光儲存媒體以如CD-R與CD-RW由於具有寫入與重複寫入的功能，已成為資料儲存及多媒體產業之一項重要產品。在資料抹寫的過程中由於得同時兼顧光碟機之性能、光碟片的物理特性與抹寫的速度等因素，因此須仰賴良好光功率的控制。論文針對光碟片之寫入建立適合的寫入通道（write channel）模式，並以此模式分析設計動態最佳功率控制（ROPC，Running Optimal Power Control）之法則。在一般實現動態最佳功率控制的方式是對寫入反射訊號做取樣再與預先決定的參考值（由最佳功率調整程序中得到）比較，得到誤差訊號，經由比例控制迴路得到雷射功率的補償。但對高速寫入的光碟機，使用比例控制所得到的雷射功率補償會有較大的變動，而使寫入的品質下降。因此，在本論文應用最小均方演算法、遞迴式最小平方演算法與參考模式的適應性控制法則，來設計光功率控制電路，來達到穩定雷射功率補償目的，期使光碟機在寫入時有良好的寫入品質。

Recordable and rewritable optical discs such as CD-R and CD-RW are popular data storage products on the market. The power control of recording laser in optical disks is the key in maintaining fine writing quality. In the thesis, a simple write channel model for optical disks is obtained through analytical and experimental work. Accordingly, this model is used for designing running optimal power controller. Traditional running optimal power controller is a proportional-type controller - adjusting the laser power in proportional to the sampled reflected signal. The thesis applies least mean square, recursive least square, and model reference adaptive control methods to design the optimal controller. The analysis and design are expected to enhance the writing quality of optical disk drivers.

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