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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/41565完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 張宏鈞 | |
| dc.contributor.author | Chun Nien | en |
| dc.contributor.author | 粘群 | zh_TW |
| dc.date.accessioned | 2021-06-15T00:23:14Z | - |
| dc.date.available | 2013-07-01 | |
| dc.date.copyright | 2011-08-20 | |
| dc.date.issued | 2011 | |
| dc.date.submitted | 2011-08-15 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/41565 | - |
| dc.description.abstract | The finite-difference time-domain (FDTD) method is a useful design and numerical analysis tool in the rapidly evolving research of photonics. However, the traditional FDTD code is insufficient when facing the challenges of the difficulty in programming level rising with the increasing demands of complex structures and of the enormous amount of floating-point operations and large computer memory usage when a high- accuracy simulation result is needed. In this thesis, we address each of these issues by developing an object-oriented FDTD simulator enabling a flexible and extensible framework and parallelizing the computation kernel by the OpenMP/MPI hybrid scheme and the CUDA on graphic processing unit to solve the speed and memory problem. Next, we study two categories of the nanophotonics. The first is study of the local field enhancement between two metallic nano-cylinders. The effects of the cell size of the FDTD mesh on the accuracy and convergence of calculated near fields and far-field responses are studied by comparing with those obtained by the pseudospectral frequency-domain (PSFD) method and analytical solutions, respectively. The study of the effect of the dielectric shell on the spectral response of the dielectric-coated silver nano-cylinder pair shows that the resonant frequency is in strong correlation with the dielectric shell. The second part devotes to the waveguide devices. We investigate the transmittance of various bending structures in the plasmonic waveguide. Further, a comparison between FDTD simulations using different cell sizes and the results obtained by the discontinuous Galerkin time- domain (DGTD) method in the transmittance of a dielectric microring resonator add-drop filter shows that even a coarse mesh can be used to obtain a quick but still relatively accurate result. Finally, two plasmonic ring resonators, one with a square ring and the other with a circular ring, have been simulated and compared. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T00:23:14Z (GMT). No. of bitstreams: 1 ntu-100-R98941028-1.pdf: 9602226 bytes, checksum: 34e094414c5ef8252d07068e47d66ddc (MD5) Previous issue date: 2011 | en |
| dc.description.tableofcontents | 1 Introduction 1
1.1 Motivations ................................ 1 1.2 NumericalSchemesforWaveguideAnalysis. . . . . . . . . . . . . . . 2 1.3 DescriptionoftheThesis......................... 3 2 The Finite-Difference Time-Domain Method 5 2.1 Introduction................................ 5 2.2 ModelingofDispersiveMaterials .................... 8 2.2.1 TheLorentzOscillatorModel .................. 8 2.2.2 TheDrudeModel......................... 8 2.2.3 ModelingofMetal ........................ 9 2.2.4 Implementation of Dispersive Material Models . . . . . . . . . 10 2.3 Convolutional Perfectly Matched Layer Absorbing Boundary Condi- tions.................................... 13 3 Designing the FDTD Simulator 21 3.1 Introduction................................ 21 3.2 Object-OrientedDesign.......................... 22 3.3 Acceleration of the FDTD Method Using Parallel Computing . . . . . 24 3.3.1 OpenMP/MPIHybridParallelization . . . . . . . . . . . . . . 24 3.3.2 CUDAParallelization....................... 26 4 Modeling of Field Enhancement in Nano-Cylinders 35 4.1 Overview.................................. 35 i 4.2 Modeling of Near-Field Enhancement in Silver Nano-Cylinder Pair . . 36 4.2.1 CaseoftheCircularSilverCylinderPair . . . . . . . . . . . . 36 4.2.2 CaseoftheSquareSilverCylinderPair . . . . . . . . . . . . . 37 4.2.3 Case of the Dielectric-Coated Circular Silver Cylinder Pair . . 38 4.3 Modeling of Scattering in Core-Shell Nano-Cylinder Pair . . . . . . . 39 4.3.1 Computation of Electromagnetic Scattering . . . . . . . . . . 39 4.3.2 Modeling of the Scattering Cross Section of Single Silver Nano- cylinder .............................. 40 4.3.3 Effects of Dielectric Shell on the Spectral Response of Coated SilverNano-cylinderPair..................... 41 5 Modeling of Plasmonic and Dielectric Waveguides and Ring Res- onators 63 5.1 Overview.................................. 63 5.2 Modeling of Plasmonic Waveguides with 90 ◦ Bending Structures . . . 64 5.3 Modeling of Dielectric Ring Resonator and the Study of the Effects ofMeshFineness ............................. 67 5.4 ModelingofPlasmonicRingResonators ................ 69 6 Conclusion 95 Bibliography 97 | |
| dc.language.iso | en | |
| dc.title | 發展平行運算核心之物件導向有限差分時域架構以分析二維電漿子奈米結構與波導元件 | zh_TW |
| dc.title | Developing an Object-Oriented FDTD Framework with Parallel Kernel for Analyzing Two-Dimensional Plasmonic Nanostructures and Waveguide Devices | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 99-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 陳中平,鄧君豪 | |
| dc.subject.keyword | 有限差分時域法,電漿子波導,奈米電漿子,濾波器,平行計算,CUDA,OpenMP,MPI,物件導向, | zh_TW |
| dc.subject.keyword | FDTD,plasmonic waveguides,nano-plasmonic,channel drop filters,parallel computing,CUDA,OpenMP,MPI,object-oriented, | en |
| dc.relation.page | 103 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2011-08-15 | |
| 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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