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Hybrid-integrated high-performance microwave photonic filter with switchable response

Photonics Research 2021年第8期9卷 1569-1580页

作者： YUANSHENG TAO HAOWEN SHU XINGJUN WANG MING JIN ZIHAN TAO FENGHE YANG JINGBO SHI JUN QIN State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Frontier Science Center for Nano-optoelectronics Peking UniversityBeijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Peng Cheng Laboratory Shenzhen 518055China

The integrated microwave photonic filter(MPF),as a compelling candidate for next-generation radio-frequency(RF)applications,has been widely investigated for ***,most integrated MPFs reported thus far have merely incorporated passive photonic components onto a chip-scale platform,while all necessary active devices are still bulk and *** few attempts to higher photonic integration of MPFs have been executed,the achieved filtering performances are fairly limited,which impedes the pathway to practical ***,we demonstrate,for the first time to our knowledge,an all-integrated MPF combined with high filtering performances,through hybrid integration of an In P chip-based laser and a monolithic silicon photonic circuit consisting of a dual-drive Mach–Zehnder modulator,a high-Q ring resonator,and a *** integrated MPF exhibits a high spectral resolution as narrow as 360 MHz,a wide-frequency tunable range covering the S-band to K-band(3 to 25 GHz),and a large rejection ratio of>40 d ***,the filtering response can be agilely switched between the bandpass and band-stop function with a transient respond time(48μs).Compared with previous MPFs in a similar integration level,the obtained spectral resolution in this work is dramatically improved by nearly one order of magnitude,while the valid frequency tunable range is broadened more than twice,which can satisfy the essential filtering requirements in actual RF *** a paradigm demonstration oriented to real-world scenarios,high-resolution RF filtering of realistic microwave signals aiming for interference rejection and channel selection is *** work points out a feasible route to a miniaturized,high-performance,and cost-effective MPF leveraging hybrid integration approach,thus enabling a range of RF applications from wireless communication to radar toward the higher-frequency region,more compact size,and lower power consumption.

关键词： filter modulator switched

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Deep Neural Network Enhanced Chip-on-Board Hybrid-Packaged Photonic-Electrical Silicon Transceiver for High-speed Optical Interconnects

Deep Neural Network Enhanced Chip-on-Board Hybrid-Packaged P...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Jun Qin Qipeng Yang Changhao Han Yan Zhou Yunhao Zhang Yichen WU Yu Sun Junde Lu Siming Liu Yueqin Li Jian Sun Miao Min Weiwei Hu Zhixue He Lei Wang Shaohua Yu Haowen Shu Xingjun Wang Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science and Technology University Beijing China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing China Department of Electrical and Computer Engineering University of California Santa Barbara CA USA Peking University Yangtze Delta Institute of Optoelectronics Nantong China Peng Cheng Laboratory Shenzhen China State Key Laboratory of Information Photonics and Optical Communications BUPT Beijing China

We explore implementing a multilevel deep neural network to enhance the performance of a 4-channel photonic-electrical hybrid-packaged silicon transceiver. Stable transmission and reception of 150 Gbps/λ PAM4 signals... 详细信息

ISBN: (纸本)9798350369311

关键词： Electric potential Optical interconnections System performance Artificial neural networks Transceivers Silicon Electro-optical waveguides Photonics

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Nanoseconds CDR Enabled by Clock Distribution and Protection Sequence Insertion in Optical

Nanoseconds CDR Enabled by Clock Distribution and Protection...

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OptoElectronics and communications Conference, OECC

作者： Yisong Zhao Changsheng Yang Daohang Dang Yuanzhi Guo Shikui Shen Ran Wen Bin Chen Bingli Guo Chuanchuan Yang Nan Hua Xuwei Xue Shanguo Huang State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing China China Unicom Research Institute Beijing China School of Computer Science and Information Engineering Hefei University of Technology Hefei China The State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Beijing China Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University Beijing China

The scheme combining clock distribution and protection sequence insertion from the network perspective is proposed and experimentally investigated to implement a 3.1 nanoseconds clock and data recovery in optical swit...

