A5100647991- Advanced Fiber Optic Sensors
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Mechanical and Optical Resonators
- Phase-change materials and chalcogenides
- Innovative Microfluidic and Catalytic Techniques Innovation
- Photonic Crystals and Applications
- Advanced MEMS and NEMS Technologies
- Optical Coherence Tomography Applications
- Electrowetting and Microfluidic Technologies
- Spectroscopy and Laser Applications
- Electrohydrodynamics and Fluid Dynamics
- Photoacoustic and Ultrasonic Imaging
- Pickering emulsions and particle stabilization
- Catalytic Processes in Materials Science
- Advanced Sensor and Control Systems
- Industrial Gas Emission Control
- Luminescence Properties of Advanced Materials
- Advanced Photocatalysis Techniques
- Electrical Fault Detection and Protection
- Power Transformer Diagnostics and Insulation
- Neural Networks and Reservoir Computing
Shandong University of Technology
2025
Yangtze Optical Electronic (China)
2015-2024
Zhengzhou University
2024
Southern University of Science and Technology
2024
Nanjing University of Science and Technology
2020-2024
South China University of Technology
2023
University of Nottingham Ningbo China
2018-2021
University of Southampton
2011-2019
University of Nottingham
2008-2010
A novel single-polarization single-mode double-ring hollow-core anti-resonant fiber with two regions (1545-1553 nm and 1591-1596 nm) is proposed. Single-polarization guidance achieved by coupling a polarized fundamental mode silica using different tube thicknesses. Specifically, when the wavelength 1550 nm, only single x-polarized low loss of 0.04 dB/m propagated polarization extinction ratio 17662 minimum higher-order 393 optimizing structural parameters. Furthermore, this also exhibits...
We propose and experimentally demonstrate wideband continuously tunable fractional-order photonic Hilbert transformers (FrHT). These are realized by a single apodized planar Bragg grating within high-birefringence substrate. The fractional order of the FrHT is tuned precisely controlled changing polarization state input light. experimental characterization demonstrates an operating bandwidth up to 120 GHz with amplitude ripples below 3 dB. optical phase shift response directly measured...
A highly sensitive inline gas pressure sensor based on the hollow core Bragg fiber (HCBF) and harmonic Vernier effect (VE) is proposed experimentally demonstrated. By sandwiching a segment of HCBF between lead-in single-mode (SMF) (HCF), cascaded Fabry-Perot interferometer produced. The lengths HCF are precisely optimized controlled to generate VE, achieving high sensitivity sensor. Meanwhile, digital signal processing (DSP) algorithm research mechanism VE envelope, thus providing an...
Here, we devise a universal method for preparing colloidal photonic crystals (CPCs) composed of novel building blocks, using inverse opal materials as templates. This not only enables the preparation...
Single-mode optical rib waveguides operating at telecommunication wavelengths are successfully patterned via a hot embossing technique in thermally evaporated chalcogenide glass thin film on substrate. Ellipsometry is used to measure the refractive index dispersion of pressed (As(40)Se(60)) and substrate (Ge(17)As(18)Se(65)).
A dual-parameter sensing structure based on a fiber Bragg grating (FBG) incorporated side-open Fabry-Perot cavity (FPC) is proposed and experimentally demonstrated for simultaneous measurements of gas pressure temperature. The FPC consisted micro-piece chemical etched side-hole acts as unit. Two samples with different lengths 60 μm 100 were fabricated tested temperature in the experiment. Linear responses 4.063 pm/kPa 4.071 large measuring range 0-1000 kPa obtained, respectively, which agree...
A novel optical fiber liquid level sensor based on a hollow core Bragg (HCBF) was proposed and demonstrated. The HCBF first designed successfully fabricated with periodic transmission band in the spectrum loss of ~3.48 dB/cm. An inline liquid-level by simply sandwiching piece between two single mode fibers. sensing performance experimentally tested. linear sensitivity ~1.1 dB/mm, fast response time less than 3s obtained intensity demodulation measurement. temperature refractive index...
