. eigenpolarization states are...
Tungsten disulfide (WS2), as a representative layered transition metal dichalcogenide (TMDC) material, possesses important potential for applications in highly sensitive sensors. Here, sensitivity-enhanced surface plasmon resonance (SPR) sensor with film modified by an overlayer of WS2 nanosheets is proposed and demonstrated. The SPR sensitivity related to the thickness overlayer, which can be tailored coating ethanol suspension different concentrations or number times repeated post-coating....
Optical spin splitting has attracted significant attention owing to its potential applications in quantum information and precision metrology. However, it is typically small cannot be controlled efficiently. Here, we enhance the by transmitting higher-order Laguerre–Gaussian (LG) beams through graphene metamaterial slabs. The interaction between LG results an orbital-angular-momentum- (OAM) dependent splitting. upper bound of OAM-dependent found, which varies with incident OAM beam waist....
In this paper, a highly sensitive and integrated near-infrared CO2 sensor was developed based on quartz-enhanced photoacoustic spectroscopy (QEPAS). Unlike traditional QEPAS, novel pilot line manufactured quartz tuning fork (QTF) with resonance frequency f0 of 28 kHz employed as an acoustic wave transducer. A DFB laser diode emitting at 2004 nm the excitation light source for detection. An QEPAS module designed manufactured. The QTF, micro resonator (AmR), gas cell, fiber are integrated,...
A ppbv-level mid-infrared photoacoustic spectroscopy sensor was developed for mouth alcohol tests. compact CO2 laser with a sealed waveguide and integrated radio frequency (RF) power supply used. The emission wavelength is ∼9.3 µm of 10 W. detection limit ∼18 ppbv (1σ) ethanol gas an integration 1 s achieved. performed linear dynamic range R square value ∼0.999. breath measurement experiment after consuming lychees conducted. signal amplitude decreased the quality lychee consumed, confirming...
Hydrogen cyanide (HCN) is a toxic industrial chemical, necessitating low-level detection capabilities for safety and environmental monitoring. This study introduces novel approach detecting hydrogen using clamp-type custom quartz tuning fork (QTF) integrated with dual-tube acoustic micro-resonator (AmR) enhanced photoacoustic gas sensing. The design optimization of the AmR geometry were guided by theoretical simulation experimental validation, resulting in robust on-beam QEPAS...
There are two different proposals for the momentum of light in a transparent dielectric refractive index n: Minkowski's version nE/c and Abraham's E/(nc), where E c energy vacuum speed light, respectively. Despite many tests debates over nearly century, remains controversial. In this Letter, we report direct observation inward push force on free end face nanometer silica filament exerted by outgoing light. Our results suggest that is correct.
A long-range surface plasmon resonance (LRSPR) sensor with enhanced performance has been theoretically calculated and experimentally investigated for biosensing applications. The LRSPR-based is fabricated by employing a side-polished multimode fiber as waveguide MgF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> buffer layer beneath thin silver film supporting LRSPR excitation. Theoretical optimization based on transfer matrix method...
This paper presents a low-cost, flexible, and highly efficient wheel polishing techniques for the fabrication of sidepolished single mode-multimode-single mode fiber (SP-SMSF). The evolution transmission spectrum SP-SMSF is measured, simulated, discussed. good linear relationship between polished depth (PD) polish-induced loss has relatively high correlation at 95%, allowing us to monitor control critical parameter PD in line real time. Several desirable SPSMSF with = 9.6 , 15, 20.6 μm were...
A novel fiber structure, coreless side-polished (CSPF) that is wrapped by polydimethylsiloxane (PDMS), demonstrated to be highly sensitive temperature because of the high refractive index sensitivity CSPF and large thermal optic coefficient PDMS. Our numerical experimental results show several dips in transmitted spectra PDMSW-CSPF originated from multimode interference (MMI) will blueshift with increase temperature. Furthermore, for such a PDMSW-CSPF, we investigate its sensing...
Pilot line manufactured custom quartz tuning forks (QTFs) with a resonance frequency of 28 kHz and Q value >30, 000 in vacuum ∼ 7500 the air, were designed produced for trace gas sensing based on enhanced photoacoustic spectroscopy (QEPAS). The pilot was able to produce hundreds low-frequency QTFs small shift < 10 ppm, benefiting detecting molecules slow vibrational-translational (V-T) relaxation rates. An Au film thickness 600 nm deposited both sides QTF enhance piezoelectric charge...
