A5101822598- Photonic and Optical Devices
- Photonic Crystals and Applications
- Semiconductor Quantum Structures and Devices
- Semiconductor Lasers and Optical Devices
- Optical Coatings and Gratings
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Nanowire Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Semiconductor materials and devices
- Advanced Fiber Optic Sensors
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Advanced Photonic Communication Systems
- Semiconductor materials and interfaces
- Spectroscopy and Laser Applications
- Advanced Image and Video Retrieval Techniques
- Silicon and Solar Cell Technologies
- Advancements in Semiconductor Devices and Circuit Design
- Remote-Sensing Image Classification
- solar cell performance optimization
- Machine Learning and ELM
- Neural Networks and Applications
- Advanced Neural Network Applications
- Integrated Circuits and Semiconductor Failure Analysis
Zhejiang University
2007-2025
Polar Research Institute of China
2023
Harbin Institute of Technology
2023
Tongji University
2022-2023
Ghent University
2012-2021
Keysight Technologies (United States)
2019
KTH Royal Institute of Technology
2007-2017
IMEC
2016-2017
Ghent University Hospital
2016
Zhejiang University of Technology
2009-2011
Silicon does not emit light efficiently, therefore the integration of other light‐emitting materials is highly demanded for silicon photonic integrated circuits. A number approaches have been extensively explored in past decade. Here, most recent progress this field reviewed, covering III‐V‐to‐silicon bonding, transfer printing, epitaxial growth and use colloidal quantum dots. The basic to create waveguide‐coupled on‐chip sources different application scenarios are discussed, both nitride...
Flexible solar cells have a lot of market potential for application in photovoltaics integrated into buildings and wearable electronics because they are lightweight, shockproof self-powered. Silicon been successfully used large power plants. However, despite the efforts made more than 50 years, there has no notable progress development flexible silicon their rigidity1-4. Here we provide strategy fabricating large-scale, foldable wafers manufacturing cells. A textured crystalline wafer always...
A polarization rotator based on asymmetrical Si nanowires is presented and optimized for high rotation efficiency (almost 100%). The present has a very small conversion length (~10 μm) consequently becomes compact. analysis of the wavelength dependence shows broad bandwidth (~120 nm) (>97%). tolerance to various fabrication errors also numerically studied. To compensate error, postcompensation method introduced by modifying refractive index up-cladding.
Optical frequency combs emerge as a promising technology that enables highly sensitive, near-real-time spectroscopy with high resolution. The currently available comb generators are mostly based on bulky and high-cost femtosecond lasers for dense generation (line spacing in the range of 100 MHz to 1 GHz). However, their integrated low-cost counterparts, which semiconductor mode-locked lasers, limited by large spacing, small number lines broad optical linewidth. In this study, we report...
We present design, fabrication, and characterization of a silicon-on-insulator grating coupler high efficiency for coupling between silicon nanophotonic waveguide single mode fiber. By utilizing the lag effect dry etching process, consisting nonuniform grooves with different widths depths is designed fabricated to maximize overlapping upward wave fiber mode. The measured waveguide-to-fiber 64% (-1.9 dB) transverse electric polarization achieved by directly defined on regular wafer.
In the paper, we review our work on heterogeneous III-V-on-silicon photonic components and circuits for applications in optical communication sensing. We elaborate integration strategy describe a broad range of devices realized this platform covering wavelength from 850 nm to 3.85 μm.
Fully exploiting the potential of silicon photonics requires high-performance active devices such as lasers, which can be monolithically integrated in a scalable way.However, direct bandgap III-V semiconductors exhibit large lattice mismatch and/or strongly differing thermal expansion coefficient with silicon.This makes monolithic integration on without introducing excessive defects material extremely difficult.The majority methods proposed thus far either are not compatible further low-cost...
We present both theoretical and experimental results of an ultracompact waveguide coupler that is capable highly efficient coupling light from strip waveguides to slot waveguides, vice versa. By optimizing the geometrical parameters, it possible achieve extremely low-loss coupling. A efficiency 97% has been obtained experimentally while keeping overall size down range below 10 mum. Further analysis shows proposed relatively high tolerance fabrication errors wavelength insensitive.
