A5043629925- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Orbital Angular Momentum in Optics
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Plasmonic and Surface Plasmon Research
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Near-Field Optical Microscopy
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- Photonic Crystals and Applications
- Optical Wireless Communication Technologies
- Quantum Information and Cryptography
- Metamaterials and Metasurfaces Applications
- Quantum optics and atomic interactions
- Advanced Optical Sensing Technologies
- Plant Reproductive Biology
- Solid State Laser Technologies
- Photonic Crystal and Fiber Optics
- Optical Polarization and Ellipsometry
- Semiconductor Quantum Structures and Devices
- Magneto-Optical Properties and Applications
- Optical Coatings and Gratings
Sun Yat-sen University
2016-2025
Third People's Hospital of Yunnan Province
2025
Dali University
2025
State Key Laboratory of Optoelectronic Materials and Technology
2014-2024
Hefei University
2023-2024
Zhejiang University
2023
University of British Columbia
2023
Collaborative Innovation Center of Advanced Microstructures
2020
Nanjing University
2020
South China Normal University
2019
A Twist of Light The angular momentum photons can be used to encode and transmit information. Cai et al. (p. 363 ) developed a method for generating emitting controllable orbital states light from reconfigurable scalable silicon photonic chip. Using micro-ring resonators embedded with gratings allowed the imprinting optical on propagating in whispering gallery modes resonator. may enable large-scale integration vortex emitters complementary metal-oxide–semiconductor-compatible chips.
The coherent transmission technology using digital signal processing and advanced modulation formats, is bringing networks closer to the theoretical capacity limit of optical fibres, Shannon limit. in-phase quadrature electro-optic modulator that encodes information on both amplitude phase light, one underpinning devices for technology. Ideally, such should feature low loss, drive voltage, large bandwidth, chirp compact footprint. However, these requirements have been only met separate...
Quantum Key Distribution (QKD) provides an efficient means to exchange information in unconditionally secure way. Historically, QKD protocols have been based on binary signal formats, such as two polarisation states, and the transmitted efficiency of quantum key is intrinsically limited 1 bit/photon. Here we propose experimentally demonstrate, for first time, a high-dimensional protocol space division multiplexing multicore fiber using silicon photonic integrated lightwave circuits. We...
We report, to our knowledge, the first dual-polarization thin-film lithium niobate coherent modulator for next-generation optical links with sub-1-V driving voltage and 110-GHz bandwidth, enabling a record single-wavelength 1.96-Tb/s net data rate ultrahigh energy efficiency.
The ability to measure the orbital angular momentum (OAM) distribution of vortex light is essential for OAM applications. Although there have been many studies on measurement modes, it difficult quantitatively and instantaneously power among different let alone phase them. In this work, we propose an complex spectrum analyzer that enables simultaneous measurements distributions modes by employing rotational Doppler effect. original mode mapped electrical beat signals using a photodetector....
Space-division multiplexing (SDM), as a main candidate for future ultra-high capacity fibre-optic communications, needs to address limitations its scalability imposed by computation-intensive multi-input multi-output (MIMO) digital signal processing (DSP) required eliminate the crosstalk caused optical coupling between multiplexed spatial channels. By exploiting unique propagation characteristics of orbital angular momentum (OAM) modes in ring core fibres (RCFs), system that combines SDM and...
Abstract High-speed polarization management is highly desirable for many applications, such as remote sensing, telecommunication, and medical diagnosis. However, most of the approaches rely on bulky optical components that are slow to respond, cumbersome use, sometimes with high drive voltages. Here, we overcome these limitations by harnessing photonic integrated circuits based thin-film lithium niobate platform. We successfully realize a portfolio devices essential functionalities,...
The lithium niobate on insulator devices confine the light field to submicron size in monocrystalline niobate, achieve ultra-strong electro-optical interaction and nonlinear optical interaction, thus extend frontiers of photonic research past decade. Such are manufactured using nano-fabrication technology over thin-film wafer, which usually stands a silica layer above substrate material, including low-loss waveguides, modulators, domain engineered structures, high-Q microring resonators...
Spatial modes have received substantial attention over the last decades and are used in optical communication applications. In fiber-optic communications, employed linearly polarized phase vortex carrying orbital angular momentum can be synthesized by fiber vector eigenmodes. To improve transmission capacity miniaturize system, straightforward eigenmode multiplexing generation of fiber-eigenmode-like polarization vortices (vector modes) using photonic integrated devices interest. Here, we...
Harnessing the orbital angular momentum (OAM) of light is an appealing approach to developing photonic technologies for future applications in optical communications and high-dimensional quantum key distribution (QKD) systems.An outstanding challenge widespread uptake OAM resource its efficient generation.In this work we design a new device that can directly emit OAM-carrying beam from low-cost semiconductor laser.By fabricating micro-scale spiral phase plates within aperture vertical-cavity...
We propose and demonstrate a scalable mode division multiplexing scheme based on orbital angular momentum modes in ring core fibers. In this scheme, the high-order groups of fiber are sufficiently de-coupled by large differential effective refractive index so that multiple-input multiple-output (MIMO) equalization is only used for crosstalk within each group. design fabricate graded-index supports 5 with low inter-mode-group coupling, small intra-mode-group group delay, velocity dispersion...
