All-Optical Complex-Valued Convolution Based on Time-Delay Interference Structure
Wentao Gu, Xiaoyan Gao, Wenchan Dong, Xinliang Zhang · 2023
We propose an all-optical complex-valued convolution scheme based on time-delay interference structure. The multifunctional complex-valued convolution is implemented by exploiting the periodic wavelength response of the optical time-delay interference structure. We further experimentally demonstrate multifunctional image processing at 50 GHz pixel loading speed, which proves the practical value of the scheme for parallel computation acceleration. The scheme extends the wavelength-parallel functionality of all-optical complex-valued computation and is well suited for high speed, highly parallel complex-valued computation acceleration with very low energy consumption.