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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53031完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 蘇國棟(Guo-Dung J. Su) | |
| dc.contributor.author | Tsung-Jung Chuang | en |
| dc.contributor.author | 莊宗融 | zh_TW |
| dc.date.accessioned | 2021-06-15T16:40:14Z | - |
| dc.date.available | 2020-08-24 | |
| dc.date.copyright | 2020-08-24 | |
| dc.date.issued | 2020 | |
| dc.date.submitted | 2020-08-10 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53031 | - |
| dc.description.abstract | 近年來，由次波長結構所組成的超穎表面開始蓬勃發展。超穎表面是藉由界面上的相位梯度來改變光行進的方向，在所有的超穎表面中，超穎透鏡用於聚焦並應用於成像光學。與傳統的透鏡相比，超穎透鏡的優勢是平坦，精小且擁有非常薄的厚度。在本文中，我們提出了一種模擬方法結合光束追踪模擬(Ray tracing)，有限時域差分法(FDTD)，S參數方法和近遠場轉換，建立了一套設計超穎透鏡系統的標準操作流程。我們的模擬方法可以達到快速優化整個超穎透鏡系統，並使用有限時域差分法來建立並模擬由奈米結構所組成的超穎透鏡表面。我們的超穎透鏡系統縮小了整個系統的厚度並解決了傳統望遠鏡頭所遇到的體積大的問題。最後，我們驗證了我們的模擬方法成功地結合了兩種用於不同結構尺度的模擬工具，並且都能得到相同且一致的結果。此外，藉由這套模擬的操作流程，我們未來可以設計由超穎表面組成的各種光學系統。 | zh_TW |
| dc.description.abstract | In recent years, the metasurfaces composed of subwavelength structures start to flourish. It changes direction of light propagation by phase-gradient on the interface. Among all of the metasurfaces, the metalenses are used to focus, and are applied to image optics. The advantages of metalenses are flat, compact and largely reduce thickness compared to traditional bulk lens. In this thesis, we proposed a simulation methodology combining ray tracing simulation, FDTD simulation, S-parameter method, and near-to-far-field transformation, establishing a standard operation process to design metalenses system. Our simulation methodology achieved fast optimization of entire metalenses system and used FDTD simulation to construct the metasurfaces composed of nanostructures. Our metalenses system largely reduces the thickness and solves the bulk problem that traditional telephoto lens suffered from. Finally, we verify our simulation methodology that successfully combines two types of simulation tools, which are used on different structure scale, and they have identical results. Furthermore, with this simulation methodology, we can design variety of optical systems composed of metasurfaces in the future. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T16:40:14Z (GMT). No. of bitstreams: 1 U0001-0508202015275200.pdf: 6469843 bytes, checksum: 428d764d6d1d8512f5957d86bf16536d (MD5) Previous issue date: 2020 | en |
| dc.description.tableofcontents | 口試委員會審定書 # 誌謝 i 中文摘要 ii ABSTRACT iii CONTENTS iv LIST OF FIGURES vi LIST OF TABLES xiii Chapter 1 Introduction 1 1.1 Traditional Lens and Telephoto Lens System 1 1.1.1 Principle of Traditional Refractive Lens 1 1.1.2 Telephoto Lens System 3 1.2 Metamaterials, Metasurfaces and Metalenses 6 1.2.1 Metamaterials and Metasurfaces 6 1.2.2 Metalenses 9 1.3 Miniature Planar Metalens System 13 1.4 Motivation 23 Chapter 2 Principle of Metasurfaces 24 2.1 Generalized 3D Snell’s Law 24 2.2 Ideal Phase Profile of Metalenses 29 2.2.1 On-Axis Focusing Metalenses 29 2.2.2 Off-Axis Focusing Metalenses 34 Chapter 3 Simulation Methodology 36 3.1 Simulation Method and Workflow 36 3.2 Geometric Optics Propagation and Optimization of Target Phase 39 3.3 Wave Optics Propagation 41 3.3.1 Architecture by FDTD Simulation 41 3.3.2 Construct Nanostructures of Metasurfaces 43 3.3.3 Finite-Difference Time-Domain (FDTD) 45 3.3.4 S-parameter 50 3.3.5 Near-to-far-field Transform 53 Chapter 4 Results and Discussion 55 4.1 Compare System Architecture for Traditional Lens and Metalenses 55 4.2 Compare Metalenses System with Patents 60 4.3 Analysis of Target Phase and Image of Microscale Metalenses Systems from Geometric Optics 62 4.4 Analysis of Two-Dimensional Phase Profile and Focusing Spot from Wave Optics 68 4.4.1 Phase Profile of Metasurfaces 68 4.4.2 Spot Diagram and Airy Pattern of Image Plane 76 Chapter 5 Conclusion 83 REFERENCE 85 | |
| dc.language.iso | en | |
| dc.subject | 超穎透鏡 | zh_TW |
| dc.subject | 有限時域差分模擬 | zh_TW |
| dc.subject | 光束追蹤模擬 | zh_TW |
| dc.subject | 相位梯度 | zh_TW |
| dc.subject | 次波長結構 | zh_TW |
| dc.subject | 超穎表面 | zh_TW |
| dc.subject | 望遠透鏡 | zh_TW |
| dc.subject | FDTD simulation | en |
| dc.subject | subwavelength structures | en |
| dc.subject | phase-gradient | en |
| dc.subject | metalenses | en |
| dc.subject | telephoto lens | en |
| dc.subject | ray tracing simulation | en |
| dc.subject | metasurfaces | en |
| dc.title | 應用奈米結構設計薄型化長焦距鏡頭 | zh_TW |
| dc.title | Design of thin telephoto lens by using nanostructures | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 108-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 黃定洧(Ding-Wei Huang),蔡永傑(Wing-Kit Choi) | |
| dc.subject.keyword | 超穎表面,次波長結構,相位梯度,超穎透鏡,望遠透鏡,光束追蹤模擬,有限時域差分模擬, | zh_TW |
| dc.subject.keyword | metasurfaces,subwavelength structures,phase-gradient,metalenses,telephoto lens,ray tracing simulation,FDTD simulation, | en |
| dc.relation.page | 90 | |
| dc.identifier.doi | 10.6342/NTU202002474 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2020-08-11 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
| 顯示於系所單位： | 光電工程學研究所 | |
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| U0001-0508202015275200.pdf 未授權公開取用 | 6.32 MB | Adobe PDF |
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