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Co‑packaged optics(CPO):status,challenges,and solutions

Frontiers of Optoelectronics 2023年第1期16卷 1-40页

作者： Min Tan Jiang Xu Siyang Liu Junbo Feng Hua Zhang Chaonan Yao Shixi Chen Hangyu Guo Gengshi Han Zhanhao Wen Bao Chen Yu He Xuqiang Zheng Da Ming Yaowen Tu Qiang Fu Nan Qi Dan Li Li Geng Song Wen Fenghe Yang Huimin He Fengman Liu Haiyun Xue Yuhang Wang Ciyuan Qiu Guangcan Mi Yanbo Li Tianhai Chang Mingche Lai Luo Zhang Qinfen Hao Mengyuan Qin School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyHong KongChina HKUST Fok Ying Tung Research Institute Guangzhou 511462China The Hong Kong University of Science and Technology(Guangzhou) Guangzhou 511462China Chongqing United Micro-Electronics Center(CUMEC) Chongqing 401332China Hisense Broadband Multimedia Technologies Co. Ltd.Qingdao 266000China Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China School of Microelectronics Xi’an Jiaotong UniversityXi’an 710049China Zhangjiang Laboratory Shanghai 201210China The State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China Huawei Technologies Co. Ltd.Shenzhen 440307China College of Computer National University of Defense TechnologyChangsha 410073China Institute of Computing Technology Chinese Academy of SciencesBeijing 100086China

Due to the rise of 5G,IoT,AI,and high-performance computing applications,datacenter trafc has grown at a compound annual growth rate of nearly 30%.Furthermore,nearly three-fourths of the datacenter trafc resides within *** conventional pluggable optics increases at a much slower rate than that of datacenter *** gap between application requirements and the capability of conventional pluggable optics keeps increasing,a trend that is *** optics(CPO)is a disruptive approach to increasing the interconnecting bandwidth density and energy efciency by dramatically shortening the electrical link length through advanced packaging and co-optimization of electronics and *** is widely regarded as a promising solution for future datacenter interconnections,and silicon platform is the most promising platform for large-scale *** international companies(e.g.,Intel,Broadcom and IBM)have heavily investigated in CPO technology,an inter-disciplinary research feld that involves photonic devices,integrated circuits design,packaging,photonic device modeling,electronic-photonic co-simulation,applications,and *** review aims to provide the readers a comprehensive overview of the state-of-the-art progress of CPO in silicon platform,identify the key challenges,and point out the potential solutions,hoping to encourage collaboration between diferent research felds to accelerate the development of CPO technology.

关键词： Co-packaged optics Silicon photonics High-performance computing Advanced packaging External laser Optical power delivery Co-simulation Standardization Transmitter Receiver

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Secrecy Performance Analysis of Heterogeneous networks With Unreliable Wireless Backhaul and Imperfect Channel Estimation

Secrecy Performance Analysis of Heterogeneous Networks With ...

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作者： Yin, Cheng Garcia-Palacios, Emiliano Xiao, Pei Sharma, Vishal Dobre, Octavia A. Duong, Trung Q. University of Surrey Institute for Communication Systems Home for 5GIC and 6GIC GuildfordGU2 7XH United Kingdom Queen's University Belfast School of Electronics Electrical Engineering and Computer Science BelfastBT7 1NN United Kingdom Memorial University Faculty of Engineering and Applied Science St. John'sNLA1B 3X5 Canada Kyung Hee University Department of Electronic Engineering yeonggi-do Yongin-si17140 Korea Republic of

