A5002366296- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Analytical Chemistry and Sensors
- Optical Network Technologies
- Random lasers and scattering media
- Photonic Crystal and Fiber Optics
- Plasmonic and Surface Plasmon Research
- Advanced Biosensing Techniques and Applications
- Optical Coherence Tomography Applications
- Polydiacetylene-based materials and applications
- Gas Sensing Nanomaterials and Sensors
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- Laser-Matter Interactions and Applications
- Glycosylation and Glycoproteins Research
- 2D Materials and Applications
- Advanced Optical Sensing Technologies
- Proteoglycans and glycosaminoglycans research
- Advanced biosensing and bioanalysis techniques
- Orbital Angular Momentum in Optics
- MXene and MAX Phase Materials
- Nonlinear Optical Materials Studies
- Electrochemical sensors and biosensors
- Cell Adhesion Molecules Research
Xi'an Institute of Optics and Precision Mechanics
2019-2025
Chinese Academy of Sciences
2019-2025
Northwest University
2017-2024
University of Chinese Academy of Sciences
2019-2023
The rapid and sensitive detection of pepsin plays an important role in clinical medical practice. A label-free micro-tapered long-period fiber grating (MTLPFG) sensor that functionalized by graphene oxide (GO) was proposed for detection. MTLPFG fabricated with CO2 laser heating tapered to form a series periods, the GO activated oxygen groups EDC/NHS deposited onto surface. On account large specific surface area containing GO, biomolecules can be adsorbed on through amide π-π stacking....
Abstract A biosensor for bovine serum albumin (BSA) detection by graphene oxide (GO) functionalized micro-taped long-period fiber grating (GMLPG) was demonstrated. The amide bond connected between the GO and BSA enabled to attach onto surface, which changed effective refractive index of cladding mode characterized concentration BSA. This real-time monitoring system demonstrated a sensing sensitivity 1.263 nm/(mg/mL) limit 0.043 mg/mL. Moreover, it illustrated superior measurement performance...
ABSTRACT High mobility group box 1 (HMGB1) is considered a pivotal mediator and biomarker in inflammatory diseases, garnering increasing attention for precise detection. Silicon on insulator (SOI) integrated waveguide biosensors have the advantages of high sensitivity, easy functionalization, compatibility with CMOS technology, promising enhanced sensing HMGB1. Here, we propose chip‐scale, cost‐effective HMGB1 sensor device based micro‐ring resonator (MRR), which surface functionalized by...
ReS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> films with different thickness are fabricated by a vacuum filtration from liquid exfoliated suspension. The saturable absorption properties of these investigated an open-aperture Z-scan technique femtosecond laser. coefficients αNL and the imaginary part third-order optical susceptibility Imχ <sup xmlns:xlink="http://www.w3.org/1999/xlink">(3)</sup> -61.5 to -171.8 cm/GW -2.24 x 10...
An accurate as well highly sensitive label-free chemical sensing platform for the detection of various metal ions was demonstrated. The sensor derived from micro-tapered long-period fiber grating (MLPG) by depositing graphene oxide (GO) chemical-bonding and optical-tweezer effects. enhancement in refractive index (RI) sensitivity reusability obtained evaluating deposition thickness range approximately 97.7 to 158.9 nm. Based on analysis adsorption principles, enhanced RI leads a limit low...
A highly sensitive label-free chemical sensing platform for the detection of various metal ions is demonstrated. The sensor was derived from a single-mode fiber that inserted into ceramic tube with epoxy resin (ER) on end face reflecting light and forms Fabry-Perot (F-P) interferometric cavity. Multilayer chitosan (CS)/polyacrylic acid (PAA) were coated surface act as film. Based analysis principle F-P cavity structure, parameters numerically simulated experimentally evaluated, which enables...
We demonstrated all-optical intensity modulator based on polarization-dependent graphene-covered microfiber (GMF) waveguide. By controlling the polarization mode of incident light, a greatly adjustable enhanced interaction between propagating light and graphene can be obtained via evanescent field microfiber. employing 980-nm pump 1550-nm signal in continuous wave, strong light–graphene enables maximum modulation depth ∼20.86 dB, by pumping 980 nm wave pulses, we temporal response...
We report a Ni2+ heavy metal sensor based on graphene oxide (GO) functionalized micro-tapered long-period fiber grating (MTLPG) where light–matter interaction is enhanced. With high-quality GO coating with strong adhesion and controllable thickness, the GO-coated MTLPG demonstrated resonant wavelength shift intensity change, corresponding to sensitivity of up 5.12 × 10−4 nm ppb−1 3.07 10–4 dB ppb−1, respectively. Moreover, limits detection were 2.5 ppb 0.27 ppb, respectively, operating in...
Heated by CO2 laser, the tapered long-period fiber grating (TLPFG) and rotated chiral gratings (CLPFG) were fabricated periodically tapering rotating standard single-mode (SMF). The temperature sensing characteristics of TLPFG CLPFG between 30-60 ℃ investigated experimentally, slopes wavelength shift achieved 0.115 nm ℃-1 0.04 ℃-1, respectively. graphene films coated on to fabricate (GTLPFG) (GCLPFG). Due thermal effects graphene, resonance dips GTLPFG GCLPFG increased 0.196 0.113 In...
Abstract To our knowledge, optical 4 f systems have been widely used as a convolutional layer to perform computation in free-space neural networks (ONNs), which makes ONNs too bulky be easily applied miniaturized smart systems. Hence, we propose compact lensless optoelectronic network (LOE-CNN) architecture single optimized diffractive phase mask acts an analog convolution processor operation without Fourier lens or lenslet array. We demonstrate that this LOE-CNN can functionally comparable...
Graphene microfibers are burgeoning modulators with great potential in all-optical communication. One of the critical issues that remains to be understood is dynamic mechanism light–graphene interaction. Here, we propose a power dependent modulation by using 980 nm pump light and 1064 nm signal via graphene microfiber, results show strong transmission reduction frequency blue shift increase power. The experimental observation attributed stimulated Brillouin scattering process induced light....