Acousto-optic Bragg diffraction in a LiNbO3 channel-planar composite waveguide with application to optical computing

Tsai, C. S.; Zang, D. Y.; Le, P.
September 1985
Applied Physics Letters;9/15/1985, Vol. 47 Issue 6, p549
Academic Journal
Successful experimentation on acousto-optic Bragg diffraction in a LiNbO3 composite waveguide that consists of an array of parallel but uncoupled channel waveguides directly extended to a single-mode planar waveguide and a titanium-indiffused proton-exchanged (TIPE) microlens array is reported for the first time. A channel-waveguide array, a planar waveguide, a linear TIPE microlens array, a 500-MHz surface acoustic wave transducer, and an integrating lens have all been integrated in a substrate size of 0.2×1.0×2.0 cm to form an integrated acousto-optic Bragg modulator that should find a variety of applications in optical computing, signal processing, and communications. The resulting modulator module has been utilized to perform matrix-vector multiplication.


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