A5001244094- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Photonic Crystals and Applications
- Semiconductor Lasers and Optical Devices
- Optical Coatings and Gratings
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Plasmonic and Surface Plasmon Research
- Semiconductor Quantum Structures and Devices
- Advanced Optical Sensing Technologies
- Gas Sensing Nanomaterials and Sensors
- Nanowire Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Acoustic Wave Resonator Technologies
- Nonlinear Waves and Solitons
- Mechanical and Optical Resonators
- Gyrotron and Vacuum Electronics Research
- Orbital Angular Momentum in Optics
- Terahertz technology and applications
- Advanced Antenna and Metasurface Technologies
- ZnO doping and properties
- Advanced Fiber Optic Sensors
- Quantum Mechanics and Non-Hermitian Physics
- Analytical Chemistry and Sensors
- Advanced MEMS and NEMS Technologies
Liaocheng University
2008-2024
Beijing University of Posts and Telecommunications
2018-2022
State Key Laboratory of Information Photonics and Optical Communications
2020
Chenguang Research Institute of Chemical Industry
2010
Fano resonance with high Q-factor is considered to play an important role in the field of refractive index sensing. In this paper, we theoretically and experimentally investigate a sensor performance, realizing new approach excite multiple resonances by introducing asymmetric parameter generate quasi-bound state continuum (BIC). Combined electromagnetic properties, formation mechanism different excitation modes analyzed resonant three peaks are as toroidal dipole (TD), magnetic quadrupole...
A multi-function sensor based on an all-dielectric metastructure for temperature and refractive index sensing simultaneously is designed analyzed in this paper. The structure composed of a periodic array silicon dimers placed the dioxide substrate. By breaking symmetry structure, ideal bound states continuum can be converted to quasi-bound continuum, three Fano resonances are excited near-infrared wavelength. Combining with electromagnetic field distributions, resonant modes as magnetic...
A polarization-insensitive two-dimensional highindex contrast gratings (2D-HCGs) beam splitter based on silicon-on-insulator is proposed and demonstrated, which performs two independent functions-transmission focusing power equalization at the wavelength of 1550 nm. The grating profile optimized by use rigorous coupled-wave analysis finite-element method (FEM). Simple analytical expressions phase modal guidelines for design are given. 2D-HCGs experimentally studied distance 600 190 μm from...
A novel Microstructure PIN photodiode (MPIN-PD) using the ray-optic theory of light trapping effect is presented and analyzed numerically. The MPIN-PD proposed from an ordinary large-diameter PIN-PD by introducing obconical shape surrounded a V-groove trench. photon-material interaction increased microstructure in PIN-PD. It can control cause syntony absorption layer, reducing junction capacitance PD, suppressing tradeoff between efficiency bandwidth. Thus, both 3-dB bandwidth quantum be...
We present the design and fabrication of a novel dual-function high contrast gratings that can be used as polarization-selective beam splitter with transverse magnetic polarization, which performs two independent functions, i.e. , reflection focusing power equalization at wavelength 1550 nm. This grating profile is optimized by rigorous coupled-wave analysis finite-element method. Simple analytical expressions phase modal guideline for are given. The based on structure experimentally studied...
We demonstrate a new, to the best of our knowledge, dimensional “horizontal optimization” scheme, which can improve high-speed characteristics PIN photodetector by designing incident optical field distribution. First, coaxially faculae with same peak and power are studied simulated, revealing that bandwidth illuminated uniform light is higher than device nonuniform light. Next, an annular designed photodetector, further improved. For carefully optimizing distribution, under be increased...
We numerically investigate two Fano resonances with high Q-factors based on a permittivity-asymmetric metastructure composed of pea-shaped cylinders. By employing different materials to break the permittivity-asymmetry, quasi-bound state continuum spectrum (BIC) resonance at 982.87 nm is excited, showing Q-factor as 8183.7. The electromagnetic fields and vectors are analyzed by using finite-difference time-domain (FDTD) method, modes identified magnetic dipole (MD) responses MDs multipole...
A miniaturized all-optical switch driven by optical gradient force has been demonstrated. Its extinction ratio and response time are 12dB 18ns, which can be adopted in communication systems silicon photonic integrated circuits.
The paper studied the application of Differential Quadrature Phase Shift Keying (DQPSK) in PMD compensation based on Carrier-Suppressed Return-to-Zero (CSRZ) format. Using simulation, Group Delay (DGD) and Degree Of Polarization (DOP) value histograms Return-to-Zero(RZ)DQPSK CSRZ -DQPSK signals before after Mode Dispersion (PMD) In present, Mold is primary factor to limit 40 Gbit/s optical fiber transmission systems. There are two means resolve this problem. One compensate by adaptive...
A novel photodetector, which uses a Si-based multi-cavity filter and an InP-based UTC is demonstrated. The device has quantum efficiency of 55%, the excellent spectral response, 3-dB bandwidth 24 GHz.