A5002935811- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Drilling and Well Engineering
- Oil and Gas Production Techniques
- Advanced Photonic Communication Systems
- Mechanical and Optical Resonators
- Advanced Photocatalysis Techniques
- Optical Network Technologies
- Reservoir Engineering and Simulation Methods
- Hydraulic Fracturing and Reservoir Analysis
- Optical Coatings and Gratings
- Photonic Crystals and Applications
- Iron oxide chemistry and applications
- Advanced Control Systems Optimization
- Machine Fault Diagnosis Techniques
- Advanced Sensor and Control Systems
- 2D Materials and Applications
- Electrocatalysts for Energy Conversion
- Nanomaterials for catalytic reactions
- Advanced oxidation water treatment
- Gas Sensing Nanomaterials and Sensors
- Hydraulic and Pneumatic Systems
- Perovskite Materials and Applications
- Advanced Data Processing Techniques
Huaiyin Institute of Technology
2023-2025
University of Maryland, College Park
2018-2023
China University of Petroleum, Beijing
2021-2023
The successful synthesis of carbon nitride films plays a crucial role in photoelectrochemical (PEC) water oxidation reactions. However, significant technical challenge is that the contact between g-C3N4 layer and fluorine-doped tin oxide (FTO) substrate suboptimal, as well recombination photogenerated electrons holes grievous, directly affecting effective charge transport overall photocatalytic efficiency. Herein, we fabricated thin photoanode through simple chemical vapor deposition, NiO...
Both managed pressure drilling (MPD) and kill procedures depend on the rapid precise control of choke under varying conditions. To enhance safety automate MPD well operations, we employed African vulture optimization algorithm, a proportional integral derivative controller, an automated panel for management. Laboratory offshore platform experiments were conducted to simulate single-phase two-phase flow Additionally, reliability analysis was performed using fault tree dynamic Bayesian network...
We present the design and experimental results of a novel polarization beam splitter (PBS) with high extinction ratio (PER) made on Si 3 N 4 platform. The PBS is composed two identical polarization-independent multi-mode interferometers apodized Bragg gratings. operating principle this device based fact that TE TM stopbands grating are centered at different wavelengths. reflected transmitted light from gratings routed to separate output ports by two-MMI configuration. show PER > 30 dB...
We present a silicon nitride/silicon dioxide add–drop filter operating on arbitrarily spaced channels using multimode interferometers (MMIs) and complex waveguide Bragg gratings (CWBGs). The shows rejection ratio of >40 dB all five channels, with line width 1.2 nm an on-chip loss <1 dB. By designing the CWBG Layer Peeling/Layer Adding algorithm, this MMI-CWBG platform has capability for ultrabroadband operation channels.
To provide a solution to the issue of non-flat focal surface in traditional Rowland AWGs, we have designed and implemented Si3N4 three-stigmatic-point arrayed waveguide grating (TSP AWG) with three inputs, spectral resolving power over 17,000 has been achieved experimentally. The flat this AWG can accommodate butt-coupled detector array positioned at output facet without any reduction edge channels. Therefore, it is particularly advantageous some astronomical applications which require an as...
We demonstrate a transmitter and receiver in silicon photonics platform for O-band optical communication that monolithically incorporates modulator driver, traveling-wave Mach-Zehnder modulator, control circuitry, photodetector, transimpedance amplifier (TIA) the GlobalFoundries Fotonix (45SPCLO) platform. The show an open 112 Gbps PAM4 eye at 4.3 pJ/bit energy efficiency, not including laser. Extensive use of gain-peaking enables our driver TIA to achieve high bandwidths needed 45 nm...
We report the design and characterization of a high performance integrated arbitrary filter from 1450 nm to 1640 nm. The filter's target spectrum is chosen suppress night-sky OH emission lines, which critical for ground-based astronomical telescopes. This type featured by its large spectral range, rejection ratio narrow notch width. Traditionally it only successfully accomplished with fiber Bragg gratings. technique we demonstrate here proven be very efficient on-chip platforms, can bring...