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Resource Allocation in UAV-NOMA communication Systems Based on Proportional Fairness

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Journal of communications and Information networks 2020年第2期5卷 111-120页

作者： Hui Zhang Baoji Wang Chen Chen Xiang Cheng Hang Li State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Shanghai Institute of Microsystem and Information Tech-nology Chinese Academy of SciencesShanghai 200050China Data-Driven Information System Laboratory Shenzhen Re-search Institute of Big DataShenzhen 518172China

This paper investigates the power allocation problem in non-orthogonal multiple access(NOMA)integrated unmanned aerial vehicle(UAV)communication *** particular,we propose a novel resource allocation scheme to increase the transmission rate of the users that have relatively worse channel state information,while reducing the sum rate *** solve this problem efficiently,we decouple the optimization problem into three ***,we solve the problem of user pairing and subchannel ***,the optimum power proportional factor is derived to allocate transmit power among different users on the same *** last,different subchannels are allocated with appropriate power to improve the performance of the *** results show that the proposed scheme can enjoy a better performance than the benchmark methods since it can achieve a proper trade-off between the system sum rate and the proportional fairness.

关键词： UAV communications NOMA power allo-cation proportional fairness

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Offloading safety- And mission-critical tasks via unreliable connections 32

Offloading safety- And mission-critical tasks via unreliable...

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32nd Euromicro Conference on Real-Time Systems, ECRTS 2020

作者： Schönberger, Lea Chen, Kuan-Hsun Youssef, Hazem Wietfeld, Christian Chen, Jian-Jia von der Brüggen, Georg Sliwa, Benjamin Venkatapathy, Aswin Karthik Ramachandran ten Hompel, Michael Design Automation for Embedded Systems Group Faculty of Computer Science TU Dortmund University Germany Material Handling and Warehousing Faculty of Mechanical Engineering TU Dortmund University Germany Communication Networks Institute Faculty of Electrical Engineering TU Dortmund University Germany

ISBN: (纸本)9783959771528

For many cyber-physical systems, e.g., IoT systems and autonomous vehicles, offloading workload to auxiliary processing units has become crucial. However, since this approach highly depends on network connectivity and responsiveness, typically only non-critical tasks are offloaded, which have less strict timing requirements than critical tasks. In this work, we provide two protocols allowing to offload critical and non-critical tasks likewise, while providing different service levels for non-critical tasks in the event of an unsuccessful offloading operation, depending on the respective system requirements. We analyze the worst-case timing behavior of the local cyber-physical system and, based on these analyses, we provide a sufficient schedulability test for each of the proposed protocols. In the course of comprehensive experiments, we show that our protocols have reasonable acceptance ratios under the provided schedulability tests. Moreover, we demonstrate that the system behavior under our proposed protocols is strongly dependent on probability of unsuccessful offloading operations, the percentage of critical tasks in the system, and the amount of offloaded workload. © Lea Schönberger, Georg von der Brüggen, Kuan-Hsun Chen, Benjamin Sliwa, Hazem Youssef, Aswin Ramachandran, Christian Wietfeld, Michael ten Hompel, and Jian-Jia Chen.

关键词： Cyber Physical System

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Heart Disease Detection using Quantum Computing and Partitioned Random Forest Methods

arXiv

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arXiv 2022年

作者： Heidari, Hanif Hellstern, Gerhard Murugappan, Murugappan School of Mathematics and Computer Science Damghan University Damghan Iran Center of Finance Cooperative State University Baden‐Württemberg Stuttgart Germany Research Lab Department of Electronics and Communication Engineering Kuwait College of Science and Technology Block 4 Doha13133 Kuwait Department of Electronics and Communication Engineering School of Engineering Vels Institute of Sciences Technology and Advanced Studies Chennai600117 India Universiti Malaysia Perlis Perlis Arau02600 Malaysia

Heart disease morbidity and mortality rates are increasing, which has a negative impact on public health and the global economy. Early detection of heart disease reduces the incidence of heart mortality and morbidity. Recent research has utilized quantum computing methods to predict heart disease with more than 5 qubits and are computationally intensive. Despite the higher number of qubits, earlier work reports a lower accuracy in predicting heart disease, have not considered the outlier effects, and requires more computation time and memory for heart disease prediction. To overcome these limitations, we propose hybrid random forest quantum neural network (HQRF) using a few qubits (two to four) and considered the effects of outlier in the dataset. Two open-source datasets, Cleveland and Statlog, are used in this study to apply quantum networks. The proposed algorithm has been applied on two open-source datasets and utilized two different types of testing strategies such as 10-fold cross validation and 70-30 train/test ratio. We compared the performance of our proposed methodology with our earlier algorithm called hybrid quantum neural network (HQNN) proposed in the literature for heart disease prediction. HQNN and HQRF outperform in 10-fold cross validation and 70/30 train/test split ratio, respectively. The results show that HQNN requires a large training dataset while HQRF is more appropriate for both large and small training dataset. According to the experimental results, the proposed HQRF is not sensitive to the outlier data compared to HQNN. Compared to earlier works, the proposed HQRF achieved a maximum area under the curve (AUC) of 96.43% and 97.78% in predicting heart diseases using Cleveland and Statlog datasets, respectively with HQNN. The proposed HQRF is highly efficient in detecting heart disease at an early stage and will speed up clinical *** Codes 92C50, 68P30, 68Q87, 68T20, 68Q12 © 2022, CC BY.

