本篇論文中，我們將實驗兩種架構，並使用縱模間距1.1nm左右的Fabry-Perot Laser Diode(之後我們簡稱為FP-LD)。在兩種架構當中，皆利用改變輸入FP-LD的電壓作為切換單一雷射波長的方法，我們在兩種架構中放入設計過的光纖布拉格光柵(fiber Bragg grating,FBG)。第一種架構是將FBG置於光纖環狀迴路外，先切換好雷射波長，再打入光纖迴路當中;第二種架構是將FBG置於光纖環狀迴路內，在迴路內切換輸出雷射波長。在本研究中，我們探討上述兩種不同的實驗架構所切換的輸出波長的特性，並分析兩種實驗架構的優缺點。

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