Nano-scale power splitters based on Si hybrid plasmonic waveguides are designed by utilizing the multimode interference (MMI) effect as well Y-branch structure. A three-dimensional finite-difference time-domain method is used for simulating light propagation and optimizing structural parameters. The 1 × 2 50:50 MMI splitter has a nano-scale size of only 650 nm 530 nm. also very small, i.e., about 900 600 fabrication tolerance analyzed it shown that waveguide width much larger than±50 broad...
On-chip optical interconnects still miss a high-performance laser monolithically integrated on silicon. Here, we demonstrate silicon-integrated InP nanolaser that operates at room temperature with low threshold of 1.69 pJ and large spontaneous emission factor 0.04. An epitaxial scheme to grow relatively thick nanowires (001) silicon is developed. The zincblende/wurtzite crystal phase polytypism the formed type II heterostructures are found promote lasing over wide wavelength range.
Hybrid plasmonic waveguides and directional couplers have been experimentally demonstrated. Using a direct measurement method, the propagation loss of 170 nm wide waveguide is measured to be 0.08 dB/μm at 1550 when thickness low-index region 56 nm. Ultra-compact based on such hybrid are demonstrated with gaps 140 nm, 185 235 290 The corresponding coupling lengths 1.55 μm, 2.2 3.2 4.8 respectively, which in very good agreement simulations. These ultra-compact devices can potentially used...
Personalized neoantigen cancer mRNA vaccines are promising candidates for precision medicine. However, the difficulty of identifying neoantigens heavily hinders their broad applicability. This study developed a universal strategy anti-tumor vaccine by harnessing "off-the-shelf" immunity to known antigens. First, model antigen ovalbumin (OVA) is used design. In vitro test indicated that this reprogrammed tumor cells can be recognized and killed OVA-specific cytotoxic T lymphocytes (CTLs)....
A one-dimensional grating serving both as a polarization beam splitter and vertical coupler for silicon photonic circuits is designed, fabricated, characterized. Bragg reflectors are employed to improve greatly the coupling efficiency. Over 50% efficiency polarizations achieved experimentally, extinction ratio between them also high ( -20 dB).
To enhance the functionality of standard silicon photonics platform and to overcome its limitations, in particular for light emission, ultrafast modulation, nonlinear applications, integration with novel materials is being investigated by several groups. In this paper, we will discuss, among others, waveguides ferroelectric such as lead zirconate titanate (PZT) barium (BTO), electro-optically active polymers, 2-D graphene III-V semiconductors through epitaxy. We discuss both technology...
InP thin films have been grown on InP/Si substrate by epitaxial lateral overgrowth (ELOG).The nature, origin and filtering of extended defects in ELOG layers from single double openings SiO 2 mask investigated.Whereas occasionally exhibit threading dislocations (TDs) at certain points coalescence, TDs are completely absent openings.Furthermore, stacking faults (SFs) observed both opening types originate not but possibly formation during early stages or simply propagate the seed layer through...
One of the common approaches to achieving vertical parallax for horizontal-parallax-only light-field display is introduce viewer-tracking method. A panoramic camera assembled in a 360 deg scanning system full-parallax demand this study, wherein image generation algorithm improved be sensitive multiple viewer positions, and tracking rendering are processed real time. The using determined able achieve smooth consecutive performance viewers range.
A novel hybrid plasmonic waveguide with nano-scale confinement, consisting of a metal layer separated from SOI nano-rib by thin silica has been realized. The loss 0.01dB/µm allows for ultra-high density photonic integration.
Bent Si sandwich nanowires are used and optimized to obtain an ultrasmall polarization-insensitive microring resonator (MRR). The nanowire has a low refractive index layer between two layers with high indexes. By optimizing the thickness of sandwiched layer, bent becomes nonbirefringent theoretically. designed relatively good fabrication tolerance. using such nanowire, MRR is designed.
Frequency combs, spectra of evenly-spaced narrow phase-coherent laser lines, have revolutionized precision measurements. On-chip frequency comb generators hold much promise for fully-integrated instruments time and metrology. While outstanding developments are being reported with Kerr, quantum cascade microring electro-optic the field high-resolution multiplexed gas-phase spectroscopy has remained inaccessible to such devices, because their large line spacing, small number usable intensity...