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  1. NTU Theses and Dissertations Repository
  2. 電機資訊學院
  3. 光電工程學研究所
請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/42270
完整後設資料紀錄
DC 欄位值語言
dc.contributor.advisor張宏鈞
dc.contributor.authorSen-ming Hsuen
dc.contributor.author許森明zh_TW
dc.date.accessioned2021-06-15T00:56:39Z-
dc.date.available2012-08-08
dc.date.copyright2008-08-08
dc.date.issued2008
dc.date.submitted2008-08-04
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/42270-
dc.description.abstract為了研究各向異性材料對於建構完整的能帶結構所造成之影響,我們針對在光子晶體中的電磁波模態可以退耦成橫向電場與橫向磁場模態之情況,先發展出一個以有限元素法為基礎所建立的廣義純量式特徵值演算法來分析二維各向異性光子晶體的能帶結構。我們分析了具有正方晶格與三角晶格的二維各向異性光子晶體,並且審查這兩種晶格結構的第一布里淵區中不同子區域間之關係。在分析各向異性光子晶體時,第一布里淵區中足夠多之必要子區域皆須納入考慮,因此用來為各向等性光子晶體建構完整能帶結構之概念須加以適當修正。
然後,在電磁波的傳播方向平行於週期性平面之條件下,一個以有限元素法為基礎的全向量式特徵值演算法更進一步被提出來針對具有三維各向異性材料的二維光子晶體進行能帶結構分析。我們嘗試同時考慮所有電場或磁場分量並推導出一個矩陣特徵值方程式來處理最廣泛之二維光子晶體問題。經由分析各向等性的光子晶體,我們闡述了此全向量式特徵值演算法與廣義純量式特徵值演算法之間的關係,而藉由探討一個各向異性光子晶體之特性,我們說明了此全向量式特徵值演算法的重要性。對於二維各向異性光子晶體更深刻的認識與了解皆可以利用此全向量式特徵值演算法來獲得。
最後,在電磁波的傳播方向不再平行於週期性平面之條件下,我們亦展示了一個以有限元素法為基礎的全向量式特徵值演算法,此演算法可以為具有三維各向異性材料的二維光子晶體建構出能帶邊界圖。使用此全向量式特徵值演算法,各種具有不同材料組成與幾何形狀定義的光子晶體之能帶邊界圖皆可以方便且正確地建構出來。因此,我們可以利用此全向量式特徵值演算法來獲得關於光子能隙光纖之分析與設計相當有用的指導方針。
zh_TW
dc.description.abstractA generalized scalar finite element method (FEM) based eigenvalue algorithm for analyzing the band structures of two-dimensional (2D) anisotropic photonic crystals (PCs) when the wave modes in the PCs can be decoupled into the transverse-electric (TE) and transverse-magnetic (TM) ones is developed first to investigate the intrinsic effect of anisotropic materials on constructing complete band structures. The 2D anisotropic PCs with square and triangular lattices are analyzed, and the relationships among the distinct sub-zones of the first Brillouin zones (BZs) for these two lattices are examined. The concept of constructing complete band structures for isotropic PCs should be modified for anisotropic PCs by taking into accounts enough necessary sub-zones in the first BZ.
Then a full-vectorial FEM based eigenvalue algorithm under the in-plane wave propagation is further proposed for the band structure analysis of 2D PCs with arbitrary 3D anisotropy. We attempt an idea of considering all the electric or magnetic field components simultaneously and formulate a matrix eigenvalue equation to deal with the most general 2D PC problems. The relationship between this full-vectorial algorithm and the generalized scalar one is clarified from the analysis of isotropic PCs, and the significance of this full-vectorial algorithm is demonstrated through the examination of an example anisotropic PC. It is seen that a deeper insight about 2D anisotropic PCs can be obtained utilizing this full-vectorial algorithm.