关键词： Forecasting

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Adaptive beamforming for optical wireless communication via fiber modal control

arXiv

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arXiv 2023年

作者： Li, Chao Zhang, Yiwen Yan, Xinda Wang, Yuzhe Zhang, Xuebing Cui, Jian Zhu, Lei Li, Juhao Li, Zilun Yu, Shaohua Cao, Zizheng Koonen, A.M.J. Hsu, Chia Wei Peng Cheng Laboratory Guangdong Shenzhen518055 China Ming Hsieh Department of Electrical and Computer Engineering University of Southern California Los AngelesCA90089 United States Institute for Photonic Integration Department of Electrical Engineering Eindhoven University of Technology Eindhoven5612 AZ Netherlands State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Beijing100871 China Division of Vascular Surgery The First Affiliated Hospital Sun Yat-sen University Guangdong Guangzhou510080 China

High-speed optical wireless communication can address the exponential growth in data traffic. Adaptive beamforming customized for the target location is crucial, but existing solutions such as liquidcrystal spatial light modulators and microelectromechanical systems require costly micro/nano manufacturing, delicate alignment, and a high degree of mechanical stability. These challenges reflect the fragility of integrating a fiber network with micro/nano mechanical or photonic systems. Here, we realize low-cost, low-loss, and fiber-compatible beamforming and continuous beam steering through controlled bending of a multi-mode fiber that modifies its modal coupling, and use it to enable flexible optical wireless communication at 10 Gb/s. By using the fiber modal coupling as degrees of freedom rather than an impediment, this approach offers a promising solution for flexible and cost-effective optical wireless communication networks. © 2023, CC BY-NC-SA.

关键词： Fibers

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A Low-Fabrication-Temperature Erbium-Based Waveguide Amplifier

A Low-Fabrication-Temperature Erbium-Based Waveguide Amplifi...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Bo Wang Xingjun Wang Department of Electronics School of Electronics Engineering and Computer Science State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Beijing China Frontier Science Center for Nano-Optoelectronics Peking University Beijing China Peking University Yangtze Delta Institute of Optoelectronics Nantong China Peng Cheng Laboratory Shenzhen China

In recent years, with the continuous development of silicon photonics technology, more and more optoelectronic devices have integrated into silicon-base platform. However, the inter-device transmission and coupling loss is serious, which results in an urgent need for on-chip waveguide amplifiers to compensate for the loss. Erbium silicate is an ideal gain material because of its extremely high Er 3+ concentration (10 22 cm −3 ). Nevertheless, Erbium silicate must be annealed above 1000 °C to activate the Er 3+ , which would damage other on-chip optoelectronic components. To solve this problem, here, we report a low-fabrication-temperature erbium-based waveguide amplifier. Erbium-ytterbium silicate and Bi 2 O 3 mixed film is used as gain material, which can activate the Er 3+ at 600 °C annealing condition. The waveguide amplifier was fabricated by lift-off process due to that the mixed film is hard to etch. Finally, 2 dB signal enhancement has been observed at 1550nm. This work shows that the proposed material has great potential for on-chip waveguide amplifier.

关键词： Optical fiber amplifiers Optical losses Annealing Stimulated emission Erbium-doped fiber amplifiers Propagation losses System-on-chip

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Rapid Maize Seedling Detection Based on Receptive-Field and Cross-Dimensional Information Interaction

Rapid Maize Seedling Detection Based on Receptive-Field and ...

