Article
Multidisciplinary Sciences
Sulan Zhang, Junwei Chen, Zihao Liu, Xiaolin Wang, Chunhua Zhang, Jun Yang
Summary: This paper systematically elaborates the key theories and technologies of parallel computing for the Ternary Optical Computer (TOC). Through a programming platform, experiments are carried out to show the effectiveness and feasibility of the present theories and technologies. The results demonstrate the significant advantages of TOC over traditional computers in terms of clock cycles and computing resources.
Article
Green & Sustainable Science & Technology
Tianjun Feng, Keyi Liu, Chunyan Liang
Summary: An improved cellular automata model considering driving styles was proposed to analyze traffic flow characteristics and study traffic congestion's dissipation mechanism. The improved model introduced driving styles and two operation mechanisms (over-acceleration and speed adaptation) based on analyzing existing CA models and actual road conditions. The simulation result showed that the improved CA model is effective in dissipating traffic congestion and improving traffic capacity up to around 115% compared to the NaSch model.
Article
Computer Science, Hardware & Architecture
Zhehe Wang, Yunfu Shen, Shuang Li, Shuxin Wang
Summary: In this paper, a fine-grained fast parallel genetic algorithm based on a ternary optical computer is proposed. The algorithm, demonstrated by solving the traveling salesman problem, takes advantage of the parallelizability and power-efficient characteristics of ternary optical computers. The theoretical analysis and experimental results show that the proposed algorithm performs efficiently as the size of the problem increases, providing a theoretical foundation for the application of ternary optical computers in data-intensive computing.
JOURNAL OF SUPERCOMPUTING
(2023)
Article
Engineering, Multidisciplinary
Liang Chen, Jingsen Qi, Jin Shi
Summary: This paper presents an analysis and application method of ship traffic flow considering navigation rules in narrowing channel. It aims to provide a reasonable judgment for decision makers to improve navigation efficiency and ensure navigation safety. The relationship model between narrowing channel and ships is analyzed, and navigation rules are formulated for different positions of the channel. The mutual influence of ships at the narrowed position is also analyzed. A traffic flow model of narrowing channel with navigation safety distance is proposed using cellular automata algorithm, and its correctness is verified with measured data. The experimental results demonstrate that the method can effectively capture the characteristics of actual ship traffic flow in narrowing channels.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Computer Science, Artificial Intelligence
Yi Wang, Yangsheng Jiang, Yunxia Wu, Zhihong Yao
Summary: This paper proposes a control strategy for connected and automated vehicles (CAVs) that considers the driving behavior of CAV platoons. Numerical simulations show that this strategy effectively reduces traffic oscillations and congestion, and performs better than the existing strategy in improving traffic efficiency.
EXPERT SYSTEMS WITH APPLICATIONS
(2024)
Article
Physics, Multidisciplinary
Liling Zhu, Yandong Tang, Da Yang
Summary: This paper proposes a traffic flow model based on cellular automata for the traffic mixed by platoons and normal vehicles, and analyzes the influence of platoon market penetration and platoon size on road capacity, traffic congestion, and lane change frequency. The main conclusions drawn include the optimal platoon penetration and size that can maximize capacity, the effectiveness of platoons in alleviating traffic congestion, and the relationship between platoon penetration/size and lane change frequency.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Computer Science, Artificial Intelligence
Xuefeng Deng, Yi Shao, Jiaxin Song, Hui Wu
Summary: This article investigates the traffic flow formed by intelligent connected vehicles and proposes an improved cellular automata model, which significantly improves traffic congestion in the intelligent network environment.
PEERJ COMPUTER SCIENCE
(2022)
Article
Materials Science, Characterization & Testing
Weifan Zheng, Yang Cheng, Xiao Ma, Hao Sui, Jiye Zhang
Summary: In this study, a new cellular automata model of traffic flow is proposed by introducing the Lennard-Jones potential into the interaction of vehicles. The model considers the driver's decision-making process and the stochastic behavior of traffic flow. Through numerical simulation, the model successfully reproduces complex traffic phenomena.
NONDESTRUCTIVE TESTING AND EVALUATION
(2023)
Article
Optics
Yunfu Shen, Sulan Zhang, Zhehe Wang, Weimin Li
Summary: This paper proposes a parallel carry-free radix-4 MSD iterative division algorithm based on TOP, which can improve the efficiency of multi-bit parallel division. Experimental results show that compared to traditional radix-2 bitwise division, the required clock cycles are reduced by half.
OPTICS COMMUNICATIONS
(2021)
Article
Engineering, Civil
Futao Zhang, Yongsheng Qian, Junwei Zeng
Summary: This paper discusses the unique features of autonomous vehicles, the characteristics of actual slope grade on expressways, and the integer requirements for speed update in discrete cellular automata (CA). By introducing variable parameters related to vehicle position and gradient, the continuous deceleration efficiency of uphill is discretized, and the hybrid traffic flow CA model is improved based on the principle of safety distance for slope bottlenecks. The simulation results demonstrate that the improved model can simulate the unique traffic flow phenomenon caused by changing slope conditions. Furthermore, autonomous vehicles can effectively alleviate traffic congestion on upslopes in non-free flow areas.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2023)
Article
Physics, Multidisciplinary
Tim Vranken, Benjamin Sliwa, Christian Wietfeld, Michael Schreckenberg
Summary: The paper introduces a cellular automaton design for simulating automated and human vehicle agents on single lane highway sections. It shows that autonomous vehicles are expected to increase road capacity, reduce traffic congestion, and improve traffic synchronization. Additionally, potential issues with human-robot interaction that could lead to accidents were identified and addressed.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Physics, Multidisciplinary
Keyi Liu, Tianjun Feng
Summary: Autonomous driving technology is rapidly advancing, leading to a heterogeneous traffic flow dominated by intelligent controlled vehicles (ICV) and human driving vehicles (HDV). The study shows that the penetration rate of ICV has a significant impact on traffic capacity, with an increase of 23.4% to 62.5% compared to homogeneous HDV flow. As the ICV penetration rate increases, both the lane-changing frequency and congestion level decrease.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Article
Computer Science, Hardware & Architecture
Melika Amiri, Massoud Dousti, Majid Mohammadi
Summary: In this study, a carry-save adder (CSA) is proposed in Quantum-dot cellular automata (QCA) technology, which shows superior performance over existing ripple carry adders in terms of speed. The proposed QCA-based adder has higher speed and lower energy consumption, and significantly improves manufacturability. Moreover, the proposed designs occupy smaller area, with the proposed full adder-subtractor occupying only 0.62 μm2.
JOURNAL OF SUPERCOMPUTING
(2023)
Review
Transportation
Junfang Tian, Chenqiang Zhu, Rui Jiang, Martin Treiber
Summary: Cellular automaton (CA) approach is an important theoretical framework in studying complex system behavior, with high computation efficiency. The development of CA models, especially in reproducing synchronized flow in traffic, has been a rapid and significant area of research in recent years.
TRANSPORTMETRICA A-TRANSPORT SCIENCE
(2021)
Article
Physics, Multidisciplinary
Dian Jing, Enjian Yao, Rongsheng Chen
Summary: This study proposes a modified cellular automata model to describe the movement characteristics of mixed traffic flow, particularly around accident zones. By simulating the impact of vehicles with cooperative adaptive cruise control at different penetration rates, the research finds that increasing the number of CAVs can efficiently alleviate the impact of accidents.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)