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检索条件"任意字段=Conference on Design and Engineering of Optical Systems II"

共 20635 条记录，以下是251-260 订阅

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design and Optimization of MDM Fibers Using a Tunable Difference of Gaussian (DoG) Profile for Robust Cylindrical Vector Mode Transmission

Design and Optimization of MDM Fibers Using a Tunable Differ...

引用

2024 International conference on Telecommunications and Intelligent systems, ICTIS 2024

作者： Rjeb, Alaaeddine Fathallah, Habib Machhout, Mohsen Seleem, Hussein University of Monastir Electronics and Microelectronics Lab Monastir Tunisia University of Carthage Artificial Intelligence and Data Engineering Applications Lab Bizerte Tunisia Pharos University in Alexandria Tanta University Electronics and Communications Faculty of Engineering Egypt

ISBN: (纸本)9798331527396

Mode-division multiplexing (MDM) using fiber cylindrical vector (CV) modes holds significant potential for enhancing optical communication capacity. However, designing fibers that effectively guide and separate CV modes with optimized performances remains challenging. This work presents a novel MDM fiber based on the Difference of Gaussian (DoG) function. It incorporates four tunable shape parameters to guide robust CV modes. The design trade-offs and performance metrics of the proposed DoG fiber are numerically investigated. The results demonstrate that the fiber supports CV modes with high modal separation (neff > 10-4), indicating minimal channel crosstalk across the C+L ITU-T bands. Furthermore, the guided CV channels exhibit low differential group delays (DGD) and chromatic dispersion (CD), making the DoG fiber an excellent candidate for optical communication systems and/or other applications involving CV mode transmission through fibers. © 2024 IEEE.

关键词： Chromatic dispersion

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Shock-Resistant design for MEMS optical Switch Based on Displacement-Limited Structure 5

Shock-Resistant Design for MEMS Optical Switch Based on Disp...

引用

5th International conference on Sensing, Measurement and Data Analytics in the Era of Artificial Intelligence, ICSMD 2024

作者： Xie, Jin He, Tao Lian, Zheng Zhang, Xiao Xiong, Zhuang Cao, Jun Zhang, Hao Zeng, Chao Zhao, Yizhuang Dai, Jun Institute of Electronic Engineering China Academy of Engineering Physics Mianyang China School of Mechatronical Engineering Beijing Institute of Technology Beijing China School of Infromation and Technology Beijing University of Technology Beijing China

ISBN: (纸本)9798331529192

Microelectromechanical systems (MEMS) optical switch, notable for its compact dimension and ease of integration, has been widely applied in military and aerospace fields. However, when facing the high value impact overloads and shocking environment, the structural failure may occur in the MEMS optical switch, causing the functional damage in the whole system. This paper focuses on the methodology of shock-resistant design for multi-body coupling MEMS optical switch basing on displacement-limited dynamics and novel fabrication process. A back-support structure and glass cap work together to protect the movable microstructure against out-of-plane displacement. A double-sided deep reactive ion etching process was used to fabricate the MEMS optical switch on a silicon-on-insulator substrate. A model was constructed based on displacement-limited dynamics to explain the protection mechanism under high overloads. Experimental results indicated that the MEMS optical switch survived overloads as high as 25,000 g with an impulse of 105 μs, which far surpass the shock resistances of existing designs. This study is expected to promote the application of functional MEMS optical switch in high shocking environments. © 2024 IEEE.

关键词： Reactive ion etching

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design and Evaluation of a Low-profile Haptic Interface Based on Surface Electrical Nerve Stimulation 1

Design and Evaluation of a Low-profile Haptic Interface Base...

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1st IEEE conference on Telepresence, Telepresence 2024

作者： Jakes, Rachel S. Mesias, Luis Santos, Veronica J. Fu, Michael J. Tyler, Dustin J. Cwru Dept. of Biomedical Engineering United States Dept. of Mechanical and Aerospace Engineering United States United States Cwru Dept. of Electrical Computer and Systems Engineering United States The MetroHealth System Dept. of Physical Medicine & Rehabilitation United States Advanced Platform Technology Center Dept. of Va Northeast Ohio Healthcare System United States

ISBN: (纸本)9798331528249

Haptic feedback in telepresence applications is vital for remote task performance and object manipulation. To maximize telepresence capabilities, haptic systems need to be integrated with immersive telepresence interfaces such as virtual reality, which offer benefits such as improved spatial awareness and operator mobility. Compatibility with the mobility of these systems and their built-in optical hand tracking require low-profile wearable interfaces. Further, for full functional benefits, haptic systems must be able to elicit spatially congruent sensation without impeding operator movement and physical object interactions. In this paper, we describe the design of a lightweight, compact, and adaptable surface electrical nerve stimulation-based haptic interface. We demonstrate its capacity to consistently generate spatially congruent sensation on the all five fingertips without occlusion, as well as its compatibility with headset-based optical hand tracking. © 2024 IEEE.