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IEEE International Conference on Systems, Man and Cybernetics

作者： Fengqi Hao Shulei Zhu Dexin Ma Xiangjun Dong Hoiio Kong Xia Liu Chunhua Mu Key Laboratory of Computing Power Network and Information Security Ministry of Education Shandong Computer Science Center (National Supercomputer Center in Jinan) Qilu University of Technology (Shandong Academy of Sciences) Jinan China Faculty of Data Science City University of Macau Macau China Shandong Provincial Key Laboratory of Computer Networks Shandong Fundamental Research Center for Computer Science Jinan China Communication College Qingdao Agricultural University Qingdao China National Engineering Laboratory of Wheat and Maize/Key Laboratory of Biology and Genetic Improvement of Maize in Northern Yellow-huai River Plain Ministry of Agriculture Maize Research Institute Shandong Academy of Agricultural Sciences Jinan China

ISBN: (数字)9781665410205

ISBN: (纸本)9781665410212

The seedling stage is important in the growth and development of maize, and it is also a critical period that affects maize yield and quality. Accurately recognizing this stage of maize is challenging, as current maize seedling detection methods struggle with small sizes and complex environments. This paper proposes a rapid maize seedling detection method that emphasizes spatial feature extraction in the receptive field and cross-dimensional interaction—receptive field triplet attention YOLO (RFT-YOLO). First, we design a convolutional module for cross-dimensional information interaction within the receptive field. Second, we introduce an advanced selective fusion network, which boosts the multi-scale fusion capability of small object features while reducing the GFLOPs of the model. Additionally, we employ Inner-IoU to diminish sensitivity to positional biases of small objects and expedite the convergence of the loss function. Finally, we create a dataset of maize seedlings to conduct our experiments. Experimental results demonstrate that the RFT-YOLO significantly enhances performance, reducing the number of parameters by 35.3% and GFLOPs by 14.24%, compared to the baseline model. Moreover, the mean average precision (mAP) improves from 89.6% to 91.5%. These improvements confirm the model's effectiveness in detecting maize seedlings.

关键词： YOLO Sensitivity Accuracy Semantics Feature extraction Complexity theory Data mining Cybernetics Convergence

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A performance-based tabular approach for joint systematic improvement of risk control and resilience applied to telecommunication grid, gas network, and ultrasound localization system

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Environment Systems and Decisions 2021年第2期41卷 286-329页

作者： Häring, Ivo Fehling-Kaschek, Mirjam Miller, Natalie Faist, Katja Ganter, Sebastian Srivastava, Kushal Jain, Aishvarya Kumar Fischer, Georg Fischer, Kai Finger, Jörg Stolz, Alexander Leismann, Tobias Hiermaier, Stefan Carli, Marco Battisti, Federica Makri, Rodoula Celozzi, Giuseppe Belesioti, Maria Sfakianakis, Evangelos Agrafioti, Evita Chalkidou, Anastasia Papadakis, George Fuggini, Clemente Bolletta, Fabio Neri, Alberto Giunta, Guiseppe Scheithauer, Hermann Höflinger, Fabian Schott, Dominik J. Schindelhauer, Christian Köhler, Sven Linkov, Igor Fraunhofer Institute for High-Speed Dynamics Ernst-Mach-Institut EMI Freiburg Germany Department of Engineering Roma Tre University Rome Italy Institute of Communication and Computer Systems (ICCS) of the National Technical University of Athens Athens Greece Ericsson Telecomunicazioni S.P.A. Pagani SA Italy Hellenic Telecommunications Organization (OTE) S.A. Maroussi Athens Greece Gap Analysis Crete Greece RINA Consulting Rozzano Italy Leonardo Company Rome Italy ENI San Donato Milanese Italy Hahn-Schickard Villingen-Schwenningen Germany Department of Microsystems Engineering IMTEK University of Freiburg Freiburg Germany Computer Networks and Telematics University of Freiburg Freiburg Germany Engineering Research and Development Center US Army Corps of Engineers Concord MA United States

Organizational and technical approaches have proven successful in increasing the performance and preventing risks at socio-technical systems at all scales. Nevertheless, damaging events are often unavoidable due to a wide and dynamic threat landscape and enabled by the increasing complexity of modern systems. For overall performance and risk control at the system level, resilience can be a versatile option, in particular for reducing resources needed for system development, maintenance, reuse, or disposal. This paper presents a framework for a resilience assessment and management process that builds on existing risk management practice before, during, and after potential and real events. It leverages tabular and matrix correlation methods similar as standardized in the field of risk analysis to fulfill the step-wise resilience assessment and management for critical functions of complex systems. We present data needs for the method implementation and output generation, in particular regarding the assessment of threats and the effects of counter measures. Also included is a discussion of how the results contribute to the advancement of functional risk control and resilience enhancement at system level as well as related practical implications for its efficient implementation. The approach is applied in the domains telecommunication, gas networks, and indoor localization systems. Results and implications are further discussed. © 2021, The Author(s).

关键词： engineering of resilience ISO 31000 Joint risk and resilience analysis and management process Resilience dimensions Socio-technical system System performance function Tabular and matrix approach

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