本論文透過TSMC 0.35um 2P4M的製程，原始目的為藉由兩個光感測元件，其光響應一個偏紅光，另一個偏藍綠光，透過後端儀表放大器來判斷現在光源的色偏情況。由於此製程底下紅光的反應仍然十分的強烈，目前此系統可以成為不需沉積濾光膜的藍光偵測器，藉此判斷藍光的強弱程度。可以應用在高容量儲存的藍光DVD讀寫上。

This thesis is realized in TSMC 0.35um 2P4M process. The original objective of this thesis concentrates on using two photodetectors. The first photodiode absorbs the longer wavelength, whereas the second photodiode absorbs the shorter wavelength component of the impinging light. These two output signals are logarithmically compressed and magnified to obtain the voltage difference. It can provide a color difference between the reference level signal. Under this process, the sensors have strong photoresponsivity to red light. At present, this system performs as a blue photodetector without additional color filter thin film process. It can detect the blue light and is applicable to high capacity optical storage system such as blue ray DVD.

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