The process that light wave gets through arrayed waveguides can be regarded as a process of extracting spatial sample and filtering spatial frequency . spacial sample is accomplished by period interval arrangement of awg and spatial frequency filtering is accomplished by the fundamental mode and phase delay of each arrayed waveguide which is just a spatial frequency filter 而光場通過陣列波導的過程,可八碩士學住論文waiaster ’ stiesis以看作是空間抽樣以及空間濾波的過程:空間抽樣由陣列波導的周期間隔排列完成,空間濾波由每個陣列波導的基模形式以及位相延遲完成(陣列波導即為一空間濾波器) 。