We have proposed and experimentally demonstrated a novel optical fiber sensor for simultaneous measurement of high temperature gas pressure based on Regenerated Fiber Bragg grating (RFBG) cascaded with homemade hollow core (HCBF). The HCBF functions as an anti-resonant reflecting waveguide acts sensing unit. sample was fabricated tested in our lab, exhibiting linear sensitivity −3.747 nm/MPa 25.925 pm/°C large-dynamic range 2 MPa 600 °C, respectively. RFBG, monitor, integrated to compensate...
Optical fibers are an excellent transmission medium for light and underpin the infrastructure of Internet, but generally after fabrication their optical properties cannot be easily modified.Here, we explore concept nanomechanical where, in addition to fiber capability, internal core structure can also controlled through sub-micron mechanical movements.The functionality such is demonstrated form dual fibers, which cores independently suspended within fiber.The movement-based change large...
We design an ultrabroadband polarization splitter based on three-core photonic crystal fiber (PCF). A modulation core and two fluorine-doped cores are introduced to achieve ultrawide bandwidth. The properties of PCF modeled by using the full-vector finite element method along with beam propagation method. Numerical results demonstrate that 320 nm bandwidth extinction ratio as low −20 dB can be achieved 52.8 mm long PCF. This also has high compatibility standard single-mode fibers input...
An ultrawide bandwidth and single-mode polarization beam splitter (PBS) based on an air-gap type of dual-hollow-core antiresonant fiber (DHC-ARF) is proposed. Nested tubes are introduced into two cladding between cores to weaken the wavelength dependence coupling length in DHC-ARF for obtaining bandwidth. By tuning tube sizes, higher-order core modes with lowest loss can be coupled modes, thus, effectively, operation achieved. Numerical results demonstrate that 8.15 cm long used develop a...
The rapid development of information and communication technology has driven the demand for higher data transmission rates. Multi-core optical fiber, with its ability to transmit multiple signals simultaneously, emerged as a promising solution meet this demand. Additionally, due characteristics such multi-channel transmission, high integration, spatial flexibility, versatility, multi-core fibers hold vast potential in sensing applications. However, manufacturing fiber is still early stages,...
In this Letter, we propose an in-line tilted fiber Bragg grating sensor for temperature and strain measurements. The is inscribed in a specialty optical using tightly focused femtosecond laser pulses the line-by-line direct writing method. Beside central core which produced, hollow channel filled with glycerol aqueous solution significantly improves sensitivity of cladding modes due to its high thermo-optic coefficient. We show that mode 9.8 pm/°C, while one strongly altered can reach -24.3...
Specialty optical fibers, in particular microstructured and multi-material have complex geometry terms of structure and/or material composition. Their fabrication, although rapidly developing, is still at a very early stage development compared with conventional fibers. Structural characterization these fibers during every step their multi-stage fabrication process paramount to optimize the fiber-drawing process. The complexity restricts use refractometry microscopy techniques determine...
This Letter shows the Vernier effect based on two segments of PANDA polarization maintaining fiber (PMF), whose lengths are 28 and 23 cm, respectively. The PMFs spliced together, angle between fast axes is set to 45°. cascaded PMF inserted in a Sagnac loop form an interferometer that can generate effect. spectrum consists finesse fringe envelope realizes simultaneous measurement strain temperature. provide temperature sensitivities 58.0 pm/με 1.05 nm/°C. provides 5.9 1.36
We propose a new method to achieve single-polarization guidance in hollow-core negative-curvature fiber. Simulation results show that coating layer of high-index material with suitable thickness on the inner surface one vertical cladding tube fiber can effectively suppress y-polarized fundamental mode. Silicon is chosen as this paper. In five-nested-tube silicon-coated fiber, region located wavelength range 1512-1587 nm broad bandwidth 75 nm. The polarization extinction ratio up 1732 at 1550...
A highly sensitive relative humidity (RH) sensor based on Fabry-Perot interferometers (FPI) is proposed and experimentally demonstrated. The fabricated by splicing a segment of hollow core Bragg fiber (HCBF) with single mode (SMF) functionalized chitosan ultraviolet optical adhesive (UVOA) composite at the end HCBF to form hygroscopic polymer film. reflection beams from point two surfaces film generate Vernier effect in spectrum, which significantly improves sensitivity sensor. To demodulate...