A novel strategy to modify the plasmonic interface by spin-coating an overlayer of graphene oxide sheets (GOSs) on top surface plasmon resonance (SPR) sensor is proposed and demonstrated. Thanks excellent electrical conductivity, large area, high-refractive index GOSs layer, GOSs-modified SPR (GOSs-SPR) achieves improved sensitivity in detection bulky refractive solutions bovine serum albumin (BSA) solutions. The maximum 2715.1 nm/RIU achieved three spin-coatings shows enhancement 20.2% than...
Radial-cavity quartz-enhanced photoacoustic spectroscopy (RC-QEPAS) was proposed for trace gas analysis. A radial cavity with (0,0,1) resonance mode coupled the quartz tuning fork (QTF) to greatly enhance QEPAS signal and facilitate optical alignment. The enhancement effects of QTF were analyzed theoretically researched experimentally. With an optimized cavity, detection sensitivity enhanced by <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mo>></mml:mo>...
Non-contact quartz-enhanced photoacoustic spectroscopy (NC-QEPAS) was proposed and developed for trace gas analysis. The NC-QEPAS aims at solving the problem that quartz tuning fork (QTF) must be immersed in gases wave transducing, which limits its application corrosive dusty sensing. In this work, QTF isolated from gas, realizing “non-contact” detection. An elastic parylene film synthesized then patched to slit of a QEPAS cell. With an optimized coupling effect, shows resonance enhancement...
In this work, we developed off-plane quartz-enhanced photoacoustic spectroscopy (OP-QEPAS). the OP-QEPAS light beam went neither through prong spacing of quartz tuning fork (QTF) nor in QTF plane. The is parallel with an optimal distance, resulting low background noise. A radial-cavity (RC) resonator was coupled to enhance signal by radial resonance mode. By offsetting both and laser position from central axis, effect acoustic prevent noise generated direct irradiation QTF. Compared IP-QEPAS...
Abstract Biochemical sensors have important applications in biology, chemistry, and medicine. Nevertheless, many biochemical are hampered by intricate techniques, cumbersome procedures, the need for labeling. In past two decades, it has been discovered that liquid crystals can be used to achieve optical amplification of biological interactions. By modifying recognition molecules, a variety label-free created. Consequently, based on become one most promising sensors. This paper describes...
In this paper, a side-polished fiber (SPF) coated with molybdenum diselenide (MoSe2) is proposed, and its characteristic of relative humidity (RH) sensing investigated. It found in the experiment that an enhancement RH sensitivity (0.321 dB/%RH) can be achieved very wide range 32%RH to 73%RH for proposed MoSe2 SPF (MoSe2CSPF). also shown MoSe2CSPF has rapid response 1s recovery time 4s, which makes sensor capable monitoring human breath. The experimental results suggest promising potential...
We demonstrate a novel all-fiber-optic temperature sensor based on reduced graphene oxide (rGO) film coated onto side-polished fiber (SPF). Significantly enhanced interaction between the propagating light and rGO can be obtained via strong evanescent field of SPF. The light–graphene results in sensing with maximum optical power variation 11.3 dB SPF experimentally. has linear correlation coefficient 99.4%, sensitivity 0.134 °C−1, precision better than 0.03 °C, response speed 0.0228 °C s−1....
We propose and demonstrate a novel strategy to modify the plasmonic interface by using thin layer of halloysite nanotubes (HNTs). The modified surface plasmon resonance (SPR) sensor achieves greatly improved sensitivity because large area high refractive index HNTs significantly increase probing electric field intensity hence measurement sensitivity. More significantly, thickness can be tailored spraying different concentrations ethanol suspension. proposed sensors show significant...
In this work, we demonstrate a highly-sensitive vector magnetometer based on few-mode-fiber-based surface plasmon resonance (SPR) sensor functionalized by magnetic nanoparticles (MNPs) in liquid. To fabricate the sensor, few-mode fiber is side-polished and coated with gold film, forming an SPR that highly sensitive to surrounding refractive index. The operates mechanism whereby intensity orientation of external field alters anisotropic aggregation MNPs thus index around device. This, turn,...
A novel terahertz (THz) sensing scheme is proposed based on the photonic spin Hall effect (PSHE). By illumining a paraxial Gaussian THz beam onto black phosphorus (BP)-based Tamm structure, reflected will undergo in-plane splitting, i.e., centroids of two opposite components separate spatially. Due to plasmon resonance, one very sensitive refractive index changes analyte layer sandwiched by monolayer BP and distributed Bragg reflector. The sensitivity spin-dependent shift can be up 2804...