Title:
OPTICAL ARITHMETIC UNIT
Document Type and Number:
Japanese Patent JPH03177825
Kind Code:
A
Abstract:
PURPOSE:To enable fast information processing by providing a slab-shaped waveguide structure wherein the projection light of a light emitting element is enlarged in only one direction and made incident on an optical modulator. CONSTITUTION:A light receiving element array 4 is formed by arranging one laterally long column of rectangular light receiving elements and one light receiving element photodetects light from one row of the optical modulator which has modulating elements arranged in matrix. Each light emitting element emits light according to an input vector signal and the projection light is enlarged in the column direction in a slab waveguide 2 and made incident on the optical modulator 3. At such a time, the light emitted by one light emitting element is made incident on all optical modulating elements in one column and the light modulated by the optical modulator is received all in the row direction by one rectangular light receiving element of the light receiving element array 4. Consequently, positioning is facilitated, the number of connections is easily increased, and the fast information processing becomes possible.
Inventors:
YAMANAKA YUTAKA
Application Number:
JP31799189A
Publication Date:
August 01, 1991
Filing Date:
December 06, 1989
Export Citation:
Assignee:
NEC CORP
International Classes:
G02F3/00; G06E1/00; (IPC1-7): G02F3/00; G06E1/00
Attorney, Agent or Firm:
Uchihara Shin
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