Advances in acoustooptic digital computations via analog convolution in spectrum domain

Abstract

The presentation considers properties of the acoustooptic (AO) digital matrix multipliers based on the algorithm of digital multiplication via an analog convolution (DMAC) in the spectrum domain. The calculations, of main working regimes of the planar Bragg cell on base of Ti-diffused waveguides on YX-LiNbO3 with so called collinear waves interaction have been performed. The possibility of very high bit rate capabilities in AO digital matrix-vector multiplications up to 1.5×1010 mult.-adds/sec with 16-bit accuracy, is theoretically predicted . There are firstly discovered facility of the spectral DMAC for operation in the floating point regime as well as advantages of the AO digital multiplier implementation for a some prospective telecommunication systems. The most significant features of the proposed AO multipliers have been verified experimentally.