Wireless backhaul is an economical and flexible alternative to wired backhaul, however, it experiences impairments. This research proposes a new secure heterogeneous system model with unreliable wireless backhaul and imperfect channel estimation over Nakagami-m fading channel. To improve the system secrecy performance, we propose three small-cell transmitter selection schemes under channel estimation imperfections and wireless backhaul impairments, namely Optimum Selection (OS), Sub-optimum Selection (SS) and Minimum-Eavesdropping Selection (MES). Novel closed-form expressions of secrecy outage probability (SOP) are derived for these three selection schemes in both practical and ideal scenarios. The novel theoretical analysis and simulation results show the impact of wireless backhaul uncertainties and channel estimation errors on system secrecy performance. In addition, we investigate how the number of small-cell transmitters affects the system secrecy performance. The asymptotic behaviour is provided to obtain insights into the system performance. The analytical derivations and asymptotic expressions are validated by Monte Carlo simulations. Our novel theoretical analysis can guide different physical layer security (PLS) designs. © 1967-2012 IEEE.

关键词： Transmitters

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Kerr effect in ultra-compact hybrid plasmonic metal-insulator-metal nano-focusing structure

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Chinese Optics Letters 2022年第3期20卷 106-110页

作者： Kejian Zhu Pengfei Sun F|engfei Xu Xingpeng Liu Tangyou Sun Haiou Li Zhiping Zhou State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Guangxi Key Laboratory of Precision Navigation Technology and Application Guilin University of Electronic TechnologyGuilin 541004China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China

Nano-focusing structures based on hybrid plasmonic waveguides are likely to play a key role in strong nonlinear optical *** the insertion loss is considerable,a significant nonlinear phase shift may be achieved by decreasing the nano-focusing device footprint and careful parameter ***,we study the Kerr effect in hybrid plasmonic waveguides by analyzing the mode effective area,energy velocity,and insertion ***,by utilizing plasmonics to manipulate the effective index and mode similarity,the TM mode is reflected and absorbed,while the TE mode passes through with relatively low propagation *** providing a deep understanding of hybrid plasmonic waveguides for nonlinear applications,we indicate pathways for their future optimization.

关键词： silicon photonics plasmonics nonlinear optics nano-focusing

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Integrated Sensing and communications Towards Proactive Beamforming in mmWave V2I via Multi-Modal Feature Fusion (MMFF)

arXiv

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arXiv 2023年

作者： Zhang, Haotian Gao, Shijian Cheng, Xiang Yang, Liuqing State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China Guangzhou511400 China Guangzhou511400 China Department of Electronic and Computer Engineering the Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology Hong Kong

The future of vehicular communication networks relies on mmWave massive multi-input-multi-output antenna arrays for intensive data transfer and massive vehicle access. However, reliable vehicle-to-infrastructure links require exact alignment between the narrow beams, which traditionally involves excessive signaling overhead. To address this issue, we propose a novel proactive beamforming scheme that integrates multi-modal sensing and communications via Multi-Modal Feature Fusion Network (MMFF-Net), which is composed of multiple neural network components with distinct functions. Unlike existing methods that rely solely on communication processing, our approach obtains comprehensive environmental features to improve beam alignment accuracy. We verify our scheme on the Vision-Wireless (ViWi) dataset, which we enriched with realistic vehicle drifting behavior. Our proposed MMFF-Net achieves more accurate and stable angle prediction, which in turn increases the achievable rates and reduces the communication system outage probability. Even in complex dynamic scenarios with adverse environment conditions, robust prediction results can be guaranteed, demonstrating the feasibility and practicality of the proposed proactive beamforming approach. Copyright © 2023, The Authors. All rights reserved.

关键词： Beamforming

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Electromagnetic Exposure Aware RSMA for Multiuser Massive MIMO Uplink 14

Electromagnetic Exposure Aware RSMA for Multiuser Massive MI...

