臺灣博碩士論文加值系統

本論文係以數值模擬的方式探討半導體雷射遭外部光注入後之啾頻效應特性；對於模擬計算，雷射系統的特性與動態是以單模方程式來表現；本論文探討雷射系統中不同的操作和本質參數對於啾頻效應的影響，以探究適用於實際光纖通訊應用的操作條件。
經由光鎖注入的方式，啾頻效應在穩定的光鎖注入條件下可以明顯的減少；在整個穩定的光鎖注入範圍中，啾頻效應減少的現象於不同光注入強度和兩顆雷射之間的光頻率差(detuning frequency: DF值)下都能觀察到，由此證明光鎖注入技術是減少啾頻效應非常有效的方法；在大範圍的調變必v下，啾頻效應亦能有效地減少；因為不同雷射系統擁有不同的鬆弛震盪頻率，啾頻效應減少隨著調變頻率變化的情形會有明顯的不同；本研究也證明啾頻效應減少在廣泛的操作和本質參數範圍中都能達到，指示光鎖注入技術的適用性；。
本研究中，啾頻效應減少有兩種主要的機制；經由研究證實增強系統的鬆弛震盪頻率是造成光鎖注入雷射在高調變頻率下啾頻效應減少的主要機制；另一方面，改善輸出光必v-注入電流 (L-I) 的輸出特性是造成光鎖注入雷射可有降低啾頻效應的另一個影響機制。

目錄
第一章. 前言 1
1.1 簡介 1
1.2 動機 4
1.3 論文流程 4
第二章. 雷射系統 6
2.1 光注入系統 6
2.2 理論模型 7
2.3 模擬模型 8
第三章. Frequency Chirping 效應 10
3.1 Frequency Chirping效應簡介 10
3.2 外部操作參數 11
3.2.1 調變頻率 11
3.2.2 調變係數 18
3.2.3 操作偏壓 25
3.2.4 光注入參數 31
3.2.5 外部參數之動態灰階圖 36
3.3 內部操作參數 37
3.3.1 Linewidth Enhancement Factor 37
3.3.2 Differential Carrier Decay Rate 42
3.3.3 Nonlinear Carrier Decay Rate 46
3.3.4 Spontaneous Carrier Decay Rate 49
3.3.5內部參數之動態灰階圖 52
第四章.總結 56
參考文獻 58
圖表 64

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