Waveguide-Type Collinear Acousto-Optic Devices with Applications to Frequency Shifter and Matrix Multiplier

Nobuo GOTO  Yasumitsu MIYAZAKI  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.1   pp.116-122
Publication Date: 1990/01/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on International Conference on Integrated Optics and Optical Fiber Communication)
Category: Optical Waveguides and Their Devices

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Wavelength-selective optical integrated switch modules using collinear acousto-optic interaction are investigated for applications to an optical frequency shifter and numerical processors. First, an optical frequency shift of 30 MHz was demonstrated with a slab-waveguide device. Next, an experiment of wavelength-selective switching was made at wavelength 632.8, 755 and 785 nm by surface acoustic waves of 19.8, 72.2 and 81.9 MHz, respectively. Matrix-vector multiplication in analog representations was demonstrated using optical multiple-wavelength pulses at 755 and 785 nm. Theoretical limitations of the numerical processing speed are discussed.