A5103061515- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Fatigue and fracture mechanics
- Optical Network Technologies
- Neural Networks and Reservoir Computing
- Solid State Laser Technologies
- Mechanical Failure Analysis and Simulation
- Electrowetting and Microfluidic Technologies
- Structural Health Monitoring Techniques
- Advancements in Semiconductor Devices and Circuit Design
- Engineering Applied Research
- Semiconductor materials and devices
- Non-Destructive Testing Techniques
- Optical Polarization and Ellipsometry
- Adaptive optics and wavefront sensing
- Structural Response to Dynamic Loads
- High-Voltage Power Transmission Systems
- Optical Systems and Laser Technology
- Mechanical and Thermal Properties Analysis
- Ferroelectric and Negative Capacitance Devices
- Industrial Technology and Control Systems
- Power Systems and Technologies
- Mechanical stress and fatigue analysis
- Near-Field Optical Microscopy
East China Normal University
2021-2024
Chinese Academy of Sciences
2024
University of Chinese Academy of Sciences
2024
Shanghai Electric (China)
2024
Changchun Institute of Optics, Fine Mechanics and Physics
2024
Electric Power Research Institute
2016
Abstract The realization of high-quality (Q) resonators regardless the underpinning material platforms has been a ceaseless pursuit, because high-Q provide an extreme environment for confining light to enable observations many nonlinear optical phenomenon with high efficiencies. Here, photonic microresonators mean Q factor 6.75 × 10 6 were demonstrated on 4H-silicon-carbide-on-insulator (4H-SiCOI) platform, as determined by statistical analysis tens resonances. Using these devices, broadband...
Abstract Photonic neural networks (PNNs) have emerged as a promising platform to address the energy consumption issue that comes with advancement of artificial intelligence technology, and thin film lithium niobate (TFLN) offers an attractive solution material mainly for its combined characteristics low optical loss large electro‐optic (EO) coefficients. Here, first implementation EO tunable Mach‐Zehnder interferometer (MZI) mesh‐based TFLN PNN is presented. The device features ultra‐high...
Abstract A high‐power thin film lithium niobate (TFLN) erbium‐doped waveguide amplifier (EDWA) is demonstrated with a maximum on‐chip output power of 113 mW and gain 16 dB. The integrated EDWA composed large mode area (LMA) structures total length 7 cm footprint 1 × 2 . Segmented LMA waveguides are connected tapers to achieve conversion, which maintains single‐mode propagation all over the even at bends. design leads significant increase in amplified signal by orders magnitude will open an...
We demonstrate an on-chip Yb3+-doped lithium niobate (LN) microdisk laser. The intrinsic quality factors of the fabricated LN resonator are measured up to 3.79×105 at a 976 nm wavelength and 1.1×106 1514 wavelength. multi-mode laser emissions obtained in band from 1020 1070 pumped by 984 with low threshold 103µW, resulting slope efficiency 0.53% room temperature. Furthermore, both second-harmonic frequency pump light sum generated microdisk, benefiting strong χ(2) nonlinearity LN. These...
We demonstrate on-chip coherent beam combination of two waveguide amplifiers on Er3+-doped thin film lithium niobate (Er:TFLN) platform. Our device is built based an electro-optic modulator fabricated Er:TFLN. The output power the coherently combined measured as high 12.9 mW, surpassing that previous single
We report the fabrication and optical characterization of Yb3+-doped waveguide amplifiers (YDWA) on thin film lithium niobate fabricated by photolithography assisted chemo-mechanical etching. The waveguides demonstrates low propagation loss 0.13 dB/cm at 1030 nm 0.1 1060 nm. internal net gain 5 dB 8 are measured a 4.0 cm long pumped 976 laser diodes, indicating per unit length 1.25 2 nm, respectively. integrated will benefit development powerful platform expected to contribute high-density...
Laser-spot-location detection technology based on photodetectors is widely used in the aerospace, medical, military and communication fields. However, most of current research focuses continuous laser visible near-infrared bands, real-time high-precision position a long-wave infrared pulsed lacking. In this paper, spot-position system four-quadrant detector designed for 10.6 μm CO2-driven extreme ultraviolet light source, second-order extended error compensation algorithm Gaussian-spot model...
We demonstrate on-chip coherent beam combination of two waveguide amplifiers on Er$^{3+}$-doped thin film lithium niobate (Er: TFLN) platform. Our device is built based an electro-optic modulator fabricated Er: TFLN. The output power the coherently combined measured as high 12.9 mW, surpassing that previous single
Every year substations have a large number of discarded battery. These battery increase environment handle stress and pollute groundwater resources, causing huge economic waste. This paper, based on the important role storage in substation DC system, analysis current status operation, maintenance using online monitoring device, propose on-line inspection, repair system. The system has daily detection, charging discharging, to sulfide repair, comprehensive analysis, intelligent management,...
Photonic integrated circuits based on erbium doped thin film lithium niobate insulator has attracted broad interests with insofar various waveguide amplifiers and microlasers demonstrated. Wideband operation facilitated by the broadband absorption emission of ions necessitates functional integration wavelength filter multiplexer same chip. Here a low-loss division at resonant pumping wavelengths (~1480 nm 1530~1560 nm) angled multimode interferometer, is realized in fabricated...
Photonic neural networks (PNNs) have emerged as a promising platform to address the energy consumption issue that comes with advancement of artificial intelligence technology, and thin film lithium niobate (TFLN) offers an attractive solution material mainly for its combined characteristics low optical loss large electro-optic (EO) coefficients. Here, we present first implementation EO tunable PNN based on TFLN platform. Our device features ultra-high fidelity, high computation speed,...
In this paper, we study the effect of poly corner residue during a 5nm FinFET etch process using virtual fabrication. A systemic investigation was performed to understand impact on hard failure modes and device performance. Our results indicate that larger width height residues can lead by creating short between source/drain epitaxy metal gate. Surprisingly, properly-sized boost performance with greater than 8% on-state current increase about 50% off-state drop, compared having no residue....
A method of improving the image quality an optical system using liquid crystal lens is proposed and demonstrated by experiments. Because magnification invariant with imaging, processing focused defocused images can be done to enhance contrast image.
Abstract A method based on image processing is proposed to solve the problem of polarizer dependency LC lens. No required for imaging by In an system with lens, images I l and n are captured sequentially in lens non‐lens states respectively. The final obtained according equation = – 0.5I . proposal tested experimentally. Clear well focused obtained.
Optical powers and RMS aberrations of the LC lens with different cell gap are studied. With increasing gap, exhibits similar relation between optical power driving voltage, increase power. The maximum within aberration level 0.07 wave corresponding voltage nearly proportional to gap.