運用反射式光纖光柵共振器來穩定主動式諧波鎖模摻鉺光纖雷射之研究

Abstract

在本論文中我們運用光纖光柵所構成之反射式Fabry-Perot瀘波器來穩定主動諧波鎖模摻鉺光纖雷射，我們可以得到穩定之脈衝序列輸入，此脈衝之寬度為91 ps、重複頻率為800 MHz、平均輸出率約 3mW，旁模抑制比(side-mode suppression ration)可達40 dB以上，平均輸出功率之混亂度在0.5%以內。在理論方面，我們使用Kulzenga-Siegman的主動鎖模理論來模擬我們的實驗，計算的結果與實驗相當符合。

In the study of this thesis, we use a reflective Fabry-Perot filter composed by two fiber gratings to stabilize an active harmonic modeloked E-doped fiber laser. Stable outpur pulses are obtained with a 91 ps pulse duration, 800 MHz repetition rate, 3 mW output average power, 40 dB side-mode suppression ratio, and less than 0.5% average power fluctuations. The experimental results agree reasonably well with the theoretical predictions from the Kuizenga-Siegman's theory of actively modelocked lasers.