在蝶形雷射模組的構裝中，光纖及雷射的對準與固定是相當重要的工作，目前多藉由雷射銲接的方式來進行固定的工作，然而因為雷射銲接時使得材料溶融又瞬間凝固，這樣的過程會使得材料產生形變，使得之前對準的光纖位置產生偏移，這個偏移量稱為銲後位移，銲後位移會影響耦光的效率，而使銲後位移最小化是光發送器構裝中重要的工作之一。
我們可以依據銲後位移的變化來進行修正使得銲後位移最小化，但是蝶形雷射模組因為空間狹小造成銲後位移檢測的困難，所以本文透過CCD影像檢測的方式來量測蝶形光發送器的銲後位移，並且利用反射鏡取像的方式來解決因空間狹小而造成的檢測困擾，實際檢測蝶形雷射模組的銲後位移結果與模擬的情況相符合，本文的檢測方式可以檢測出蝶形雷射模組銲後位移的情況。

Aligning and fixing the fiber and laser device is an important work in butterfly laser module packaging. Assembling these two component by laser welding is to achieve reliable and stable weld joint. However, during the welding process, rapid solidification of the welded region and the associated material shrinkage causes the fiber position moved. The relative movement between fiber and laser is called post-weld-shift(PWS). A few micrometers PWS makes coupled power lost. Therefore, minimizing the PWS between fiber and laser is a key research topic in butterfly laser module packaging.

We can correct the PWS minimal by fiber shift inspect. But it has a difficult of space limit in butterfly laser module packaging. In this study, a video camera with image acquisition system was used to measure the PWS. We also used a mirror image to solve the problem of space limited. The PWS inspection result has matched our simulation. This method can successfully inspect the PWS in butterfly laser module.

目錄 Ⅰ
圖目錄 Ⅱ
表目錄 Ⅲ
中文摘要 Ⅳ
英文摘要 Ⅴ
第一章 序論 1
第二章 蝶形雷射模組構裝程序 2
第三章 檢測方法 4
3.1 對焦方式 4
3.2 邊緣檢測方式 5
3.3 角度偏差修正方式 6
第四章 實驗結果 8
第五章 討論與結論 10
參考文獻 11
附錄 13
圖目錄
Fig 2.1 構裝程序-置入套筒示意圖
Fig 2.2 構裝程序-放入馬鞍示意圖
Fig 2.3 構裝程序-雷射銲接示意圖
Fig 2.4 蝶形雷射模組構裝完成示意圖
Fig 2.5 構裝程序
Fig 2.6 光纖位置偏移與耦光效率關係圖
Fig 3.1 反射鏡實際放置情況
Fig 3.2 檢測流程
Fig 3.3清晰度函數測試結果
Fig 3.4邊緣檢測影像
Fig 3.5反射鏡放置位置示意圖
Fig 3.6 L向量各方向分量示意圖
Fig 3.7成像說明示意圖
Fig 3.8 Y方向偏移說明示意圖
Fig 3.9 Z方向偏移說明示意圖
Fig 4.1 緊配情況示意圖
Fig 4.2 鬆配情況示意圖
Fig 4.3 模擬X軸與Y軸偏移情況與功率變化關係圖
表目錄
Table 4.1 第一組(緊配)銲後位移檢測結果
Table 4.2 第二組(鬆配)銲後位移檢測結果
Table 4.3 第三組(鬆配)銲後位移檢測結果
Table 4.4 第四組(鬆配)銲後位移檢測結果

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