Finally a full-vectorial FEM based eigenvalue algorithm under the out-of-plane wave propagation for the band edge diagram construction of 2D PCs with arbitrary 3D anisotropy is also presented. Based on this full-vectorial algorithm, the band edge diagrams of various PCs with different material combination and geometry definition can be conveniently and correctly constructed. Consequently, quite valuable guidelines for the analysis and design of photonic band gap (PBG) fibers can be acquired with the help of this full-vectorial algorithm.
en
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en
dc.description.tableofcontents1 Introduction............................................1
1.1 Photonic Crystals and Related Applications............1
1.2 Numerical Schemes for the Analysis of Photonic Crystals and Related Devices..............................5
1.3 Overview and Organization of the Dissertation.........6
1.4 Contributions of the Present Work.....................8
2 Finite Element Method..................................16
2.1 Brief Review of the Finite Element Method............16
2.2 Classical Methods for the Formulation of the Finite Element Method...........................................17
2.2.1 The Ritz method....................................17
2.2.2 Galerkin's method..................................19
2.3 Basic Steps of the Finite Element Method.............20
2.3.1 Selection of Elements and Shape Functions..........21
2.3.2 Discretization of the Computational Domain.........23
2.3.3 Formulation of the Matrix Equation.................24
2.3.4 Solution of the Matrix Equation....................25
3 Finite Element Method Based Eigenvalue Algorithm for the Analysis of Two-Dimensional Photonic Crystals............29
3.1 Generalized Scalar FEM Based Eigenvalue Algorithm under the In-Plane Wave Propagation......................30
3.1.1 Background.........................................30
3.1.2 The Governing Equation.............................30
3.1.3 Finite Element Discretization......................33
3.1.4 Periodic Boundary Conditions for the 2D PCs........35
3.2 Full-Vectorial FEM based Eigenvalue Algorithm under the In-Plane Wave Propagation............................41
3.2.1 Background.........................................41
3.2.2 The Governing Equation.............................42
3.2.3 The FEM Based Matrix Eigenvalue Equation...........43
3.3 Full-Vectorial FEM Based Eigenvalue Algorithm under the Out-of-Plane Wave Propagation........................47
3.3.1 Background.........................................47
3.3.2 The Governing Equation.............................47
3.3.3 The FEM Based Matrix Eigenvalue Equation...........48
4 Intrinsic Effect of Anisotropy on the Band Structure Analysis of Photonic Crystals............................57
4.1 Band Structure Analysis for Isotropic Photonic Crystals.................................................58
4.1.1 Square Lattice.....................................58
4.1.2 Triangular Lattice.................................59
4.2 Band Structure Analysis for Anisotropic Photonic Crystals.................................................60
4.2.1 Square lattice.....................................61
4.2.2 Triangular lattice.................................63
5 Band Structure Analysis of Two-Dimensional Photonic Crystals with Arbitrary Three-Dimensional Anisotropy: In-Plane Wave Propagation...................................85
5.1 Characteristics of the Full-Vectorial FEM Based Eigenvalue Algorithm.....................................86
5.2 Application of the Full-Vectorial FEM Based Eigenvalue Algorithm................................................89
6 Band Structure Analysis of Two-Dimensional Photonic Crystals with Arbitrary Three-Dimensional Anisotropy: Out-of-Plane Wave Propagation...............................113
6.1 Construction of Band Edge Diagrams..................114
6.2 Band Edge Diagrams for Anisotropic PCs..............115
7 Conclusion............................................136
A Full-Vectorial Finite Element Beam Propagation Method.139
B List of Acronyms......................................148
dc.language.isoen
dc.subject波束傳播法zh_TW
dc.subject光子能隙光纖zh_TW
dc.subject液晶zh_TW
dc.subject電磁波理論zh_TW
dc.subject光子晶體zh_TW
dc.subject有限元素法zh_TW
dc.subject各向異性材料zh_TW
dc.subjectBeam propagation methoden
dc.subjectElectromagnetic theoryen
dc.subjectPhotonic crystalsen
dc.subjectAnisotropic materialsen
dc.subjectLiquid crystalsen
dc.subjectPhotonic band gap fibersen
dc.subjectFinite element methoden
dc.title二維各向異性光子晶體之特性研究與有限元素法建模分析zh_TW
dc.titleCharacteristic Investigation and Finite Element Method Modeling for Two-Dimensional Anisotropic Photonic Crystalsen
dc.typeThesis
dc.date.schoolyear96-2
dc.description.degree博士
dc.contributor.oralexamcommittee陳俊雄,許文翰,吳瑞北,江衍偉,賴?杰,趙如蘋,潘犀靈
dc.subject.keyword電磁波理論,光子晶體,各向異性材料,液晶,光子能隙光纖,有限元素法,波束傳播法,zh_TW
dc.subject.keywordElectromagnetic theory,Photonic crystals,Anisotropic materials,Liquid crystals,Photonic band gap fibers,Finite element method,Beam propagation method,en
dc.relation.page156
dc.rights.note有償授權
dc.date.accepted2008-08-04
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
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