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Optimization and Comparative Analysis of Rectangular and Slot Waveguide based Symmetric Ring and Racetrack Resonators for SoI Photonic Integrated Filters

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SILICON 2024年第7期16卷 2913-2926页

作者： Vardhan, Shalini Singh, Ritu Raj Netaji Subhas Univ Technol Dept Elect & Commun Engn Delhi 110078 India

Over the past decades Silicon on Insulator (SoI) technology has tantalized the interest of researchers in the design of numerous nonlinear Photonic Integrated Circuits (PIC's) to provide a variety of devices. In this manuscript, four different types of optical add/drop resonators are proposed and compared using their simulated microcomb notch filter performance. The four types of resonators are (i) rectangular waveguide based conventional ring resonator, (ii) slot waveguide based ring resonator, (iii) rectangular waveguide based racetrack resonator, and (iv) slot waveguide based racetrack resonator, for variety of active/passive applications. The resonator parameters: Free Spectral Range (FSR), Full Width at Half Maximum (FWHM), Finesse (F) and Quality factor (Q-factor) are evaluated and compared for four resonators. The resonators are optimized for different parameters, such as ring radius (R), gap (g) between the waveguides and coupling length (L-c). The optimized R of similar to 30 mu m with the power coupled 'g' of 55 nm is found after performing rigorous simulations for the entire optical conventional band (C-band) i.e., in 1530 nm - 1565 nm using Finite Element Method (FEM). The manuscript provides valuable insights into the design considerations and performance trade-offs of different optical resonators in PICs showing symmetricity along x-axis and y-axis. These findings can guide the development of efficient and high-performance integrated photonic devices for various applications, including communication and computing systems.

关键词： Silicon photonics Silicon-on-insulator technology Photonic integrated circuits Ring resonators Racetrack resonators optical notch filter Rectangular waveguide Slot waveguide

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Defining Relationships Between Model Elements in Model-Based systems engineering (MBSE): The DREME Framework 4th

Defining Relationships Between Model Elements in Model-Based...

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4th International conference of the Italian Association of design Methods and Tools for Industrial engineering

作者： Pasquariello, Agnese Rega, Andrea Vitolo, Ferdinando Patalano, Stanislao Univ Naples Federico II Fraunhofer J Lab IDEAS Ple V Tecchio 80 I-80125 Naples Italy

ISBN: (纸本)9783031765933;9783031765940

Model-Based systems engineering (MBSE) methodologies for system design are widely discussed in the literature and commonly adopted in industrial contexts. However, there is a lack of methods to support the construction of a consistent set of models representative of the System of Interest (SoI). The establishment of dependencies among model elements (i) within each model, (ii) at each level of system decomposition, and (iii) through different levels of system decomposition is a critical enabling activity. The present paper proposes the DREME (Definition of RElationships among Model Elements) framework to define relationships among model elements within a MBSE methodology. The DREME framework has been defined by using the knowledge-based approach (KBA). Finally an example of its application is demonstrated with the Requirement-Functional-Logical-Physical method for mechatronic system design.

关键词： MBSE Knowledge-Based Approach RFLP relationships model consistency

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Using off-the-shelf components in the design of curved compound eye camera systems 25

Using off-the-shelf components in the design of curved compo...

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conference on Current Developments in Lens design and optical engineering XXV

作者： Allain, Guillaume Rabia, Sedick Thibault, Simon Univ Laval Fac Sci & Genie Dept Phys 2325 Rue Univ Quebec City PQ Canada Ctr Opt Photon & Laser 2375 Rue Terrasse Quebec City PQ Canada

ISBN: (纸本)9781510679221;9781510679238

The fabrication of curved compound eye camera systems is usually complex since it can involve multiple nonstandard components to achieve the desired effect. In this paper we aim to provide a close alternative to these custom optical elements using off the shelf components or to provide a framework to design these systems using standard fabrication techniques. We will first demonstrate how lens distortion can be leveraged to optically bend a standard planar microlens array, and how this bending correlates to a curved microlens array. We will then show lab results of curved compound eye camera made using an off-the-shelf fisheye lens and a standard microlens array and how the equivalent curved microlens array system reproduces image in the real world and provide a comparison using image simulation from an optical design software and a scene recorded using a neural radiance field.

