互注入穩定鎖住動態已被研究出可以改善半導體雷射的調制特性。但在大多數的研究裡，幾乎都假設兩個相互耦合半導體雷射系統的操作條件為相同、對稱的情況，但在實際情況下，兩個雷射間的操作條件是存在一些不對稱的情況。因此在本論文中，我們將以數值模擬的方式針對系統的對稱或不對稱性來分析各種不同的雷射操作條件，如:延遲長度、耦合強度、兩雷射間頻率差及線寬增加因子，對直接調制特性的影響。根據我們的研究也發現，延遲長度很大程度會影響鬆弛共振頻率，令雷射系統的調製響應產生顯著改變。最後，根據不同條件個別討論出來的結果，同時操作在雷射系統上進行分析，討論出互注入雷射直調響應系統最佳化的條件。

Mutual injection locking dynamic has been demonstrated to significantly improve the modulation characteristics of semiconductor lasers. However, most prior studies on mutually delay-coupled semiconductor lasers have assumed that the operating conditions of the two lasers are the same (i.e., symmetric). This assumption is, however, not valid in practical situations where the operating conditions are generally different (i.e., asymmetric).In this study, we numerically investigate the effects of symmetric or asymmetric operating conditions, including delay length, coupling strength, detuning frequency, and linewidth enhancement factor, on direct modulation response of the laser system .We also study the effect of the coupling delay length which, based on our observation, plays a significant role in the enhancement of relaxation resonance frequency that is strongly related to the direct modulation response of the laser system. Based on the discuss of the effects of all operating conditions, the optimized operating condition is studied.

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