Thin-film lithium-niobate-on-insulator (LNOI) is a very attractive platform for optical interconnect and nonlinear optics. It essential to enable lithium niobate photonic integrated circuits with low power consumption. Here we present an edge-coupling Mach–Zehnder modulator on the fiber-chip coupling loss of 0.5 dB/facet, half-wave voltage <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi...
Lithium niobate on insulator (LNOI) is a unique platform for integrated photonic applications and especially high-efficiency nonlinear frequency converters because of the strong optical field confinement. In this work, we fabricated 6-mm-long periodically poled LNOI ridge waveguide with an optimized duty cycle (50:50) using active domain structure monitoring method. The performance single-pass second-harmonic generation difference-frequency in nanophotonic was characterized, normalized...
A high-flux entangled-photon source is a key resource for quantum optical study and application. Here, it realized in lithium niobate on isolator (LNOI) chip, with 2.79 \ifmmode\times\else\texttimes\fi{} ${10}^{11}$ Hz/mW photon-pair rate 1.53 ${10}^{9}$ Hz/(nm mW) spectral brightness. These data are boosted by over 2 orders of magnitude compared existing technologies. 160-nm-broad bandwidth engineered eight-channel multiplexed energy-time entanglement. Harnessed high-extinction-frequency...
Orbital angular momentum (OAM), one fundamental property of light, has been great interest over the past decades. An ideal OAM generator, fully compatible with existing physical dimensions (wavelength and polarization) would offer distinct features broadband, polarization diversity, ultra-compact footprint. Here, we propose, design, fabricate, demonstrate an chip-scale broadband diversity generator on a silicon platform 3.6 × μm2 The chip is formed by introducing subwavelength surface...
Applications of quantum walks can depend on the number, exchange symmetry and indistinguishability particles involved, underlying graph structures where they move. Here, we show that silicon photonics, by exploiting an entanglement-driven scheme, realize with full control over all these properties in one device. The device implements entangled two-photon any five-vertex graph, continuously tunable particle indistinguishability. We how this simulates single-particle larger graphs, size...
Increasing data traffic and bandwidth-hungry applications require electro-optic modulators with ultra-wide modulation bandwidth for cost-efficient optical networks. Thus far, integrated solutions have emerged to provide high low energy consumption in compact sizes. Here, we review the design guidelines delicate structures higher bandwidth, applying them lumped-element traveling-wave electrodes. Additionally, focus on candidate material platforms potential ultra-wideband systems. By comparing...
Thin-film lithium niobate (TFLN) photonic integrated circuits (PICs) have emerged as a promising photonics platform for the optical communication, microwave photonics, and sensing applications. In recent years, rapid progress has been made on development of low-loss TFLN waveguides, high-speed modulators, various passive components. However, integration laser sources is still one main hurdles in path toward fully PICs. Here, we present heterogeneous InP-based semiconductor lasers PIC. The...
To keep up with the growing bandwidth demands, photonic integrated circuits (PICs) have been widely employed in various application scenarios where high capacity and high-bandwidth-density interconnects are required. However, it is challenging to scale PICs toward future petabit per second requirements. We study scalability bottlenecks of terms guiding materials, dense integration approaches, wide-band optical sources, high-efficiency tunable modulation devices. also look for possible...
Abstract Optical vortex beams carrying orbital angular momentum (OAM) have received great attention since the 1990s. In particular, OAM offers an additional degree of freedom, thus, enabling boosting data transmission capacity in communication systems. One major challenges OAM‐based lies multiplexing via a kind effective, compact, and flexible approach. Here, novel approach to achieve generation combination by pre‐engineered reflective metasurface chip is demonstrated. Compared traditional...
We design and fabricate a low-loss silicon photonic two-dimensional grating coupler that serves to couple light between standard single-mode fibers waveguides in the silicon-on-insulator platform split both orthogonal polarization states. The efficiency of fabricated device is enhanced by backside metal mirror reaches record value -1.8 dB with 1 bandwidth 32 nm around 1550 nm. demonstrated coupling 2.2 better than conventional without mirror.
Optical modulators have been and will continue to be essential devices for energy- cost-efficient optical communication networks. Heterogeneous silicon lithium niobate demonstrated promising performances of low loss, drive voltage, large modulation bandwidth. However, DC bias drift is a major drawback using as the active electro-optic material. Here, we demonstrate high-speed bias-drift-free Mach–Zehnder based on heterogeneous platform. The combine stable thermo-optic biases in ultra-fast...
Abstract Entanglement is a counterintuitive feature of quantum physics that at the heart technology. High-dimensional states offer unique advantages in various information tasks. Integrated photonic chips have recently emerged as leading platform for generation, manipulation and detection entangled photons. Here, we report silicon chip uses interferometric resonance-enhanced photon-pair sources, spectral demultiplexers high-dimensional reconfigurable circuitries to generate, manipulate...