关键词： Haptic interfaces

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Deep Learning-Driven design of Plasmonic optical Coloring Filters 6

Deep Learning-Driven Design of Plasmonic Optical Coloring Fi...

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6th IEEE Novel Intelligent and Leading Emerging Sciences conference, NILES 2024

作者： Elessawy, Pansee S. Sallam, Mai O. El-Batawy, Yasser M. Ali, Nouran M. Nanoelectronics Integrated Systems Center Nile University Giza12588 Egypt Cairo University Faculty of Engineering Engineering Mathematics and Physics Department Giza12613 Egypt

ISBN: (纸本)9798350378511

Plasmonic Coloring Filters can be dynamically tuned by manipulating the geometric parameters of meta-materials, such as unit cell size, shape, and arrangement. In the presented work, the impact of the unit cell dimensions of the plasmonic color tunable filter on the transmitted color is investigated. A deep neural network model is implemented to efficiently predict transmission coefficients across various dimensional configurations and to predict the optimal one, enabling the rapid optimization of design parameters for desired wavelengths. The model's high accuracy significantly reduces both the simulation time and the computational resources. © 2024 IEEE.

关键词： optical filters

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Nonlinear optical Rectification in Multilayered Quantum Disks: Exploring Core Radius, Barrier Width, Relaxation Time, and Aluminum Concentration Effects 4

Nonlinear Optical Rectification in Multilayered Quantum Disk...

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4th International conference on Innovative Research in Applied Science, engineering and Technology, IRASET 2024

作者： Abdelghani, Fakkahi Mohammed, Jaouane Reda, Arraoui Ayoube, Ed-Dahmouny Kamal, Elbakkari Ahmed, Sali Fsdm Sidi Mohamed Ben Abdellah University Solid Physics Laboratory Department Of Physics Fez Morocco Fst Sidi Mohamed Ben Abdellah University Siger Laboratory Department Of Physics Fez Morocco

ISBN: (纸本)9798350309508

In this study, we have solved the Schrodinger equation by using the finite element method and the effective mass approximation. We have investigated the intricate interplay of parameters influencing nonlinear optical rectification in multi-layered quantum disks. By examining the effects of core radius, barrier width, relaxation time, and Aluminum concentration, this research unveils a nuanced understanding of the optical response within these structures. Our findings not only deepen the comprehension of nonlinear optical processes in quantum-confined systems but also offer valuable insights for tailored optoelectronic device design and functionality. © 2024 IEEE.

关键词： Finite element method

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Study on preparation process and emission performance of AlxGa1-xAs/GaAs photocathodes with Distributed Bragg Reflector 6

Study on preparation process and emission performance of Alx...

引用

6th conference on Frontiers in optical Imaging and Technology: Novel Imaging systems

作者： Feng, Cheng Cheng, Shuai Liu, Jian Zhang, Yijun Qian, Yunsheng School of Information and Communication Engineering Nanjing Institute of Technology Jiangsu Nanjing211167 China North Night Vision Technology Co. Ltd. Kunming650114 China Fundamental Education and Experimental Center Nanjing University of Science and Technology Jiangsu Nanjing210094 China School of Electronic and Optical Engineering Nanjing University of Science and Technology Jiangsu Nanjing210094 China

ISBN: (数字)9781510679719

ISBN: (纸本)9781510679702

In order to study the photoelectric emission performance of distributed Bragg reflector structure on GaAs photocathodes, a reflective GaAs photocathode with a buffer layer of distributed Bragg reflector structure was designed and grown. The samples were subjected to optical property testing, chemical cleaning, high-temperature purification, and Cs/O activation. Finally, the photoelectric emission efficiency of GaAs photocathodes with distributed Bragg reflector structure was measured. By comparing with traditional reflection-mode GaAs photocathodes, it was found that the introduction of DBR structure makes the optical performance and quantum efficiency of GaAs photocathodes completely different from traditional structures. Through the reasonable design of DBR structure, the absorption efficiency of specific wavelength incident light in the photocathode body can be improved. In addition, the preparation process including cleaning and activation was implemented. Combined with improved preparation technology, the emission efficiency of the photocathode can be improved. © 2024 SPIE.

关键词： Photocathodes

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design of active disturbance suppression algorithm for two-axis monitoring of smart city 3

Design of active disturbance suppression algorithm for two-a...