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14th International Conference on Signal Processing systems, ICSPS 2022

作者： Jiang, Hanyu You, Li Elzanaty, Ahmed Wang, Jue Wang, Wenjin Gao, Xiqi Alouini, Mohamed-Slim Southeast University National Mobile Communications Research Laboratory Nanjing210096 China Institute for Communication Systems University of Surrey 5GIC & 6GIC GuildfordGU2 7XH United Kingdom School of Information Science and Technology Nantong University Nantong226019 China King Abdullah University of Science and Technology Thuwal Computer Electrical and Mathematical Science and Engineering Division Makkah Province Saudi Arabia

ISBN: (纸本)9798350336313

This paper investigates the rate-splitting multiple access (RSMA) transmission design for multiuser multiple-input multiple-output (MIMO) uplink with EM exposure constraints. Specifically, the transmit covariance matrices and decoding order are optimized at the users and BS, respectively, via utilizing statistical channel state information (CSI) to maximize the energy efficiency (EE). The problem is formulated as non-convex mixed integer program, which is divided into the equivalent two subproblems. We first handle the inner problem by adopting the minorization-maximization (MM) and Dinkelbachs methods. Then, a modified water-filling scheme is proposed to obtain the transmit covariance matrices with fixed decoding permutation. For the outer problem, a greedy approach is proposed to obtain the decoding permutation. Numerical results verify the effectiveness of the proposed EM exposure aware EE maximization scheme for uplink RSMA. © 2022 IEEE.

关键词： Energy efficiency

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A portable rotational sensor based on the dual-polarization fiber optic gyroscope

A portable rotational sensor based on the dual-polarization ...

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2021 Asia communications and Photonics Conference, ACP 2021

作者： Cao, Yuwen Zhu, Lanxin Zhou, Tong Yang, Chunxia Chen, Yanjun Li, Zhengbin State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Beijing100871 China School of Software and Microelectronics Peking University Beijing102600 China Youfu Technology Co. Ltd Hangzhou311200 China

A portable rotational sensor based on a modified dual-polarization fiber optic gyroscope is demonstrated, in which the excess relative intensity noise is effectively compensated achieving an enhanced sensitivity of 70... 详细信息

ISBN: (纸本)9781957171005

关键词： Gyroscopes

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Numerical Analyzation of Distributed Feedback Lasers with Different Phase Shift Structures

Numerical Analyzation of Distributed Feedback Lasers with Di...

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2021 Asia communications and Photonics Conference, ACP 2021

作者： Wang, Bo Zhou, Peiqi Wang, Xingjun State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics School of Electronics Engi-neering and Computer Science Peking University Beijing100871 China Institute of Microelectronics School of Electronics Engineering and Computer Science Peking University Beijing100871 China Frontier Science Center for Nano-optoelectronics Peking University Beijing100871 China Peking University Yangtze Delta Institute of Optoelectronics Nantong226010 China

We optimize phase shift structures of distributed feedback (DFB) lasers. For the multi-distributed phase shift laser, the output slope can reach up to 51.90% when the optimal cavity length is 2.2 mm. © Optica Pub...

ISBN: (纸本)9781957171005

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Surface Sampling, Vertex Manipulation and Surface Generation Based on WebGL Technologies

Surface Sampling, Vertex Manipulation and Surface Generation...

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International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT)

作者： Danail Runchevski Ustijana Rechkoska-Shikoska Rasim Salkoski Faculty of Communication Networks and Security University for Information Science and Technology “St. Paul the Apostle” Resen North Macedonia Faculty of Computer Science and Engineering University for Information Science and Technology “St. Paul the Apostle” Ohrid North Macedonia Faculty of Information Systems Visualisation Multimedia and Animation University for Information Science and Technology “St. Paul the Apostle” Ohrid North Macedonia

Surface sampling is a powerful technique used in computer graphics and visualization to gather data from 3D surfaces. Surface sampling is a process of collecting visual and tactile information from real world surfaces to serve as references for artistic creations. It allows artists to study and analyze the intricate details of surfaces, such as the roughness of tree bark, the smoothness of a pebble, or the subtle variations in fabric patterns. By examining surfaces up close, artists gain insights into the nuances that make each surface visually and texturally distinct. The solution we've developed operates seamlessly on both desktop and mobile devices, utilizing the functionalities of widely used web browsers. It eliminates the need for any software installations. Our achievement is founded on fully open-source solutions, allowing users to explore 3D models without any barriers.

