臺灣博碩士論文加值系統

本篇論文研究重點是一階布拉格光纖光柵(Fiber Bragg Gratings, FBGs)在蝕刻後的輻射特性，我們量測一階光纖光柵的傳輸、反射、輻射頻譜，接著將光纖光柵使用氫氟酸(HF)以及BOE(Buffered Oxide Etch)蝕刻液蝕刻至直徑小於65μm，再對蝕刻後的光纖光柵進行傳輸、反射、輻射的頻譜量測，我們發現蝕刻後一階光纖光柵的頻譜與蝕刻前一階光纖光柵的頻譜相較下往長波長位移，也發現蝕刻後的光纖光柵的傳輸與輻射頻譜，發現順向cladding mode coupling的共振區，還有在一些光纖光柵的反射頻譜發現反向cladding mode coupling的共振區。

In this thesis, the radiation characteristics of etched first-order fiber Bragg Gratings (FBGs) are measured and analyzed. First, we measure the transmission, reflection, and radiation spectrum of non-etched first-order fiber Bragg gratings. Then, hydrofluoric acid (HF) and BOE (Buffered Oxide Etch) are used to etch FBGs. The diameters of etched FBGs are less than 65 μm. Finally, the transmission, reflection, and radiation spectrum of etched FBGs are measured in this study. We find that the center coupling wavelengths of etched FBGs are shifted to long wavelengths side. We also discovered that the forward cladding mode couplings occur in the transmission and the radiation spectrum of etched FBGs. Moreover, the backward cladding mode couplings are found in the reflection spectrum.

致謝 i
摘要 ii
ABSTRACT 錯誤! 尚未定義書籤。
圖目錄 vi
表目錄 xii
第一章 緒論 1
1-1 前言 1
1-2 研究目的與動機 2
1-3 研究方法 3
1-4 論文架構概述 5
第二章 實驗架構與量測方法 6
2-1 儀器與元件介紹 6
2-1-1 可調式雷射光源 6
2-1-2 光功率計 6
2-1-3 手持式光功率計 7
2-1-4 移動平台 7
2-1-5 循環器 7
2-1-6 光譜分析儀 8
2-1-7 紅外線攝影機 8
2-1-8 摻鉺光纖放大器 8
2-2 ISUTS量測系統 9
2-3 TLTS量測系統 10
2-4 ASE與OSA量測系統 11
2-5 紅外線攝影機 14
2-6 布拉格光纖光柵傳輸、反射與輻射之量測 16
2-6-1 布拉格光纖光柵與光電元件的損失 16
2-7 ASE-OSA與ISUTS量測系統頻譜圖位移驗證 29
2-8 蝕刻布拉格光纖光柵 32
2-8-1 使用氫氟酸(HF)蝕刻光纖光柵 32
2-8-2 使用BOE(Buffered Oxide Etch)蝕刻光纖光柵 34
第三章 蝕刻光纖光柵之傳輸、反射與輻射特性 38
3-1 編號49-01之一階布拉格光纖光柵 38
3-1-1 蝕刻前之編號49-01光纖光柵 38
3-1-2 蝕刻後之編號49-01光纖光柵(直徑55.4μm) 42
3-1-3 編號49-01光纖光柵之二套量測系統蝕刻前後比較 46
3-2 編號49-02之一階布拉格光纖光柵 51
3-2-1 蝕刻前之編號49-02光纖光柵 51
3-2-2 蝕刻後之編號49-02光纖光柵(直徑39.1μm) 54
3.2.3 編號49-02光纖光柵之三套量測系統蝕刻前後比較 60
3-3 編號49-03之一階布拉格光纖光柵 66
3-3-1 蝕刻前之編號49-03光纖光柵 66
3-3-2 蝕刻後之編號49-03光纖光柵(直徑50.6μm) 69
3-3-3 編號49-03光纖光柵之三套量測系統蝕刻前後比較 75
3-4 編號49-04之一階布拉格光纖光柵 81
3-4-1 蝕刻前之編號49-04光纖光柵 81
3-4-2 蝕刻後之編號49-04光纖光柵(直徑39.1μm) 84
3-4-3 編號49-04光纖光柵之三套量測系統蝕刻前後比較 91
3-5 編號49-07之一階布拉格光纖光柵 97
3-5-1 蝕刻前之編號49-07光纖光柵 97
3-5-2 蝕刻後之編號49-07光纖光柵(直徑54.6μm) 100
3-5-3 編號49-07光纖光柵之三套量測系統蝕刻前後比較 106
3-6 編號49-08之一階布拉格光纖光柵 112
3-6-1 蝕刻前之編號49-08光纖光柵 112
3-6-2 蝕刻後之編號49-08光纖光柵(直徑43.6μm) 115
3-6-3 編號49-08光纖光柵之三套量測系統蝕刻前後比較 122
第四章 分析與討論 128
4-1 蝕刻後共振區偏移 128
4-2 Forward Cladding Mode coupling 131
4-3 Backward Cladding mode coupling 134
4-4 Double Backwaed Cladding mode coupling 137
4-5 Non-Coupled Radiation of Cladding mode coupling 139
第五章 結論 143
參考文獻 145

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