Image Compression using All-optical DCT and DST
198 viewsDOI:
https://doi.org/10.54939/1859-1043.j.mst.82.2022.159-166Keywords:
All-optical discrete cosine transform (DCT); Image processing; Multimode interference coupler; Optical signal processing; Signal processing.Abstract
In this paper, we present a method for realizing all-optical Discrete Sine and Cosine Transform (DST/DCT) for image compression. We show that all-optical DST and DCT can be achieved by using only one 4x4 MMI (multimode interference) coupler at a suitable width and length. The proposed method can process image data at high speed and high bandwidth. We use numerical methods for simulating the whole devices
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