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2023 3rd International conference on Intelligent Traffic systems and Smart City, ITSSC 2023

作者： Zhang, Yigong Zhang, Yuejie School of Information Science and Technology Northwest University Shanxi Xi'an710127 China Luoyang Institute of Electro-Optical Equipment AVIC Luoyang471000 China

ISBN: (纸本)9781510672963

In order to further improve the disturbance suppression ability of smart city two-axis monitoring, this paper proposes a active disturbance suppression(ADS) algorithm for smart city two-axis monitoring. The disturbance torque of two-axis monitoring loop is estimated through the establishment of nominal model, disturbance design and disturbance estimator design. The interference torque of the two-axis monitoring loop is compensated by the compensator and tracker, and the proposed method is compared with the traditional PID and LADRC algorithms by simulation experiments. The simulation results show that the disturbance suppression capability of the proposed linear active disturbance suppression algorithm is improved by 74.996% compared with PID algorithm and 52.557% compared with LADRC algorithm, which can effectively improve the disturbance suppression capability of two-axis monitoring. © 2024 SPIE. All rights reserved.

关键词： Smart city

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From rags to riches: a 19th century stable transformed into a modern Concurrent design Facility 11

From rags to riches: a 19th century stable transformed into ...

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conference on Modeling, systems engineering, and Project Management for Astronomy XI

作者： Cascone, Enrico De Filippis, Liana Eredia, Christian Cianniello, Vincenzo D'Auria, Domenico De Caprio, Vincenzo INAF Osservatorio Astron Capodimonte Salita Moiariello 16 I-80131 Naples Italy Univ Napoli Federico II Dipartimento Ingn Ind DII Via Claudio 21 I-80125 Naples Italy

ISBN: (纸本)9781510675216;9781510675223

As part of the strengthening of the Italian research infrastructure included in the National Resistance and Resilience Plan, a financing proposal was presented for the recovery of an ancient 19th century building located in the park of the Astronomical Observatory of Capodimonte INAF, allocating it to host INAF's first Concurrent design Facility and the first in southern Italy. A Concurrent design Facility (CDF) is the set of infrastructures, devices and processes that allows engineering teams with people from different backgrounds to work together, at the same time, on all the aspects of the design. This coordinated effort helps to achieve complex design definition more easily and quickly, through an engineering management protocol, compared to a "step-by-step" approach, which is the traditional method where each team works individually with only little direct interaction with each other. Concurrent engineering is extremely efficient in terms of time and effort, especially for feasibility studies and preliminary design. This article describes the project presented and the expected functionality of the new CDF, both from a technological and architectural recovery point of view.

关键词： CDF INAF PNRR Concurrent design XR 3D Manufactoring

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design of In-Situ optical Fiber Sensor for Dissolved Oxygen and Chlorophyll-a in Ocean

Design of In-Situ Optical Fiber Sensor for Dissolved Oxygen ...

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2023 IEEE International conference on Electrical, Automation and Computer engineering, ICEACE 2023

作者： Zhang, Jian Zhang, Hongquan Zhou, Shiyi Zhang, Lidong Zhao, Wenguang Zhou, Hang College of Intelligent Systems Science and Engineering Harbin Engineering University Harbin China

ISBN: (纸本)9798350309614

In this study, an optical fiber sensor for detecting dissolved oxygen and algal chlorophyll-a content was described. Ethyl cellulose matrix doped with tris (2, 2'-bipyridine) ruthenium (ii) (Ru(bpy)32+) as a sensing material for dissolved oxygen. The light emitting diode of 450nm was used to excite chlorophyll-a which existed in algae and the sensing materials for dissolved oxygen. We apply fiber optic sensitive probes to measure different concentrations of dissolved oxygen and chlorophyll-a. The attenuation of the fluorescence intensity used to detect the dissolved oxygen concentration has a linear relationship with the increase of the dissolved oxygen concentration within the test range. In the range of testing, the relative fluorescence intensity for the probe of chlorophyll-a also linearly changes with the chlorophyll-a concentrations' increasing. The sensor can be used to monitor dissolved oxygen and chlorophyll-a in seawater. © 2023 IEEE.

关键词： Chlorophyll-a Dissolved Oxygen Plastic optical fiber

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High signal-to-noise ratio distributed fiber optic sensor based on Nonlinear frequency modulated signal 4

High signal-to-noise ratio distributed fiber optic sensor ba...

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4th International Computational Imaging conference, CITA 2024

作者： Zhang, Jing Xu, Tuanwei Xie, Yaning Cao, Kai Deng, Dimin Li, Fang State Key Laboratories of Transducer Technology Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China School of Electronic Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing100049 China

ISBN: (纸本)9781510688834

This article presents the design of an optical pulse signal utilizing nonlinear frequency modulation. The designed signal achieves pulse compression with an acceptable signal-to-noise ratio (SNR) and controlled main lobe broadening, significantly suppressing sidelobes and attaining a sideband suppression ratio exceeding -57.15 dB. This methodology is applicable to distributed fiber optic sensing systems, theoretically enabling such systems to maintain high SNR and extensive dynamic range, thereby fulfilling the requirements for high spatial resolution and ultra-long-distance fiber sensing. © 2025 SPIE.

关键词： Frequency modulation

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