Integrated optic matrix-vector multiplier using multi-frequency acousto-optic diffraction

摘要

An integrated-optic numerical processor performing matrix-vector multiplication in analog representation is proposed. Parallel processing of a number of numerical products is performed in the same area of a substrate by means of multiple Bragg diffraction of multiwavelength optical signals due to multifrequency surface acoustic waves (SAWs). The wavelength interval of multiplexed optical signals can be 0.77 nm for an optical beam width of 3 mm and an acoustic frequency of 1 GHz. Preliminary demonstrations of matrix-vector multiplication are presented with a waveguide-type Ti:LiNbO/sub 3/ acoustooptic deflector. An alternative processor using one optical wavelength is also described.