Abstract
An integrated-optic matrix-vector multiplier using collinear acoustooptic (AO) interaction is discussed. The processor performance in analog and digital representations is clarified. The collinear AO modules are integrated in parallel at a lateral separation of 200 mu m, with an acoustic crosstalk of less than -25 dB for frequencies >or=150 MHz. Optical crosstalk caused by the mode conversion along optical waveguide branches is also investigated. It is shown that a crosstalk due to SAW (surface acoustic wave) coupling between adjacent SAW waveguides can be suppressed under -25 dB by separating the AO modules to 200 mu m for frequencies higher than 150 MHz. >
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