目前研磨非對稱型光纖端面之製造方式，以四角錐型與錐式楔型光纖透鏡為例，其成型需要三到四個步驟，過程耗時且成品之重複性及良率不高。針對上述改進，本研究研發出一套機構，使光纖相對於研磨盤之正壓力做週期性之變化，藉此改變材料移除之速率，以一次研磨之程序，使原本為平端之光纖端面成為橢圓錐型；此後，再經電弧放電後使光纖之尖端部分形成光纖透鏡。此機構簡化了原本繁瑣之製作流程以減少加工時間與成本，提高經濟效益；並因其一次成型之特點，可大幅減少透鏡中心與光纖中心之偏心程度，提高生產之良率。
本研究將以文獻回顧開始敘述，包含了論文以及專利中提及的製作方法，之後再提出目前使用之方法以茲比較。內容包含成型之原理，以及其所需加裝之機構等；原理部份將提出如何改變正壓力，以改變材料移除之速率，機構方面將說明機構之設計流程。最後，將在結果與討論部份展示機構、研究成果，以及待改進之部分，以提供未來之研究方向。

Take the Quadrangular-Pyramid-Shaped Fiber Endface(QPSFE) and the Conical-Wedge-Shaped Fiber Endface(CWSFE) for example, the present procedure of grinding asymmetric optical fiber endface demands three to four steps. These steps take time and are lack of repeatability and high yield. Aim at the shortcomings, this study develops a set of mechanism to attach to the original optical fiber grinding machine. The mechanism makes the normal pressure between the endface and the grinding plate change periodically to modify the removing rate of the material, thus enables the clipped flat endface of the optical fiber be ground into an elliptic-cone-shaped in a single grinding step, and then becomes a lens after its tip being fused by the arc. This mechanism reduces the fabricating time and cost, and consequently improve the economic benefits as well by simplifying the complicated manufacturing processes that represented before. Besides, for its single-step grinding characteristic, the offset between the center of the fiber and the elliptic-cone can thus be slashed to promote the yield.
This study reviews the anterior references, including the papers and the patents, to begin, and then proposes the current means to compare with. Its contents involve the development of the forming principle, which proposes how the variation of the normal pressure takes influence on the removing rate of the material, and the required mechanism for the design procedure. The mechanism, the research result, and those needed to be ameliorated will be demonstrated in the conclusion and discussion part, so as to offer the investigating direction in the future.

謝誌......................................i
目錄......................................ii
圖目錄....................................iv
表目錄....................................vi
摘要......................................vii
Abstract..................................viii
第一章 緒論..............................1
1.1 研究背景與研究動機...................1
1.1.1 研究背景 - 光纖通訊之發展與簡介....1
1.1.2 研究動機 - 提高耦光效率............3
1.2 文獻回顧.............................4
1.3 研究目標與論文大綱...................10
第二章 雷射與光纖間之耦光機制............12
2.1 高斯光束.............................12
2.2 模態匹配.............................13
2.3 光纖透鏡之運用.......................16
第三章 非對稱型光纖端面成型之原理........17
3.1 光纖研磨機台簡介.....................17
3.2 材料移除率之參數.....................19
3.3 扭矩變動與光纖端面之關係.............21
3.3.1 固定扭矩大於週期性變動扭矩振幅.....27
3.3.2 固定扭矩等於週期性變動扭矩振幅.....29
3.3.3 固定扭矩小於週期性變動扭矩振幅.....30
3.4 變動扭矩之方式.......................32
第四章 非對稱光纖端面研磨機構之設計......35
4.1 機構設計之需求.......................35
4.2 研磨機構之設計.......................35
4.3 減速機構之設計.......................37
4.3.1 動力需求計算.......................37
4.3.2 馬達之選用.........................38
第五章 實驗結果與討論、建議..............45
5.1 實驗結果.............................45
5.2 實驗結果討論.........................49
5.3 後續改良設計.........................54
參考文獻..................................56
附錄......................................59

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