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Planning Algorithm for Scientific Workflows: A Cost-Aware and Makespan Approach Based on Locust-Inspired Algorithm

SSRN

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SSRN 2023年

作者： Ala’anzy, Mohammed Alaa Othman, Mohamed Hanapi, Zurina Mohd Mohamed, Nader Ahmad, Zulfiqar Almaty040900 Kazakhstan Department of Communication Technology and Networks Universiti Putra Malaysia UPM Selangor D.E. Serdang43400 Malaysia Universiti Putra Malaysia UPM Selangor D.E. Serdang43400 Malaysia Department of Computer Science and Information Systems Pennsylvania Western University California PA15419 United States Department of Computer Science and Information Technology Hazara University Mansehra21300 Pakistan

Job scheduling of scientific workflows in cloud computing is an NP-hard optimisation problem. Efficiently scheduling the tasks in a workflow remains a challenging and open research problem that needs to be addressed. Scientific workflows are data-intensive;whereas, high powered computational resources are needed for handling them. Therefore, cloud computing is an impressive paradigm to handle such massive amounts of data effectively on a pay-as-you-use basis. In cloud computing, cost and execution time limitations are increasingly becoming significant concerns. The challenges of rising cost and time are particularly tough for scientific workflows since they need complex data processing through the communication network. In this paper, we propose a novel planning algorithm based on a locust-inspired algorithm for scientific workflow in a cloud environment for heterogeneous systems. This algorithm aims to optimise the scheduling and execution of tasks in such a way that it can be applied to a wide range of systems, with the goal of minimising overall costs and maximising efficiency. The proposed algorithm generates a task list based on the locust-inspired positioning of the tasks whereas the task list will consist the priority and balance tasks. This task list is used to submit tasks to the heterogeneous virtual machines, taking into account the queue list and the earliest finish times in order to optimise the scheduling of the tasks. Moreover, the child-parent tasks and the link latency are also considered in the scheduling of the tasks. In light to this, the makespan and financial costs have improved in accordance with this method, which has successfully demonstrated its effectiveness. The proposed algorithm is assessed using real-world dataset of data-exhaustive workflows and compared to state-of-the-art algorithms. The performance evaluation result demonstrates that our proposed algorithm could effectively reduce the cost and the makespan of the most of the invest

关键词： Cloud computing

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A switchable multi-wavelength EDFL using cascaded Sagnac fiber loops with mode differential delay line

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Optik 2021年 248卷 168182-168182页

作者： Ren, Fang Zhang, Jinyu Niu, Jingjing Lei, Xiao Zhang, Yanfei Yu, Jinyi School of Computer and Communication Engineering University of Science and Technology Beijing 100083 China Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Beijing100871 China

We propose and experimentally demonstrate a switchable multi-wavelength Erbium-doped fiber laser that employs cascaded weakly-coupled few-mode fiber (FMF) Sagnac fiber loops with mode differential delay line. A comb filter of multiple specific wavelengths is performed by incorporating a weakly-coupled FMF in cascaded Sagnac fiber loops. The incorporation of the weakly-coupled FMF is realized with all-fiber mode multiplexer/demultiplexer (MUX/DEMUX), which can simultaneously generate transversal LP01 and LP11 modes. The comb filter characteristics of cascaded Sagnac fiber loops are simulated and analyzed by Jones matrix. By adjusting the polarization controllers (PCs), the fiber laser can operate in single-, dual-, and triple-wavelength laser states around C band. The side mode suppression ratio is larger than 30.0 dB. Moreover, the laser output stabilities for single-, dual-, and triple-wavelength lasing are investigated in a range of over 30 min at room temperature. Experimental results indicate that this work has potential applications in WDM systems, sensing, and instrument testing. © 2021 Elsevier GmbH

关键词： Fiber lasers

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