Silicon nitride integrated photonic devices benefit from a wide working spectral range covering the visible and near-infrared spectra, which in turn enables important applications bio-photonics, optical communications, sensing. High-quality factor resonators are essential for such applications. However, implementing on silicon platform is quite challenging due to low refractive index contrast attainable with this material. Here, we demonstrate that cavities comprising slow-light waveguide...
Arrayed waveguide gratings with reusable delay lines (RDL-AWGs) are demonstrated as high resolving power integrated photonic spectrometers. One of the devices is 71 times more compact than traditional AWG, which improves performance spectrometer. A 27,780 experimentally demonstrated.
An ultra-high intrinsic quality factor ( Q int ) of 13 million for a Fabry-Perot Bragg grating resonator is demonstrated. The loss the Si 3 N 4 waveguide platform evaluated to be 0.018 dB/cm.
We present experimental and simulation results of sidewall Bragg gratings (BGs) implemented on a silicon nitride waveguide platform, with emphasis the appreciable drop transmission high-frequency side grating stopband due to coupling into backward cladding/radiative modes. differentiate this from slab modes as observed in BGs silicon-on-insulator ridge waveguides. The dimension device top cladding affects shape pattern. Different approaches for circumventing pattern are discussed. A better...
We present the design and preliminary experimental results of a novel silicon nitride polarization beam splitter. Measured data show that 33 dB extinction ratio is achieved over bandwidth 18 nm.
Large amounts of oil and gas resources are stored in carbonate rocks, fracturing is an important technology to exploit reservoirs, The communication between artificial fractures natural very for the effect evaluation after lacks quantitative description. Therefore, it necessary study reservoirs. This paper analyzes pressure curve obtained true triaxial experiment. with fracture vugs process propagation explored. Finally, characteristics communicating cavity under different modes obtained, identified.
We present the design of a broadband Si3N4 polarization beam splitter based on asymmetric directional couplers. A 20 dB extinction ratio has been achieved over bandwidth 103 nm experimentally.
We demonstrate a transmitter and receiver in silicon photonics platform for O-band optical communication that monolithically incorporates modulator driver, traveling-wave Mach-Zehnder modulator, control circuitry, photodetector, TIA the GlobalFoundries Fotonix™ (45SPCLO) platform. The show an open 112 Gbps PAM4 eye at 4.3 pJ/bit energy efficiency, not including laser. Extensive use of gain-peaking enables our driver to achieve high bandwidths needed 45 nm CMOS-silicon process. Our results...
We demonstrate a transmitter and receiver in silicon photonics platform for O-band optical communication that monolithically incorporates modulator driver, traveling-wave Mach-Zehnder modulator, control circuitry, photodetector, TIA the GlobalFoundries Fotonix™ (45SPCLO) platform. The show an open 112 Gbps PAM4 eye at 4.3 pJ/bit energy efficiency, not including laser. Extensive use of gain-peaking enables our driver to achieve high bandwidths needed 45 nm CMOS-silicon process. Our results...
The photogenerated hole transfer from the bulk to surface is highly valued in rational design of advanced photoanodes. However, electrons FTO substrate has a vital influence on separation behaviors charges as well, which would regulate photoelectrochemical (PEC) performance photoanodes turn. Herein, W-TiO2/Ti-Fe2O3 heterojunction was fabricated for first time by inserting W-TiO2 electron layer between Ti-Fe2O3 photoanode and substrate. Benefitting unique transport channel W-TiO2, could...
We report the optimization of reconstruction algorithm and experiment for an integrated arbitrary filter. A 43-notch filter near 1550 nm is implemented with ultra-low-loss Si 3 N 4 /SiO 2 spiral waveguide. All notches have uniform depths/widths about 20 dB/0.2 nm.