半導體雷射於可調微波光電濾波器與相位偏移器之研究

Abstract

近幾年慢光效應引起相關研究熱潮，使其在未來全光訊號處理系統中的應用更加廣泛。本論文主旨在研究半導體垂直面射型雷射造成的慢光效應，我們使用射頻單邊帶光訊號，發現其可造成邊帶相位之改變。我們也利用雙邊帶光訊號，結合半導體垂直面射型雷射，進而達成可調式濾波器之效果。我們實際驗證此模組的可行性。而這些研究已進行詳盡的分析與實驗，未來將有助於全光訊號處理系統、相位陣列天線系統以及移動標地偵測雷達系統之發展。

In this dissertation, we study slow light in Vertical-Cavity Surface-Emitting Laser. We have experimentally demonstrated the electrical controlled phase shifter based on vertical-cavity surface-emitting laser in a optical single sideband system. The large tunable range with almost 360° phase-shift is achieved by adjusting the bias current of VCSEL. The tunable microwave phase shifter based on VCSEL and SSB modulation has the potential to reduce the size, cost and effectively to overcome the RF fading for microwave systems. Moreover, we also presents a novel tunable microwave filter using slow light in a vertical cavity surface emitting laser. These investigations will be useful in the fields of moving target identification radar systems.