关键词： Optics Lens design Compound eye Lens distortion Biomimetics NERF

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Load Matching design and Multi-objective Optimization of Helicopter EHA 20th

Load Matching Design and Multi-objective Optimization of Hel...

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20th Chinese Intelligent systems conference

作者： Wang, Chao Sun, Mingwei Fu, Jian Beihang Univ Sch Mech Engn & Automat Beijing 100191 Peoples R China

ISBN: (纸本)9789819786565;9789819786541;9789819786534

In recent years, more-electric technology has been gradually introduced into the aviation field, which shows higher maintainability than the traditional hydraulic system. In this paper, a load matching method is proposed for the preliminary design of helicopter EHA. Firstly, reasonably match the power curve and the load curve to ensure the output capacity is sufficient;secondly, determine the optimization design process by establishing the reasonable estimation models;and finally calculate all the parameters based on the optimal solution combination, which is generated by the multi-objective optimization algorithm.

关键词： Electro-hydrostatic actuator Load matching Parameter design NSGA-ii algorithm

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optical Software-Assisted design and Optimization of Bessel Beam systems for applications to laser materials processing 9

Optical Software-Assisted Design and Optimization of Bessel ...

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conference on optical design and engineering IX

作者： Froehly, L. Hassan, M. Belloni, V Meyer, R. Furfaro, L. Giust, R. Courvoisier, F. Univ Franche Comte CNRS UMR 6174 Inst FEMTO ST F-25000 Besancon France

ISBN: (纸本)9781510673571;9781510673564

Bessel beams, known for maintaining focus over long distances, find many applications in imaging, nonlinear optics and laser material processing. For these applications, generating sub-micrometer Bessel beams is essential, but requires complex optical systems. Traditional optical software, designed for ray tracing, are challenged for this task. Here we show how we can use optical software to create and optimize optical design to generate these unconventional beams. The research involves high numerical aperture systems, investigates the influence of polarization, and the use of diffractive optical elements. Numerical findings are compared to experimental results, highlighting the potential of software-assisted beam design for various applications.

关键词： Bessel beams Laser ablation optical system ZEMAX OpticStudio@ANSYS

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design and Modeling of Graphene Based Electroabsorption Modulator Integrated with Hybrid Plasmonic Waveguides 32

Design and Modeling of Graphene Based Electroabsorption Modu...

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32nd International conference on Electrical engineering (ICEE)

作者： Soofi, Hadi Bagheri, Shima Karkon Vahed, Hamid Univ Tabriz Fac Elect & Comp Engn Tabriz Iran

ISBN: (纸本)9798350376357;9798350376340

Electro-optic modulators play a substantial role in modulating high-speed optical signals in photonic integrated systems. Graphene is a very promising material for various optoelectronic applications, allowing the realization of active optical devices. Plasmonic waveguides are the most promising candidates for subwavelength optical confinement. We propose a graphene-based electro-absorption modulator integrated with hybrid plasmonic waveguides. The proposed configuration integrates the benefits of both graphene and plasmonic waveguides. The results demonstrate that the modulation depth of the proposed modulator can reach 1.0917 dB/mu m at low gating voltages with a wavelength of 1.55 mu m. When compared with previous papers, our proposed modulator shows superior performance.

关键词： Electro-optic modulators graphene hybrid plasmonic waveguides modulation depth Plasmonic waveguides

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Comparative analysis of optical system configurations for enhanced retinal imaging in smartphone-based fundus cameras

Comparative analysis of optical system configurations for en...

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2024 International conference on Interdisciplinary Physics, ICIPs 2024

作者： Rosyadah, Aprina Nasution, Aulia M.T. Surabaya Indonesia

This paper presents a comparative study on the optical system design for a smartphone-based fundus camera to enhance retinal imaging quality. Three optical system configurations were evaluated using ANSYS Zemax OpticStudio 2024 R1 software: design I (20D aspheric lens), design ii (40D aspheric lens), and design iiI (60D aspheric lens). The optical systems were evaluated by analysing: (i) the illumination path from the light source to the retina, and (ii) the imaging path from the retina to the smartphone camera's sensor. The results were evaluated using image metric quantities, including the spot diagram, transverse ray fan plot, and TTF MTF vs Field, to represent the image quality of each optical system. Additionally, the illumination and imaging paths were analysed to assess the overall image quality. The findings indicated that design iiI, with the 60D aspheric lens, demonstrated superior image quality in terms of spot diagram, ray fan plot, and MTF performance, making it the most effective design. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Ophthalmology

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Automating system-level stray light analysis with Ansys Optics 9

Automating system-level stray light analysis with Ansys Opti...

