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37th IEEE International system-on-Chip Conference, SOCC 2024

作者： Syafalni, Infall Firdaus, Mohamad Imam Sutisna, Nana Adiono, Trio Juhana, Tutun Mulyawan, Rahmat Bandung Institute of Technology School of Electrical Engineering and Informatics Indonesia University Center of Excellence on Microelectronics Bandung Institute of Technology Indonesia The University of Tokyo System Design Laboratory School of Engineering Tokyo Japan

ISBN: (纸本)9798350377569

In this paper, we propose a novel dual-mode Q-learning hardware accelerator (DMQ) for shortest path and coverage area problems. The hardware accelerator design uses only an agent to tackle multiple modes, in this case, shortest path and coverage area problems for mobile robots. The work proposes a modified policy generator that supports two reward functions for the shortest path and coverage area. The coverage area mode has 4 × state spaces than that of the shortest path mode. We also explore some policy generators such as decreasing epsilon and greedy for the dual-mode Q-learning accelerator. Experimental results show that by using a greedy policy generator the learning rate of an agent is faster for both problems. Moreover, the hardware architecture requires only 1199 LUTs, 4 LUTRAMs, and 6 BRAMs for the dual-mode functions. With a throughput of 185.63 MHz, the proposed work outperforms other methods up to 13 × in energy efficiency. The proposed work is useful for disaster recovery, smart navigation, and other artificial intelligence applications. © 2024 IEEE.

关键词： Mobile robots

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A topological optical parametric amplifier on a CMOS-chip

A topological optical parametric amplifier on a CMOS-chip

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2023 Optica Nonlinear Optics Topical Meeting, NLO 2023

作者： Sohn, Byoung-Uk Huang, Yue-Xin Choi, Ju Won Chen, George F.R. Ng, Doris K.T. Yang, Shengyuan A. Tan, Dawn T.H. Photonics Devices and System Group Singapore University of Technology and Design Singapore487372 Singapore Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore487372 Singapore Institute of Microelectronics A*STAR 2 Fusionopolis Way #08-02 Innovis Tower Singapore138634 Singapore

ISBN: (纸本)9781957171234

We demonstrate 12.8dB optical parametric gain using a topological photonic waveguide based on the Su-Schrieffer-Heeger model with a domain wall, implemented on ultra-silicon-rich nitride. The Kerr nonlinearity is observed to induce delocalization in the topological mode. Optica Nonlinear Optics Topical Meeting 2023 © Optica Publishing Group 2023 © 2023 The Author(s)

关键词： Optical parametric amplifiers

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Intensity Modulated Direct Detection Data Transmission over 100km of Optical Fiber using a Microresonator Kerr Frequency Comb Source

Intensity Modulated Direct Detection Data Transmission over ...

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2023 Optica Nonlinear Optics Topical Meeting, NLO 2023

作者： Chen, George F.R. Chia, Xavier X. Ong, Kenny Y.K. Xing, Peng Tan, Dawn T.H. Photonics Devices and System Group Singapore University of Technology and Design 8 Somapah Rd Singapore487372 Singapore Institute of Microelectronics A*STAR 2 Fusionopolis Way #08-02 Innovis Tower Singapore138634 Singapore

ISBN: (纸本)9781957171234

We demonstrate microresonator frequency comb-based transmission of intensity-modulated-direct-detection data over 100km of fiber, at 30Gbps data rate in a single comb line. This represents the longest fiber reach demonstrated using Kerr frequency combs to date. Optica Nonlinear Optics Topical Meeting 2023 © Optica Publishing Group 2023 © 2023 The Author(s)

关键词： Microresonators

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Topologically Protected Wavelength Conversion in a Photonic Valley Hall Insulator

Topologically Protected Wavelength Conversion in a Photonic ...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Sohn, Byoung-Uk Choi, Ju Won Chen, George F.R. Gao, Hongwei Mitchell, William J. Ng, Doris K.T. Tan, Dawn T.H. Photonics Devices and System Group SUTD-MIT International Design Center Singapore University of Technology and Design Singapore487372 Singapore NanoFab Facility Electrical and Computer Engineering Department University of California Santa Barbara Santa BarbaraCA93106 United States Institute of Microelectronics A*STAR 2 Fusionopolis Way #08-02 Innovis Tower Singapore138634 Singapore

We explore nonlinear effects in a topological photonic valley Hall insulator with a Kagome system at telecommunications wavelengths, we achieve topologically protected -12dB parametric conversion with sub-milliwatt in... 详细信息

ISBN: (纸本)9781957171395

关键词： Photonics

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Topologically Protected Wavelength Conversion in a Photonic Valley Hall Insulator

Topologically Protected Wavelength Conversion in a Photonic ...

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CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

关键词： Landforms

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Frequency Comb-based High-Speed Data Transmission with Integrated Tunable Dispersion Compensation

Frequency Comb-based High-Speed Data Transmission with Integ...

