本篇論文主要研究非鎖住動態特性，並利用此動態特性解決光載微波通訊系統中會產生的能量消逝效應以及微波能量過小的問題。在此篇研究指出非鎖住動態具有自我振盪頻率，並且可以藉由調整注入條件得到不同的振盪頻率，範圍從10GHz到100GHz。除此之外，非鎖住動態更具有高邊帶強度比以及高調制深度的特性。利用這兩種特性，在不減少原本光雙調制邊帶能量的條件下，達到光雙單調制邊帶轉換，進而解決能量消逝效應以及微波能量過小的問題。本篇論文深入了解其各個物理量隨著調制前後以及注入條件改變的變化。而利用非鎖住動態進行光雙單調制邊帶轉換，此系統具有很強的可調性，可藉由改變注入條件調整其振盪頻率、調制深度以及邊帶強度比。此系統也可以適應因為儀器系統本身的不穩定性，稱之為自適應性。除此之外，因為本篇論文所使用的機制是藉由將單一邊帶放大而非抑制，因此其微波強度會因此而放大。

For radio-over-fiber links, direct modulation and external modulation are commonly adopted to generate photonic microwaves. These low-efficiency modulation approaches typically generate optical double-sideband modulation signals with low optical modulation depth. On one hand, the optical double-sideband modulation signals lead to significant microwave power fading over fiber distribution because of a chromatic dispersion in optical fibers. To mitigate such unwanted effect, optical single-sideband modulation signals are preferred. On the other hand, the low optical modulation depth may limit microwave power after photodetection, and accordingly decreases detection sensitivity and transmission distance. This thesis investigates unlocking dynamics of semiconductor lasers. Because of a self-sustained microwave oscillation of the unlocking dynamics, semiconductor lasers operated at the unlocking dynamics generate optical single-sideband modulation signals with high optical modulation depth, up to 100%. In addition, the microwave oscillation frequency can be tuned from 10 GHz to 100 GHz. In this thesis, we apply the characteristics of unlocking dynamics to process the optical double-sideband modulation signals. As will be shown in the following sections, optical double-sideband modulation to optical single-sideband modulation conversion and photonic microwave amplification through optical modulation depth enhancement are simultaneously achieved.

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