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conference on optical design and engineering IX

作者： Lauinger, Tobias Thoene, Stefan Dannenberg, Tino Nazari, Mina Morales, Angel Blobel, Gernot Gely, Sandra Grove, Mike Lesage, Etienne Sklavenitis, Stavros Bastide, Fabien Ansys 2600 Ansys Dr Canonsburg PA 15317 USA

ISBN: (纸本)9781510673571;9781510673564

Stray light analysis is essential for the design of high-quality optical systems, to ensure that unwanted light reaching the sensor is minimized, and artifacts that degrade optical performance - such as lens flare - are mitigated. This article introduces a system-level approach for stray light analysis using Ansys Optics simulation tools, considering stray light from both optical and non-optical components. The article illustrates how these tools can be integrated with Ansys optiSLang for automated exploration and design optimization. The practical camera use-case highlights a seamless data exchange between Ansys Optics simulation tools. It employs a range of intuitive features, from Ansys Zemax OpticStudio's sequential ray tracing, extending to Ansys Speos ray path analysis, while leveraging HPC and Cloud Computing. The combined capabilities offer an efficient solution, streamlining collaboration and enabling optimized optical system designs.

关键词： Stray light analysis Automation High-quality optical systems Ansys Zemax OpticStudio Ansys Speos Ansys OptiSLang GPU HPC and Cloud Computing Lens flare

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optical design of Multi-field Integral Field Unit Spectrograph for the ORCAS Keck Instrument Development ii (ORKID ii) Instrument 10

Optical Design of Multi-field Integral Field Unit Spectrogra...

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conference on Ground-Based and Airborne Instrumentation for Astronomy X

作者： Pasquale, Bert A. Peretz, Eliad Gao, Guangjun Kurczynski, Peter Chambers, Victor Seals, Lenward Millar-Blanchaer, Max Wizinowich, Peter Kassis, Marc Plavchan, Peter Adams, Molly NASA Goddard Space Flight Ctr Greenbelt MD 20771 USA Univ Calif Santa Barbara Santa Barbara CA 93106 USA WM Keck Observ Waimea HI USA George Mason Univ Fairfax VA 22030 USA Northwestern Univ Evanston IL 60208 USA

ISBN: (纸本)9781510675155;9781510675162

We have designed an Integral Field Unit for the ORCAS1 Keck Instrument Development ii (ORKID ii) Instrument. Building on the success of the ORKID camera which achieved 15.2 masec PSF FWHM visible light imaging, ORKID ii will add Integral Field Spectroscopy to analyze Active Galactic Nuclei (AGN), supernovae redshift and brightness, and other observations. Several design options have been explored based on image slicers manufactured by the Canon Corporation's machining process. Field layouts can include up to three disparate spatial sampling, with a lower limit of 6.7 masec. Spectral resolutions are considered from R 100 to R 10,000.

关键词： Space Instrumentation Astronomical Optics Imaging systems Telescopes Dark Energy Spectroscopy systems engineering Integrated Modeling UPDATE

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Performing STOP analysis on high power lasers: understanding complex systems through a physics-based co-simulation workflow 9

Performing STOP analysis on high power lasers: understanding...

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conference on optical design and engineering IX

作者： Cailler, Maxime Gutierrez, Luis Felipe Mercado Normanshire, Chris Ansys Inc 2600 Ansys Dr Canonsburg PA 15317 USA

ISBN: (纸本)9781510673571;9781510673564

This paper provides an accurate and simple simulation workflow for Structural, Thermal and optical Performance (STOP) analysis on complex optical systems. Applying this workflow to a high-power laser system, we use Ansys Zemax OpticStudio for both optical design and wavefront analysis. Then Ansys Speos is used for optical heat load calculation on each component of the system. Finally, Ansys Mechanical is used to perform thermal and structural analysis, providing this information back to OpticStudio for wavefront error analysis and optical tolerancing. The workflow is fully automated thanks to Ansys System Coupling interface. Besides the ease of use, this workflow captures the impact of structural deformations and refractive index changes on the key performances of any optical system, accounting for opto-mechanical component contributions. The approach can be steady-state or transient.

关键词： Simulation optical design LASER Multiphysics structural thermal STOP

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