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IEEE International Conference on Group IV Photonics

作者： K. Y. K. Ong A. Aadhi X. X. Chia G. F. R. Chen P. Xing D. T. H. Tan Photonics Devices and System Group Singapore University of Technology and Design Singapore Singapore Institute of Microelectronics A*STAR 2 Fusionopolis Way Singapore Singapore

Frequency comb-based high-speed data transmission is limited in data rate and reach due to dispersion impairments. We demonstrate an integrated SiN platform for frequency comb generation and tunable dispersion compens... 详细信息

ISBN: (数字)9798350394047

ISBN: (纸本)9798350394054

关键词： Silicon compounds Frequency modulation Silicon photonics Data communication Optical fiber dispersion

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3D printed polarization selective metamaterial

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Materials Today: Proceedings 2022年 70卷 270-274页

作者： Gao, Hongwei Tan, Dawn Photonics Devices and System Group Singapore University of Technology and Design 8 Somapah Rd. Singapore 487372 Singapore Engineering Product Development Singapore University of Technology and Design 8 Somapah Rd. Singapore 487372 Singapore Institute of Microelectronics A*STAR 2 Fusionopolis Way #08-02 Innovis Tower Singapore 138634 Singapore

An original design of a double-vertical split ring resonator with different height formation is proposed. It can be fabricated by 3D direct laser writing and subsequent metal deposition. Different transmission component varying with height difference, as well as with gap between double-vertical split ring resonator based on the designed structure are numerically demonstrated as proofs of concept. © 2022

关键词： Polarization

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Dispersion Compensation of 30GBaud/s NRZ and PAM4 data using integrated Silicon Nitride Gratings

Dispersion Compensation of 30GBaud/s NRZ and PAM4 data using...

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2022 Optical Fiber Communications Conference and Exhibition, OFC 2022

作者： Chen, George Fengrong Ong, Kenny Yong Keng Chia, Xavier Xujie Cao, Yanmei Tan, Dawn T. H. Photonics Devices and System Group Singapore University of Technology and Design Singapore487372 Singapore Institute of Microelectronics A-STAR 2 Fusionopolis Way #08-02 Innovis Tower Singapore138634 Singapore

Dispersion compensation is demonstrated using on-chip Silicon Nitride Bragg Gratings. Impaired 30GBaud/s NRZ and PAM4 eye diagrams are restored and a power penalty improvement of 1.3dB at a Bit Error Rate of 10-12 is ... 详细信息

ISBN: (纸本)9781557524669

关键词： Optical fiber communication

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Real-Time Status Update system in a Parallel Blocking Queue

IEEE Open Journal of the Communications Society

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IEEE Open Journal of the Communications Society 2025年 6卷 4608-4623页

作者： Zhengchuan Chen Junyao Zhu Nikolaos Pappas Lyutianyang Zhang Min Wang Chaowei Tang Tony Q. S. Quek School of Microelectronics and Communication Engineering Chongqing University Chongqing China The Department of Computer and Information Science Linköping University Linköping Sweden School of Optoelectronics Engineering Chongqing University of Posts and Telecommunications Chongqing China Information System Technology and Design Pillar Singapore University of Technology and Design Tampines Singapore

Multi-path transmission is promising in improving the freshness of information received in status-updating systems. However, multi-path transmission results in out-of-order arrivals at the monitoring point, which poses significant challenges to the analysis of freshness. This work analyzes the age of information (AoI) of a multi-path transmission non-preemptive system where multiple servers can deliver the information generated from a source to a common monitor. Two systems are considered: the homogeneous M/M/n/n non-preemptive system, where the arrival rates and service rates are identical across servers, and the heterogeneous M/M/2/2 non-preemptive system, where the service rates of all servers are different. We employ the stochastic hybrid systems (SHS) approach to characterize the average AoI of the systems and derive an explicit expression for the average AoI in both homogeneous and heterogeneous cases. Numerical results verify the effectiveness of the analysis. It is shown that when the number of servers increases in powers of 2, the most significant reduction in the average AoI occurs when the number of servers changes from 1 to 2. Besides, the numerical results confirm that the M/M/2/2 non-preemptive system is superior to the M/M/1/1 dual-queue system in terms of average AoI.

关键词： Servers Monitoring Queueing analysis Real-time systems Information age Receivers Out of order Measurement Transportation Mathematical models

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Development of the Occupancy Detection system

Development of the Occupancy Detection System

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International Conference on Mixed design of Integrated Circuits and systems (MIXDES)

作者： Michał Zbieć Dariusz Obrębski Dariusz Solnica Research Group of Integrated Circuits and System Design Łukasiewicz - Institute of Microelectronics and Photonics Warsaw Poland Lars Lighting Sp. z o. o Warsaw Poland

ISBN: (数字)9788363578268

ISBN: (纸本)9798350375701

This paper describes development and testing of occupancy detection system with zone temperature measurement and fire detection features. It also provides BMS connectivity via additional communication module. Described work was carried out within Milewianse project, as a part of the 4th Poland-Berlin cooperation in the field of photonics.

关键词： Temperature measurement Integrated circuits Industries Automation Accuracy Europe Feature extraction

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