臺灣博碩士論文加值系統

在本研究中我們由理論分析及實驗量測兩方面針對兩種不同形式的光纖光柵在受到外力及溫度的擾動下對光傳播行為的改變來加以探討，其中包含了採相位光罩法以紫外雷射光配合光纖感光性製作的傳統式短週期光纖光柵和藉由類似半導體製程之蝕刻技術製作的外力式長週期光纖光柵。
本文中對於已有較完備理論的傳統式短週期光纖光柵，主要是以實驗來驗證理論之分析同時探討其作為高靈敏度感測器的能力與限制，另外更嘗試結合積層式壓電致動器作為可調式的光通訊元件以應用於未來分波多工之光通訊系統中。
在外力式長週期光纖光柵方面，由於其屬於一新的光纖光柵形成機制在理論及實驗兩方面都未臻成熟，本文中由製作乃至於實驗量測的結果，對於其特性和設計等方面皆有詳細分析及說明，除此之外文中同時研究以光纖模態耦合理論、光彈理論配合有限元素分析的方式來對其特性進行分析。

By characterizing the variations of optic propagation behavior from the perturbation of applied mechanic forces and the temperature difference through theoretical analyses and experimental results, two different types of fiber gratings, including the traditional fiber Bragg grating that manufactured by using phase mask method and the corrugated long period fiber grating that made by techniques similar to the lithography procedure of semiconductor manufacturing are analyzed in this research.
For the traditional fiber Bragg grating that already has well-developed theories, we discuss the ability and limitation for use this device as high sensitive sensors. Furthermore, we also combine the traditional fiber Bragg grating with multilayer piezoelectric actuator to use as the tunable device for the dense wavelength division multiplexed system.
Applying loads on corrugated long period fiber grating is a new way for forming fiber gratings. In this thesis, we illustrate the characteristics and design parameters by the experimental results. We also develop a method using conventional coupled-mode theory, photo-elastic theory and finite element analysis to explain and analyze experimental results.

誌謝 i
中文摘要 ii
英文摘要 iii
目錄 iv
表目錄 vii
圖目錄 viii
第一章 緒論 1
1-1 研究動機 1
1-2 文獻回顧 3
1-3 內容簡介 6
第二章 光纖及光纖光柵的基本原理 8
2-1 光纖的構造與分類 8
2-1-1 光纖的基本構造 8
2-1-2 光纖的分類 9
2-1-3 本文中使用之光纖 13
2-2 基本光學理論 15
2-2-1 基本光纖光學 16
2-2-2 光纖光柵的原理 20
2-2-3 光纖光柵的分類 22
2-3 光纖光柵的製作 26
2-3-1 傳統式光纖光柵的製作 26
2-3-2 外力式光纖光柵的製作 31
2-4 光彈原理與熱光原理 36
2-4-1 光彈原理 36
2-4-2 熱光原理 40
第三章 傳統式短週期光纖光柵 41
3-1 基本特性 41
3-1-1 運作特性及設計參數 41
3-1-2 等效折射率及場形分佈 43
3-2 共振波長飄移理論 44
3-2-1 共振波長飄移原理 44
3-2-2 受平面應力下之情況 48
3-2-3 受單軸向應力下之情況 49
3-3 實驗架設及相關元件 50
3-3-1 實驗架設 50
3-3-2 積層式壓電致動器 54
3-3-2 雷射都卜勒振動儀 58
3-4 實驗結果、對照與討論 61
3-4-1 基本特性實驗 61
3-4-2 動態量測之實驗 64
3-4-3 結合積層式壓電致動器之特性 68
3-4-4 結合積層式壓電致動器之應用 74
第四章 外力式長週期光纖光柵 79
4-1 基本特性 79
4-1-1 運作特性及設計參數 79
4-1-2 等效折射率及場形分佈 81
4-2 特性分析之理論基礎 82
4-2-1 模態耦合理論 82
4-2-2 外力式長週期光纖光柵下之情況 85
4-2-3 特性分析方式 87
4-3 實驗架設與有限元素分析模型 89
4-3-1 實驗架設 89
4-3-2 有限元素分析模型 91
4-4 實驗結果、對照與討論 95
4-4-1 受拉伸下的情況 96
4-4-2 受扭轉下的情況 102
4-4-3 溫度變化下的情況 109
4-4-4 設計與應用 110
第五章 結論與展望 113
5-1 本文初步成果 113
5-2 未來展望 114
參考文獻 116
附錄 122
I-1 實驗用色散偏移光纖特性 122
I-2 實驗用積層式壓電致動器特性 125

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